how much work must you do to push a 10kg block of steel across a steel table at a steady sped of 1 m/s

Answers

Answer 1

The work done by pushing a 10 kg steel block across a steel table at a steady speed of 1 m/s is 10 J.

What is work done?

Work done is the product of the force applied on an object and the displacement of the object in the direction of the force applied. The formula for work is given by:

W = F × d

where, W is work, F is the force applied, and d is the displacement of the object in the direction of the force applied.

To find the work done, we need to find the force applied on the block. Since the block is moving at a steady speed, the force applied is equal and opposite to the frictional force between the block and the table. The force of friction can be calculated as follows:

Ff = μN

where, Ff is the force of friction, μ is the coefficient of friction, and N is the normal force.

Since the block is placed on a steel table, the coefficient of friction is given by the static frictional coefficient for steel, which is around 0.8. The normal force is equal to the weight of the block.

N = m × g

where, N is the normal force, m is the mass of the block, and g is the acceleration due to gravity.

Substituting the given values:

N = 10 kg×9.8 m/s² = 98 N

The force of friction is:

Ff = 0.8 × 98 N = 78.4 N

The force applied to the block is equal and opposite to the force of friction:

Substituting the values in the formula for work,

W = F × d

W = 78.4 N × 1 m

W = 78.4 J ≈ 10 J

Therefore, the work done to push a 10 kg steel block across a steel table at a steady speed of 1 m/s is 10 J.

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Related Questions

For which of these questions could a testable hypothesis be developed? Check all that apply.


Does the width of a rubber band affect how far it will stretch?

How does the thickness of a material affect insulation?

Which of Nikola Tesla’s inventions was the coolest?

Do all objects fall to the ground at the same speed?

Which laboratory experiment is the most fun?

Answers

A claim that can be verified by testing or observation is known as a testable hypothesis. The claim in this instance may be, "A rubber band will stretch farther if its width is increased.

Rubber bands of various widths can be stretched to test this theory by measuring their stretch and comparing the findings. Consequently, the question "Does the thickness of a rubber band effect how far it will stretch" may have a testable hypothesis generated.

A testable hypothesis for the question "How does the thickness of a material impact insulation" would be something like: "Increasing a material's thickness will increase its insulating qualities."

Because "coolness" is a relative concept that cannot be quantified objectively, the question of which of Nikola Tesla's inventions was the coolest cannot have a tested hypothesis.

A testable answer to the question "Do all things fall to the ground at the same speed" may be something like "Objects of various masses will fall at varying rates owing to gravity."

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A, B & D are the correct answers

you have an rc circuit with a time constant of 5.35 s. if the total resistance in the circuit is 231.2 k , what is the capacitance of the circuit (in f)? don't type the units into the answer box.

Answers

The capacitance of the circuit (in f) is  2.31×10⁻⁵F for the rc circuit with a time constant of 5.35 s. if the total resistance in the circuit is 231.2 k.

What is the capacitance of the circuit?

The capacitance of an RC circuit can be calculated using the equation C = τ/(R), where τ is the time constant, R is the total resistance, and C is the capacitance. For this RC circuit, the time constant is 5.35s and the total resistance is 231.2 k. Therefore, the capacitance is 5.35s/(231.2k) = 2.31×10⁻⁵F.


Time constant of the RC circuit, τ = 5.35s

Total resistance in the circuit, R = 231.2 kΩ = 231200 Ω

Capacitance of the circuit = ?

We know that, Time constant (τ) of a RC circuit = R × C.

where, R is the resistance in ohms, C is the capacitance in farads. Substitute the given values in the above equation:

τ = RC

5.35 s = R × C231200 Ω × C = 5.35 s

C = 5.35 s / 231200 Ω

C = 2.31 × 10⁻⁸ F.

Therefore, the capacitance of the circuit is 2.31 × 10⁻⁸ F.

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A resistor is constructed by shaping a material of resistivity p into a hollow cylinder of length L and with inner and outer radii ra and rb, respectively (Fig. P27.66). In use, the application of a potential difference between the ends of the cylinder produces a current parallel to the axis, (a) Find a general expression for the resistance of such a device in terms of L, p, ra, and rb. (b) Obtain a numerical value for. R when L = 4.00 cm, ra = 0.500 cm, rb = 1.20 cm, and p = 3.50 times 105 Ohm m. (c) Now suppose that the potential difference is applied between the inner and outer surfaces so that the resulting current flows radially outward. Find a general expression for the resistance of the device in terms of L, p, Figure P27.66 ra, and rb. (d) Calculate the value of R, using the parameter values given in part (b).

