The magnitude of the mass's acceleration as it passes through the lowest point of its motion is 0.34g.
option D.
What is the acceleration of the pendulum?At the lowest point of the pendulum's motion, the tension in the string is equal to the weight of the mass, and the direction of the tension is horizontal. Therefore, the vertical component of the gravitational force on the mass is balanced by the tension in the string, and the net force on the mass is the horizontal component of the gravitational force.
The horizontal component of the gravitational force is given by:
F = mg sinθ
where;
m is the mass of the pendulum, g is the acceleration due to gravity, and θ is the angle between the string and the vertical.At the lowest point of the pendulum's motion, this force provides the centripetal force required to keep the mass moving in a circular path.
Therefore, we can set this force equal to the centripetal force:
F = mv²/r
where;
v is the speed of the mass and r is the radius of the circular path.The radius of the circular path is equal to the length of the string, L. We can express v in terms of the height h that the mass has fallen from its initial position:
v² = 2gh
where;
g is the acceleration due to gravity.Substituting the expressions for F and v² into the equation for the centripetal force, we get:
mg sinθ = mv²/r
mg sinθ = m(2gh)/L
g sinθ = 2gh/L
Solving for the acceleration a = g sinθ, we get:
a = 2gh/(L sinθ)
Substituting the given values, we get:
a = 2 * 9.81 m/s² * (sin 20°) / (L)
a ≈ 0.34g
Therefore, the magnitude of the mass's acceleration as it passes through the lowest point of its motion is approximately 0.34 times the acceleration due to gravity, or 0.34g.
So the correct option is (d) 0.34g.
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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.
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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spherical capacitor contains a charge of 3.20nCwhen connected to a potential difference of250V. If its plates are separated by vacuum and theinner radius of the outer shell is 4.60cm.
A) Calculate the capacitance.
B) Calculate the radius of the inner sphere.
C) Calculate the electric field just outside the surface of theinner sphere.
A) The capacitance of the spherical capacitor is 1.45 pF (picofarads), B) The radius of the inner sphere is 3.60 cm. and C) The electric field just outside the surface of the inner sphere is [tex]2.36 * 10^6 V/m[/tex] (volts per meter).
To calculate the capacitance, we can use the formula C = Q/V, where Q is the charge and V is the potential difference. Plugging in the values, we get [tex]C = (3.20 * 10^{-9} C)/(250 V) = 1.28 * 10^{-11} F[/tex].
However, since the capacitor is a spherical one, we need to use the formula for the capacitance of a spherical capacitor, which is [tex]C = (4\pi \epsilon_0)(r_1 r_2)/(r_2-r₁)[/tex], where r₁ and r₂ are the radii of the two shells and ε0 is the permittivity of free space.
Rearranging the formula and plugging in the values, we get [tex]r_1 = (C/4\pi \epsilon_0)(r_2-r_1)/r_2,[/tex] which gives us r₁ = 3.60 cm.
To calculate the electric field just outside the surface of the inner sphere, we can use the formula
E = [tex]\frac{Q}{4\pi\epsilon_0 r^2}[/tex], where r is the radius of the inner sphere.
Plugging in the values, we get [tex]E = (3.20 * 10^{-9} C)/(4\pi\epsilon_0(0.0460 m)^2) = 2.36 * 10^6 V/m.[/tex]
This electric field arises due to the charge on the inner sphere and induces an opposite charge on the outer shell of the capacitor.
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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
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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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?
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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Does high air pressure mean high humidity?
Answer:
Explanation:
What type of repetitions are completed with an intentionally reduced range of motion?
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.
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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an arrow leaves a bow with a speed of 42 m/s. its velocity is reduced to 34 m/s by the time it hits its target. how much distance did the arrow travel over if it were in the air for 2.4 seconds?
The distance did the arrow travel over if it were in the air for 2.4 seconds is 100.8 meters.
What is the distance?An arrow leaves a bow with a speed of 42 m/s. Its velocity is reduced to 34 m/s by the time it hits its target. And the arrow traveled in the air for 2.4 seconds.
To find the distance traveled by the arrow, we can use the following formula:
S = v₀t + 1/2at²
where, S = distance traveled v₀ = initial velocity = 42 m/s, t = time taken = 2.4 s, a = acceleration = ? u = final velocity = 34 m/s.
As per the question, the arrow is traveling through the air, so the acceleration is due to gravity, which is equal to 9.8 m/s².So, a = 9.8 m/s². Now, we can substitute the given values in the above formula:
S = 42 m/s × 2.4 s + 1/2 × 9.8 m/s² × (2.4 s)²
S = 100.8 m.
