Now, select the Slits simulation at the bottom of the screen, and Light (red) for the type of wave, as before. Also, make sure there is a barrier with one slit, and use the tape measure as well as the slider bar below the slit to place it roughly 1290 nm away from the light source. Adjust the slit width to 300 nm. Finally, select the start button at the source location to begin producing the waves. Which statement best describes how the intensity of the wave depends on position along the screen? Selecting the Intensity checkbox will show a plot of the intensity on the screen. a)The intensity is large near the middle of the screen, then decreases to nearly zero, and then increases again as the distance from the middle of the screen increases. b)The intensity is a maximum near the middle of the screen (directly to the right of the source) and significantly decreases above and below the middle of the screen. c)The intensity is roughly constant.

Answers

Answer 1

Light intensity can be estimated using either the total wave output, luminosity, or brightness.

Thus,  It is a measurement of the amount of power either emitted or reflected by a source. Intensity and luminosity work together to determine brightness.

Luminosity is the most widely used unit to measure light intensity because scientists typically find that examining the entire output spectrum is the most beneficial.

The intensity of light formula becomes eqI = fracLA/eq when luminosity L is substituted. The surface area of a sphere must be used as the denominator in the calculation to appropriately measure light intensity because light waves propagate in all directions.

Thus, Light intensity can be estimated using either the total wave output, luminosity, or brightness.

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Related Questions

What two planets are coming together?

Answers

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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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?

Answers

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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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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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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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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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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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?

Answers

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 Tank

Where:

Density of Water is 62.4 lb/ft³Gravity is 32.2 ft/s2, Depth is 10 ftArea of the Tank is 706.5 ft²

Therefore, 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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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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in addition to hundreds of smaller objects they have been discovering in the kuiper belt recently, astronomers were surprised to find

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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 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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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:

Answers

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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a centrifuge in a medical laboratory is rotating at an angular speed of 3600 rev/min. when switched off, it rotates 50 times before coming to rest. find the constant angular deceleration of the centrifuge.

Answers

The constant angular deceleration of the centrifuge is 225 rad/s².

Given data:

The initial angular speed of the centrifuge = ω1 = 3600 rev/minThe final angular speed of the centrifuge = ω2 = 0 rev/minThe number of rotations made by the centrifuge after the motor is switched off = N = 50 revolutions.

Now, we need to find the constant angular deceleration of the centrifuge.

Since the angular deceleration is constant, we can use the formula of angular displacement:θ = ω1t - (1/2)αt²

Where:

θ = angular displacementω1 = initial angular velocityt = timeα = angular acceleration [constant]

Let's calculate the total time taken by the centrifuge to come to rest.Number of revolutions made by the centrifuge after the motor is switched off = N = 50 revolutions.

The time period of one revolution = T = 60 s / 3600 rev. = 1/60 s/rev. The time taken to complete N revolutions = t = N × T = 50 × 1/60 = 5/6 s

Let's plug in the given values in equation (1):0 - 3600(5/6) = (1/2)α(5/6)²

On solving the above equation, we get:

α = 225 rad/s²

Therefore, the constant angular deceleration of the centrifuge is 225 rad/s².

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what is the difference between polarized and non polarized?

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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

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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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

Answers

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 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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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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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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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

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).

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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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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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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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.

Answers

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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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.

Answers

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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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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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?

Answers

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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3/3 part Analysis and Conclusion:

What causes an atom to become negatively charged?

What causes an atom to become positively charged?

What particle determines the name of the element?

Which particles compose the nucleus?

How is the mass number determined?

What is the name of an element with 3 protons and 3 neutrons?

What is the name of an element with 3 protons and 5 neutrons?

What is the name of an element with 5 protons and 3 neutrons?

What can be altered in an atom without changing its identity?

Reflection: Which particle do you think is most important in an atom? Why?

Was your hypothesis correct? Why or why not?

Answers

Answer:

Analysis:

What causes an atom to become negatively charged?

An atom becomes negatively charged when it gains one or more electrons.

What causes an atom to become positively charged?

An atom becomes positively charged when it loses one or more electrons.

What particle determines the name of the element?

The number of protons in an atom's nucleus determines the name of the element.

Which particles compose the nucleus?

The nucleus of an atom is composed of protons and neutrons.

How is the mass number determined?

The mass number is determined by adding the number of protons and neutrons in an atom.

What is the name of an element with 3 protons and 3 neutrons?

The name of the element with 3 protons and 3 neutrons is lithium-6.

What is the name of an element with 3 protons and 5 neutrons?

The name of the element with 3 protons and 5 neutrons is lithium-8.

What is the name of an element with 5 protons and 3 neutrons?

There is no stable element with 5 protons and 3 neutrons.

What can be altered in an atom without changing its identity?

The number of neutrons in an atom can be altered without changing its identity.

Conclusion:

In conclusion, the number of protons in an atom's nucleus determines the element's name, and the nucleus is composed of protons and neutrons. The mass number is determined by adding the number of protons and neutrons in an atom. An atom becomes negatively charged when it gains electrons and becomes positively charged when it loses electrons. The number of neutrons in an atom can be altered without changing its identity.

Reflection:

In my opinion, the most important particle in an atom is the proton, as it determines the element's identity and properties. The number of protons in an atom's nucleus determines the element's name, and the number of electrons orbiting the nucleus determines its chemical properties. The neutron is also important as it helps stabilize the nucleus and determines the isotope of an element. However, the proton is crucial in determining the element's identity, which is essential in understanding the physical and chemical behavior of that element.

My hypothesis was that the proton is the most important particle in an atom, and I still hold this view. The proton determines the element's identity and is crucial in understanding its properties. The neutron is also essential in determining the isotope of an element and stabilizing the nucleus, but it does not determine the element's identity. The electron is important in determining the element's chemical properties, but it is not as crucial in determining the element's identity as the proton.

When a ball bounces against a wall there will be large change in velocity in short period of time. This means the ____ is large, hence the net ___ must be proportionately large as well.

Answers

A change in velocity in short period of time means the acceleration is large, hence the net force must be proportionately large as well.

What is a force?

A force is a physical quantity that induces a body to undergo an alteration in speed, direction of motion, or shape. A force can be classified as a push or a pull. When forces are equal, the forces are balanced and the object is not moving. Otherwise, if the forces are not equal, making it unbalanced will not give the object any movement.

The force that induces the change in the speed or direction of an object is referred to as a net force. The net force is equal to the product of the mass of the object and its acceleration. Newton (N) is the unit of measurement for force.

When a ball bounces against a wall, there will be a large change in velocity in a short period of time. This means the acceleration is large, hence the net force must be proportionately large as well.

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When two metal spheres are connected by a metal wire?

Answers

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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