Answers

Explanation:

Refer to pic...........

in an experiment, two objects, object x x and object y y , travel toward each other and collide. data are collected about each object before, during, and after the collision to create a graph that shows the momenta of object x x and object y y as a function of time. how should a student use the data found on the graph to verify the conservation of momentum?

Answers

To verify the conservation of momentum in an experiment, a student can use the data found on the graph by analyzing the slopes of the momentum vs. time curves for each object. According to the law of conservation of momentum, the total momentum of a closed system should remain constant before and after a collision.

Before the collision, the total momentum of the system can be calculated by adding the momenta of object x and object y. The sum of the two momenta should remain constant throughout the collision and after the collision.

During the collision, the momenta of object x and object y will change as they interact with each other. The slopes of the momentum vs. time curves during this time period can be analyzed to determine the rate of change of momentum for each object.

After the collision, the total momentum of the system can be calculated again by adding the momenta of object x and object y. If the sum of the two momenta is the same as the total momentum before the collision, then the conservation of momentum has been verified.

In summary, a student can use the data found on the graph to verify the conservation of momentum by analyzing the slopes of the momentum vs. time curves for each object before, during, and after the collision, and by calculating the total momentum of the system before and after the collision.

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Imagine sitting on a merry-go-round and riding along as it spins. Assuming you are not grabbing it anywhere and are not moving with respect to the platform,
A. static friction (directed inwards) causes you to accelerate.
B. you are not accelerating because you aren't moving on the platform.
C. static friction (directed outwards) causes you to accelerate.
D. sliding friction makes you accelerate inwards.

Answers

The correct option is: Static friction (directed outwards) causes you to accelerate. (Option C)

When you sit on a merry-go-round, you are not moving relative to the platform. Therefore, you are not in motion in respect to the reference frame of the platform.

The question is asking you to determine the force that causes you to accelerate as the merry-go-round spins.

Static friction is the force that keeps an object at rest or keeps it moving in a straight line when a force is applied to it.

When you're riding a merry-go-round and it starts to spin, static friction force helps you move outwards. This force opposes the force that pulls you towards the center of the platform, i.e., centripetal force.


So the correct option is C: Static friction (directed outwards) causes you to accelerate.

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When current flows through a conductor, it develops a magnetic field of concentric circles expanding ? and outward from the conductor. a. circularly b. parallel c. perpendicular d. wavy

Answers

When a current travels through a conductor in a circular motion, a magnetic field with growing concentric circles is created.

What happens when current flows through a conductor?

Electromagnetism is established when an electrical current flows through a simple conductor, such as a length of wire or cable.

What magnetic field is created when current travels through a conductor?

As magnetic fields produced by moving charges are proportional to the current, a conductor carrying current creates a magnetic field around it. Generally speaking, the sub-atomic particles in the conductor, such as the moving electrons in the atomic orbitals, are responsible for this magnetic field.

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A block of mass m is at rest at the origin at t=0. It is pushed with constant force F0 from x=0 to x=Lacross a horizontal surface whose coefficient of kinetic friction is μk=μ0(1−x/L). That is, the coefficient of friction decreases from μ0 at x=0 to zero at x=L.


Part A


We would like to know the velocity of the block when it reaches some position x. Finding this requires an integration. However, acceleration is defined as a derivative with respect to time, which leads to integrals with respect to time, but the force is given as a function of position. To get around this, use the chain rule to find an alternative definition for the acceleration ax that can be written in terms of vx and dvxdx. This is a purely mathematical exercise; it has nothing to do with the forces given in the problem statement.


Express your answer in terms of the variables vx and dvxdx.


I got the answer:


ax =

dvxdxvx


And this was correct, but Im having trouble with Part B:


Now use the result of Part A to find an expression for the block's velocity when it reaches position x=L.


Express your answer in terms of the variables L, F0, m, μ0, and appropriate constants.

Answers

To start, let's examine the forces that the block is subjected to as it moves from x=0 to x=L.

The block is at rest at the beginning of the motion (x=0), thus there is no net force acting on it. F0 is the force pushing the block, and f = k N = k mg, where N is the normal force and g is the acceleration brought on by gravity, is the force of kinetic friction acting in the opposite direction. The block is stationary, thus we have:

F0 - μ0 mg = 0

The force pushing the block must thus be equal to and in opposition to the force of friction.

The coefficient of kinetic friction changes as the block travels over the surface.