The arrow traveled approximately 100.8 meters in the air.
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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?
explain why hydrogen is not a dominant component of the atmospheres of the terrestrial planets, even though it is the most common element in the universe and in the solar system.
Hydrogen is not a dominant component of the atmospheres of the terrestrial planets, even though it is the most common element in the universe and solar system because it is a volatile and low molecular weight element.
What is Hydrogen?Hydrogen element is not a dominant component of the atmospheres of the terrestrial planets, even though it is one of the most common element in the universe and in the solar system as well because the planets were formed through the accretion.
Accretion is the process by which the small particles combine into progressively larger bodies which become planets. As a result of this, the process left behind the lighter gas elements such as hydrogen and helium. The gas molecules of hydrogen atom are lighter than the rest of the chemical elements, therefore the gravity of the terrestrial planets is not sufficient to hold them. As a result, hydrogen escapes from the planet's atmosphere, leaving behind the heavier elements like carbon dioxide, nitrogen, and oxygen in their atmospheres.
Therefore, although hydrogen is the most common element in the universe and in the solar system, it is not a major constituent of the terrestrial planets.
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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.
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).
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.
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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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.
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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in addition to hundreds of smaller objects they have been discovering in the kuiper belt recently, astronomers were surprised to find
In addition to hundreds of smaller objects they have been discovering in the Kuiper Belt recently, astronomers were surprised to find dwarf planet Eris.
The first object that was bigger than Pluto was Eris. The initial estimate of Eris' size was 1,240 miles (2,000 kilometers) in diameter. It was later discovered to be a bit smaller, with a diameter of 1,163 miles (1,864 kilometers). Its moon, Dysnomia, was also discovered.Eris' orbit is far more eccentric than Pluto's, ranging from 38 to 97 astronomical units (AU) from the Sun.
Eris takes 557 Earth years to orbit the Sun. Despite the fact that Pluto's path also varies in shape, it is always closer to the Sun than Eris. Pluto and Eris were both discovered in the early 21st century, in 1930 and 2005, respectively. Because it was the largest known body in the Kuiper Belt, Pluto was formerly classified as the Solar System's ninth planet. Following the discovery of Eris and other trans-Neptunian objects, Pluto was reclassified as a dwarf planet.
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the bottom of the tank is 30 feet in diameter and groundwater level is 10 ft above the bottom of the tank. how much force is being exerceted on the bottom of the tank?
The bottom of the tank is 30 feet in diameter and the groundwater level is 10 ft above the bottom of the tank. This means that the total force being exerted on the bottom of the tank is equal to the pressure of the water at 10 ft depth, multiplied by the area of the tank.
The pressure of water at 10 ft depth can be calculated using the formula: Pressure = Density of Water x Gravity x Depth
Therefore, the force exerted on the bottom of the tank is:
Force = Density of Water x Gravity x Depth x Area of the TankWhere:
Density of Water is 62.4 lb/ft³Gravity is 32.2 ft/s2, Depth is 10 ftArea of the Tank is 706.5 ft²Therefore, the total force exerted on the bottom of the tank is: Force = 62.4 x 32.2 x 10 x 706.5 = 1358561.2 lbf.
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2.1 What is meant by triboelectric charging?
Answer:
Explanation:
The triboelectric effect (also known as triboelectric charging) is a type of contact electrification on which certain materials become electrically charged after they are separated from a different material with which they were in contact.
Use the spectroscopy interactive to determine the wavelength and relative intensity of the most intense line in each element's spectrum. Helium wavelength: nm relative intensity: Hydrogen wavelength: nm relative intensity: Sodium Sodium וח wavelength: relative intensity:
Helium wavelength: 587.6 nm ,relative intensity: 100%,Hydrogen wavelength: 656.3 nm ,relative intensity: 100%,Sodium wavelength: 589.0 nm, relative intensity: 100%
In a spectrum, the wavelength of the line corresponds to the color of the light, and the intensity corresponds to the brightness or how prominent the line is.Using the spectroscopy interactive, we can determine the most intense line in each element's spectrum:
Helium: The most intense line in the helium spectrum is the bright yellow line at 587.6 nm, with a relative intensity of 100%.
Hydrogen: The most intense line in the hydrogen spectrum is the red line at 656.3 nm, with a relative intensity of 100%.
Sodium: The most intense line in the sodium spectrum is the bright yellow doublet at 589.0 nm, with a relative intensity of 100%.
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What two planets are coming together?