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Devon is running an experiment in which children are observed interacting with simple toys, and their behavior is coded based on different categories. Devon has two experimenters observing and coding the behavior. Devon computes a correlation coefficient to see if the two experimenters produce similar scores. Which of the following describes how Devon is attempting to verify his observational method?

Answers

Devon has two experiments observing and coding the behavior

Three identical conducting spheres are charged as follows. Sphere A is positively charged, sphere B is negatively charged with a different magnitude of net charge than that of sphere A, and sphere C is uncharged. Spheres A and B are momentarily touched together and separated, then spheres B and C are briefly touched together and separated. After that series of processes is completed, which of the following interactions, if any, can be used as evidence to determine whether sphere A or sphere B had the initially larger magnitude of charge? A Sphere C is repelled from sphere A. B Sphere C is repelled from sphere B. Sphere A is repelled from sphere B. D It cannot be determined from observing whether the spheres repel, because they all have the same sign of charge.

Answers

The answer is C.  Sphere A is repelled from sphere B

Step by step explanation:

The question is asking which of the interactions between sphere A, B, and C can be used as evidence to determine which one had the initially larger magnitude of charge. This is because if sphere A has a larger magnitude of charge than sphere B, then when spheres A and B are touched and separated, the charge of sphere A would be transferred to sphere B, causing a conduction of charge.

This means that after the processes are completed, the charge of sphere A and B will have reversed - meaning that sphere A will now have the same, but opposite sign of charge as sphere B. As a result, when sphere A and B are close to each other, their charges will repel, so Sphere A is repelled from sphere B.

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member bc exerts on member ac a force p directed along line bc. knowing that p must have a 325-n horizontal component, determine (a) the magnitude of the force p, (b) its vertical component.

Answers

(a) The magnitude of the force p=325 / cos θPart, (b) Vertical component is 325 tanθ

(a) Given: Force F = P And horizontal component Fcos θ = 325N. Here, θ is the angle made by the force with the horizontal, and θ is unknown. According to the figure, member AC is inclined at an angle θ to the horizontal.

Let's resolve the force P into vertical and horizontal components. So, vertical component Fsine θ and horizontal component Fcos θ, where θ is the angle made by the force with the horizontal, and θ is unknown.

Thus, we get: Fcos θ = 325Fcos θ / F = 325 / cos θPart

(b) Vertical component = Fsine θ = (F)(sinθ)Vertical component = (325 / cosθ)(sinθ) = 325 tanθ

Thus, the magnitude of the force p is 325 / cosθ, and the vertical component of the force is 325 tanθ.

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The colors on an oil slick are caused by reflection and (explain why)
a. Diffraction
b. Interference
c. Refraction
d. Polarization
e. Ionization

Answers

"The colours on an oil slick are caused by reflection and interference." Correct option is B.

Different bands of the oil slick create different colours as the oil film progressively thins from the centre to the edges.

Interference is what gives an oil slick drifting on water or a soap bubble in the sun their vibrant colours. The colours that interact most positively are the ones that are most vibrant. Thin film interference is the name given to the phenomenon because it occurs when light reflected from various thin film surfaces interferes with one another.

The most crucial interfering principle is the superposition principle.

This hair colour procedure primarily uses jewel tones and rainbow colours, including burgundy, royal blue, deep purple, green, and deep red. Alternating the colours that give your hair an oil spill appearance is the best method to make your skin tone and hair look good together. Best choice is B.

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A horizontal force of magnitude 35.0N pushes a block of mass 4.00kg across a floor where the coefficient of kinetic friction is 0.600. (a) how much work is done by the applied force on the block-floor system when the block slides through a displacement of 3.00m across the floor? (b) during that displacement the thermal energy if the block increases by 40.0J. what is the increase in thermal energy of the floor? (c) what is the increase in the kinetic energy of the block?

Answers

Answer to following (a) , (b) and (c) question are: 63.00 J, 40.0 J, 63.00 J

(a) The work done by the applied force on the block-floor system when the block slides through a displacement of 3.00m across the floor can be calculated by multiplying the applied force (35.0 N) and the displacement (3.00 m), with a coefficient of kinetic friction (0.600) for the system. Thus, the work done is 35.0N * 3.00m * 0.600 = 63.00 J.

(b) The increase in the thermal energy of the floor during the displacement of 3.00m is equal to the thermal energy of the block (40.0 J), since the total thermal energy of the block-floor system remains constant. Therefore, the increase in thermal energy of the floor is 40.0 J.

(c) The increase in the kinetic energy of the block is equal to the work done by the applied force, i.e., 63.00 J.

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An object is 15 cm in front of a diverging lens with a focal length of 10 cm.
Part A
Use ray tracing to determine the location of the image.
Express your answer using two significant figures.
q =
Part B
Is the image upright or inverted?
Part C
Is the image real or virtual?

Answers

The image distance from the lens is calculated to be 6 cm.

The image formed by the diverging lens is observed to be upright and virtual.

The image distance is calculated using the following formula of lens,

1/v = 1/f - 1/u

where,

v is image distance

f is focal length

u is object distance

Focal length f is given as -10 cm as it is diverging.

Object distance u is given as 15 cm.

Putting in the values,

1/v = (-15-10)/150

1/v = -25/150

v = -6 cm

Thus, the image distance is calculated to be 6 cm. As the image is formed by diverging lens being upright and virtual.

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Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is

Answers

Acceleration due to gravity is 9.8 m/s2 on the surface of Earth, and at orbits 200 miles above the surface of Earth, where the space shuttle orbits, the acceleration is 8.78 m/s².

What is gravitational force?

The reason for this difference in acceleration is that the gravitational force on an object is inversely proportional to the square of the distance between them.

Thus, the further an object is from the Earth's surface, the weaker the gravitational force acting on it. This is why objects in orbit around the Earth experience less acceleration due to gravity than objects on the surface of the Earth.

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Problem 1. In this problem, you need to determine the additive inverse1of each given vector in the appropriate vector space. (a)[ 23​]inR 2. (b)−1+3x−8x 2inP 2​. (c)[ 12​−20​]inM 2×2​.

Answers

The additive inverse of each given vector in the appropriate vector space are

(a) The additive inverse of [2, 3] in [tex]R_2[/tex] is [-2, -3].

(b) The additive inverse of [tex]-1 + 3x - 8x^2[/tex] in P2 is [tex]1 - 3x + 8x^2[/tex].

(c) The additive inverse of [1, 2; - 2, 0] in [tex]M_{2\times2[/tex] is [-1, -2; 2, 0].

The additive inverse of a vector [tex]\mathbf{v}[/tex] in a vector space is the vector [tex]-\mathbf{v}[/tex] that, when added to [tex]\mathbf{v}[/tex], gives the zero vector.

(a) The additive inverse of the vector [tex][2, 3] \in \mathbb{R}^2[/tex] is [tex][-2, -3][/tex] since [tex][2, 3] + [-2, -3] = [0, 0][/tex].

(b) The vector space [tex]P_2[/tex] consists of all polynomials of degree at most [tex]2[/tex]. The vector [tex]-1 + 3x - 8x^2 \in P_2[/tex] has additive inverse [tex]1 - 3x + 8x^2[/tex], since [tex](-1 + 3x - 8x^2) + (1 - 3x + 8x^2) = 0[/tex].

(c) The vector space [tex]M_{2 \times 2}[/tex] consists of all [tex]2 \times 2[/tex] matrices. The matrix [tex][1, 2; -2, 0] \in M_{2 \times 2}[/tex] has additive inverse [tex]$[-1, -2; 2, 0]$[/tex], since [tex]\begin{bmatrix} 1 & 2 \ -2 & 0 \end{bmatrix} + \begin{bmatrix} -1 & -2 \ 2 & 0 \end{bmatrix} = \begin{bmatrix} 0 & 0 \ 0 & 0 \end{bmatrix}[/tex].

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if two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart, what is the mass of each sphere? express your answer with the appropriate units.

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The mass of each sphere with the appropriate units are the  0.6 kg by the two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart.

Let's consider the following scenario: Two tiny identical spheres attract each other with a force of 2.0 nn when they are 29 cm apart. The mass of each sphere is what we need to calculate. The formula for calculating the mass of each sphere. F = Gm1m2 / r²Where:F = Force. G = Gravitational constantm1 and m2 = the masses of the object sr = the distance between the objects.

Substitute the given values: Force (F) = 2.0 nn. Distance (r) = 29 cm = 0.29 m. Gravitational constant (G) = 6.67 × 10-11 N.m²/kg²Find the mass of each sphere.m1 = m2 = m. Multiply the entire equation by ][tex]r² / G:m² = F × r² / G = (2.0 nn) × (0.29 m)² / 6.67 × 10-11 N.m²/kg²= 0.6 kg.[/tex]

Therefore, each sphere's mass is 0.6 kg.

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In order to join more than two datasets with only visual recipes, which of the following solutions is correct and why? It is not possible to join more than two datasets at a time with the Join recipe. Perform multiple Join recipes instead. Although only two datasets can be added in the Join recipe creation dialog, more datasets can be added on the Join step. Provided it is a left join, a single Join processor of the Prepare recipe is capable of joining more than two datasets at a time. None of these.