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.For more questions on Great Conjunction
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Two planets A and B, where B has twice the mass of A, orbit the Sun in circular orbits. The radius of the circular orbit of planet B is two times the radius of the circular orbit of planet A. What Is the ratio of the orbital period of planet B to that of planet A? T_B/T_A = 2 T_B/T_A = Squareroot 1/8 T_B/T_A = Squareroot 2 T_B/T_A = 1 T_B/T_A = 1/2 T_B/T_A = Squareroot 8 T_B/T_A = 1/8 T_B/T_A = 1/4
The ratio of the orbital period of planet B to that of planet A is T_B/T_A = Squareroot 8.
What are planets?A planet is an astronomical object that orbits a star and does not produce its own light. The vast majority of the thousands of objects we call planets orbit a star in our Solar System. This specific system includes the sun and the eight planets that orbit around it.
Two planets A and B, where B has twice the mass of A, orbit the Sun in circular orbits. The radius of the circular orbit of planet B is two times the radius of the circular orbit of planet A. The formula for calculating the time period of a circular orbit is:
T = (2πr) / v
where, r = radius, v = velocity
For circular orbits, T ∝ (r³/²)
Therefore, T_B/T_A = (r_B³/²) / (r_A³/²)T_B/T_A = (2³/²) / 1³/2T_B/T_A = (square root 8)/1T_B/T_A = Squareroot 8.
Therefore, the ratio of the orbital period of planet B to that of planet A is T_B/T_A = Squareroot 8.
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The table shows information about two waves. Based on the given information, which conclusion can be made?
(1 point)
Wave X has a faster speed.
Wave W has a greater amplitude.
Wave X has a greater amplitude.
Wave W has a faster speed.
Answer:
wave x has greater amplitude
determine whether each geologic feature is being caused by tensional, compressional, or shear stresses by analyzing the directions of the forces being applied.
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 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?
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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When two metal spheres are connected by a metal wire?
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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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?
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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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?
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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The colors on an oil slick are caused by reflection and (explain why)
a. Diffraction
b. Interference
c. Refraction
d. Polarization
e. Ionization
"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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what is the difference between polarized and non polarized?
Polarized and non-polarized refer to the nature of the electric charge distribution in a molecule, electromagnetic wave, or electronic component. Polarization creates a dipole moment, while non-polarization has a neutral distribution of charges.
Polarized and non-polarized are terms that are often used in the field of electricity, electronics, and physics. These terms refer to the nature of the electric charge distribution in a molecule or object. Polarization refers to the separation of positive and negative charges, which creates a dipole moment, whereas non-polarization refers to a neutral distribution of charges.
In chemistry, polar molecules have a non-uniform distribution of electrons, which leads to an unequal sharing of electrons between atoms. In other words, one atom in the molecule attracts electrons more strongly than the other, creating a partial positive and negative charge separation. For example, water is a polar molecule because oxygen has a higher electronegativity than hydrogen, leading to a dipole moment. On the other hand, molecules like carbon dioxide are non-polar because the electronegativity of carbon and oxygen are similar, leading to a neutral distribution of charges.
In physics, polarization refers to the orientation of the electric field vector of an electromagnetic wave. A polarized wave oscillates in a fixed plane, whereas a non-polarized wave oscillates in multiple planes. Polarized waves are often used in optical applications like sunglasses to reduce glare and enhance contrast.
In electronics, polarized components like capacitors, diodes, and electrolytic capacitors have a defined positive and negative orientation. Installing these components backward can cause failure or damage to the circuit. Non-polarized components like resistors and ceramic capacitors can be installed in any orientation since they have no polarity.
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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
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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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
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 mass of 0.3 kg hangs motionless from a vertical spring whose length is 1.08 m and whose unstretched length is 0.42 m. next the mass is pulled down to where the spring has a length of 1.21 m and given an initial speed upwards of 1.2 m/s. what is the maximum length of the spring during the motion that follows?
The maximum length of the spring (Lmax) is about 1.25 meters.
What is the maximum length of spring?To calculate the maximum length of the spring during the motion that follows, we can use the following equation:
Lmax = L₀ + (mv²) / (2k)
where L₀ is the unstretched length of the spring, m is the mass of the object, v is the initial velocity, and k is the spring constant. In this case, L₀ = 0.42 m, m = 0.3 kg, v = 1.2 m/s, and k = 39 N/m.
The maximum length of the spring is:
Lmax = 0.42 + (0.3 × (1.2)²) / (2 × 39) = 1.25 meters
Therefore, the maximum length of the spring during motion is 1.25 meters.
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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.
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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