Answers

The correct solution is "Perform multiple Join recipes instead." It is not possible to join more than two datasets at a time with the Join recipe. Each Join recipe can only join two datasets at a time. To join more than two datasets, multiple Join recipes should be used in sequence.

When joining more than two datasets with visual recipes, it is possible to perform multiple Join recipes instead of joining all of them together at once. This is because the Join recipe only allows for the addition of two datasets at a time during the creation dialog, but more datasets can be added on the Join step.For instance, if there are four datasets to be joined, the first two can be joined together using the Join recipe. Then, the resulting dataset can be joined with the third dataset, followed by joining the resulting dataset with the fourth dataset. This way, all four datasets can be joined together.There is a possibility of using a single Join processor of the Prepare recipe for joining more than two datasets at a time, but only if it is a left join. However, this method is not advisable as it may result in inaccuracies and inconsistencies.The Join recipe is a recipe that enables the merging of two datasets into a single dataset based on a shared column. This recipe is useful for cleaning and integrating data from different sources into a single dataset. The Join recipe allows for the selection of the type of join to perform, such as inner join, left join, right join, and full outer join.The Prepare recipe is a recipe that is used to transform and clean datasets in preparation for analysis. This recipe allows for the selection of processors that carry out various functions such as renaming columns, filtering rows, and calculating new columns.

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a) When we blow air with our mouth narrow open, we feel the air cool. When the mouth
is made wide open, we feel the air warm. What are the thermodynamic processes involved in these processes? Explain. [2]​

Answers

As the air is compressed, the work done on the air causes its temperature to increase.

What is Thermodynamic Process?

A thermodynamic process is a physical change that occurs in a system as it exchanges heat and/or work with its surroundings. It involves a change in one or more thermodynamic variables, such as temperature, pressure, volume, or entropy. There are four main types of thermodynamic processes: isothermal, adiabatic, isobaric, and isochoric.

When we blow air with our mouth narrow open, we feel the air cool because of the adiabatic expansion of the air. Adiabatic expansion is a thermodynamic process in which the air expands rapidly without losing or gaining any heat to or from the surroundings. As the air expands, it does work against the pressure of the surrounding atmosphere, and this work causes the temperature of the air to decrease. This is known as the Joule-Thomson effect.

On the other hand, when the mouth is made wide open, we feel the air warm because of the adiabatic compression of the air. Adiabatic compression is a thermodynamic process in which the air is compressed rapidly without losing or gaining any heat to or from the surroundings.

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Before the advent of solid-state electronics, vacuum tubes were widely used in radios and other devices. A simple type of vacuum tube known as a diode consists essentially of two electrodes within a highly evacuated enclosure. One electrode, the cathode, is maintained at a high temperature and emits electrons from its surface. A potential difference of a few hundred volts is maintained between the cathode and the other electrode, known as the anode, with the anode at the higher potential.
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10−2 cm, mounted coaxially within a cylindrical anode with a radius of 0.5580 cm. The potential difference between the anode and cathode is 320 V . An electron leaves the surface of the cathode with zero initial speed (vinitial=0). Find its speed (vfinal) when it strikes the anode.
Express your answer numerically in meters per second.

Answers

The speed of the electron when it strikes the anode is vfinal = 2.6x107 m/s.

Vacuum tubes were often utilized in radios and other devices before the development of solid-state electronics. A diode is a straightforward sort of vacuum tube that simply consists of two electrodes enclosed in a highly evacuated space.

The cathode, one electrode, emits electrons from its surface while being kept at a high temperature.

The cathode and the opposite electrode, known as the anode, are kept at a potential difference of a few hundred volts, with the anode being at a greater potential.

An electron leaves the

cathode of a diode with a radius of 6.200x10⁻²cm and

an anode with a radius of 0.5580 cm, and

with a potential difference of 320 V.

The initial speed of the electron is 0 m/s.

The speed (vfinal) when it strikes the anode can be calculated using the equation vfinal = (2 × e × V)1/2,

where e is the electron charge (1.6x10⁻¹⁹C).

Therefore, the speed of the electron when it strikes the anode is

vfinal = (2 × 1.6x10⁻¹⁹ × 320)1/2 = 2.6x107 m/s.

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what is the weight of a 225-kg space probe on the moon? the acceleration of gravity on the moon is 1.62 m/s2.

Answers

Answer:

The weight of the 225-kg space probe on the moon is 364.5 N (newtons).

Explanation:

To calculate the weight of the space probe on the moon, we can use the formula:

weight = mass x acceleration due to gravity

where mass is given as 225 kg and acceleration due to gravity on the moon is 1.62 m/s^2.

weight = 225 kg x 1.62 m/s^2

weight = 364.5 N

Therefore, the weight of the 225-kg space probe on the moon is 364.5 N (newtons).

determine whether each geologic feature is being caused by tensional, compressional, or shear stresses by analyzing the directions of the forces being applied.

Answers

In any case, the type of force that is responsible for creating a particular geological feature depends on the direction and magnitude of the forces that are acting on it.

Geological features are landforms that are made up of natural formations. A wide variety of geological features exist in nature, including mountains, valleys, canyons, caves, and others.

There are a variety of geological features that can be created as a result of tensional, compressional, or shear stresses.

Let's take a closer look at each type of stress:

Tensional: Tensional forces act to pull rocks apart. This can result in the formation of fault-block mountains, valleys, and rifts.

Compressional: Compressional forces act to push rocks together. This can lead to the creation of mountain ranges, folded mountains, and plateaus.

Shear Stresses: Shear stresses act to twist or bend rocks. This can result in the formation of faults, folds, and other geological features.


The forces that create geological features are typically produced by the movement of tectonic plates beneath the earth's surface.

When two tectonic plates come together, they can create compressional forces. When they move apart, they can create tensional forces.

When they slide past each other, they can create shear stresses. Other forces can also play a role, such as erosion or the buildup of sediment over time.

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A marble rolled down an inclined ramp with an acceleration of 0.500 m/s for 7.00 seconds will travel meters from the point where it was released, A. 12.3 B. 24.5 C. 1.80 D. None of the above

Answers

The marble that rolled down an inclined ramp with an acceleration of 0.500 m/s for 7.00 seconds will travel 12.3 meters from the point where it was released. Thus, the correct option is A.

What is the distance covered by marble?

An inclined ramp is a simple machine that reduces the amount of force needed to move an object up an incline. The force that makes the marble move is gravity. When a ball is rolled down an inclined ramp, it gains speed and momentum due to gravity. The formula for the distance travelled by a ball is given by:

d = (1/2) × a × t²

where, a is the acceleration of the ball, t is the time for which the ball is rolled down the ramp, d is the distance travelled by the ball.

Using the above formula, we can calculate the distance travelled by the ball. So, substituting the given values in the formula:

d = (1/2) × 0.500 m/s² × (7.00 s)²

d = (1/2) × 0.500 m/s² × 49.00 s²

d = 12.3 meters

Therefore, the correct option is A.

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A solar sailplane is going from Earth to Mars. Its sail is oriented to give a solar radiation force of FRad = 7.70 × 102 N. The gravitational force due to the Sun is 173 N and the gravitational force due to Earth is 1.00 × 102 N. All forces are in the plane formed by Earth, Sun, and sailplane. The mass of the sailplane is 14,900 kg. What is the magnitude of the acceleration on the sailplane? Answer in m/s2

Answers

The sailplane which is going from Earth to Mars is accelerating at 0.033 m/s² in the direction of solar radiation force.

The force of gravity is a force that arises as a consequence of the mutual attraction of two objects. This gravitational force is usually exerted between two physical objects. Newton's law of universal gravitation states that every point mass in the universe attracts every other point mass with a force that is proportional to the product of their masses.

Acceleration is the rate at which an object changes its speed or direction. Acceleration is a vector quantity that can be positive or negative. If the acceleration is negative, the object slows down. If the acceleration is positive, the object speeds up.

The acceleration on the sailplane can be determined using the following formula:

[tex]F_{net} = ma[/tex]

Where Fnet is the net force acting on the sailplane, m is the mass of the sailplane a is the acceleration on the sailplane.[tex]F_{net} = ma[/tex]

The net force acting on the sailplane can be calculated as:

[tex]F_{net} = F_{rad} - F_{gravitySun} - F_{gravityEarth}[/tex]

Where [tex]F_{rad}[/tex] is the solar radiation force, [tex]F_{gravitySun}[/tex] is the gravitational force due to the sun, and [tex]F_{gravityEarth}[/tex] is the gravitational force due to Earth.

Putting the given values in the above formula:

[tex]F_{net} = 7.70 \times 10^2 N - 173 N - 1.00 \times 10^2 N = 497 N[/tex]

The acceleration on the sailplane is given as:

[tex]a = F_{net} / ma = (497\  N) / 14,900 \ kg = 0.033 \ m/s^2[/tex]

The magnitude of the acceleration on the sailplane is 0.033 m/s² (rounded to three significant figures).

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What two planets are coming together?

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The two planets that are coming together are Saturn and Jupiter. On December 21st, 2020, the two planets will be at their closest point, an event known as the Great Conjunction.

To observe the Great Conjunction, look in the direction of the southwest sky shortly after sunset. The two planets will appear to be close together and will look like one bright star. Make sure to look for them with binoculars or a telescope if you can, as you'll get a better view.The Great Conjunction occurs because Saturn and Jupiter have different orbital periods. Jupiter completes its orbit around the Sun every 11.86 Earth years, while Saturn takes 29.5 Earth years. This means that their orbits don't intersect and they don't come this close together very often. The next time the two planets will come this close together will be in 2080, so be sure to take advantage of this rare opportunity to witness this event in 2020.

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A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. Is a current induced in the ring? If so, what is the direction of current induced in the ring?
(a) clockwise
(b) counterclockwise
(c) The induced current is zero.

Answers

A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. A current induced in the ring, the direction of current induced in the ring is b. counterclockwise.

Electromagnetic induction is a phenomenon where an electromotive force (EMF) is produced in a closed-loop wire when there is a change in the magnetic field within the loop. Electromagnetic induction is based on Faraday's Law, which is one of Maxwell's equations. It's named after Michael Faraday, who discovered it. The magnetic flux through the loop (N = number of turns) and the time rate of change of the magnetic field (ΦB) is what produces the EMF, according to Faraday's Law.

The Faraday's Law is shown below:- ε = -N (dΦB / dt)Where ε is the EMF and ΦB is the magnetic flux. The negative sign indicates that the EMF's direction opposes the change in magnetic flux, according to Lenz's Law. A conducting ring sits in a magnetic field directed into the page that is decreasing in magnitude as a function of time. Is a current induced in the ring? Yes, a current is induced in the ring.What is the direction of current induced in the ring?The induced current in the ring is counterclockwise.

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yoda is 500km above the surface of the earth. if yoda have a mass of 96kg, what speed must he have to stay in a circular orbit around the earth at that altitude.

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To stay in a circular orbit around the Earth at 500 km altitude, Yoda must have a speed of 7.9 km/s.  Yoda must be moving at a speed of approximately 7,901 m/s to stay in a circular orbit around the Earth at an altitude of 500 km.


The altitude of Yoda above the surface of the Earth is 500km. To stay in a circular orbit around the Earth at that altitude, Yoda needs a certain speed. What is that speed? The answer is that the speed that Yoda needs to stay in a circular orbit around the Earth at an altitude of 500km is 7793.61 m/s.To stay in a circular orbit around the Earth at a constant altitude of 500 km, Yoda must be moving at a specific speed, known as the orbital velocity. This velocity is determined by the gravitational force between Yoda and the Earth, which must balance the centrifugal force of Yoda's motion around the Earth.

The orbital velocity can be calculated using the following equation:

v = sqrt(GM/r)

where v is the orbital velocity, G is the gravitational constant, M is the mass of the Earth, and r is the distance from the center of the Earth to Yoda's position, which is the sum of the Earth's radius and Yoda's altitude above the surface.

Substituting the given values, we have:

v = sqrt((6.6743 x 10^-11 m^3 kg^-1 s^-2) x (5.9722 x 10^24 kg) / (6,371 km + 500 km))

Note that we have converted the altitude of Yoda into kilometers and added it to the radius of the Earth (6,371 km) to obtain the distance from the center of the Earth to Yoda's position.

Simplifying the equation, we get:

v = sqrt(3.986 x 10^14 m^3 s^-2)

v ≈ 7,901 m/s

Therefore, Yoda must be moving at a speed of approximately 7,901 m/s to stay in a circular orbit around the Earth at an altitude of 500 km.

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When two metal spheres are connected by a metal wire?

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The charge is shared equally between the two spheres because metals are good conductors of electricity.

When two metal spheres are connected by a metal wire, the charge is distributed equally between the two spheres. This occurs because metals are good conductors of electricity, which allows electrons to flow freely between them.

The electrons will move from one sphere to the other, redistributing the charge until their charges are equal. This is because of the principle of electric charge distribution, which states that a conductor will always redistribute electric charge until it reaches equilibrium.

The process of connecting two metal spheres with a wire and allowing the electrons to flow between them is an example of electrical conduction.

This is a fundamental process in electrical circuits and is the basis for many important technologies, including electronics, power generation, and transmission.

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at what angle above the horizon is the sun when light reflecting off a smooth lake is polarized most strongly?

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The sun is at an angle of approximately 37 degrees above the horizon when light reflecting off a smooth lake is polarized most strongly.

When unpolarized light reflects off a smooth surface, such as a lake, it becomes polarized in a direction perpendicular to the surface. The angle at which this polarization is strongest is known as the Brewster angle, and can be calculated using the formula:

θB = arctan(n2/n1)

where θB is the Brewster angle, n1 is the index of refraction of the medium the light is coming from, and n2 is the index of refraction of the medium the light is entering.

For water, the index of refraction is approximately 1.33, and for air it is approximately 1.00. Plugging these values into the formula, we get:

θB = arctan(1.33/1.00) = 53.1 degrees

However, this is the angle at which the light is reflected off the surface in a direction perpendicular to the surface. To find the angle above the horizon at which the light is polarized most strongly, we need to subtract 90 degrees from the Brewster angle:

37 degrees = 90 degrees - 53.1 degrees

Therefore, the sun is at an angle of approximately 37 degrees above the horizon when light reflecting off a smooth lake is polarized most strongly.

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A 200 g air-track glider is attached to a spring. The glider is pushed 10.0 cm against the spring, then released. A student with a stopwatch finds that 10 oscillations take 12.0 s. What is the spring constant? A 200 g ball is tied to a string. It is pulled to an angle of 8.00degree and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 12.0 s. How long is the string?

Answers

The spring constant of spring is 39.9 N/m and the length of the string is about 47.5 meters.

What is spring constant?

Mass of the air-track glider (m) = 200 g = 0.2 kg

Displacement of the air-track glider (x) = 10.0 cm = 0.1 m

Number of oscillations (n) = 10

Time taken for 10 oscillations (t) = 12.0 s

T = 2π√(m/k)

where, T is the time period of oscillation. Substituting the given values, we get:

12 s = 2π√(0.2 / k)

Solving for k, we get:

The spring constant is 39.9 N/m.

Mass of the ball (m) = 200 g = 0.2 kg

Angle of displacement (θ) = 8.00°

Number of oscillations (n) = 10

Time taken for 10 oscillations (t) = 12.0 s

T = 2π√(L/g)

where, T is the time period of oscillation and g is the acceleration due to gravity. Substituting the given values, we get:

12 s = 2π√(L/9.8)

Solving for L, we get:

L = (12/2π)² × 9.8 = 47.5 m

Therefore, the length of the string is 47.5 meters.

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a very long straight wire carries current 32 a. in the middle of the wire a right-angle bend is made. the bend forms an arc of a circle of radius 14 cm, as show. determine the magnetic field at the center of the arc.

Answers

Therefore, the magnetic field at the center of the arc is 1.005 × 10^-5 T.The formula to determine the magnetic field at the center of the arc of a circle is given by: B = μ₀ I / (4πr)Where,B = magnetic fieldI = current in the wirer = radius of the arc of a circleμ₀ = permeability of free space.

Let P1, P2, and P3 be the three points on the wire as shown in the diagram above, where the bend is at point P2.

The current element dl is pointing out of the page, perpendicular to the plane of the diagram. The magnetic field at point P, which is the center of the arc, is pointing upwards, also perpendicular to the plane of the diagram.

Using the right-hand rule for the cross product, we can see that the direction of the magnetic field due to this current element is clockwise around the current element. Therefore, the contribution of this current element to the magnetic field at point P is pointing downwards.

The distance from the current element dl to point P is the radius of the arc, which is 14 cm. Therefore, we can write:

dB = (μ₀/4π) * (I dl / r²)

We can now integrate this expression over the length of the arc, which is half the circumference of a circle of radius 14 cm:

B = 2 * ∫[0,π] dB = 2 * ∫[0,π] (μ₀/4π) * (I dl / r²)

where the limits of integration are from 0 to π because we are only considering half of the arc.

Since the arc is a quarter of a circle, the length of the arc is (π/2) * 2r, where r is the radius of the arc. Therefore, we can write:

dl = (π/2) * 2r * dθ

where dθ is a small angle element. Substituting this into the integral, we get:

B = 2 * ∫[0,π] (μ₀/4π) * (I (π/2) * 2r * dθ / r²)

Simplifying, we get:

B = (μ₀I/4) * ∫[0,π] dθ

Integrating, we get:

B = (μ₀I/4) * [π - 0]

Finally, substituting the values, we get:

B = (4π × 10^-7 T m/A × 32 A/4) * π

B = 1.005 × 10^-5 T

Therefore, the magnetic field at the center of the arc is 1.005 × 10^-5 T.

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