A uniform electric field of 8 V/m exists between the plates of a parallel plate capacitor. How much work is required to move a 20 mC point charge from the negative plate to the positive plate if the plate separation is 0.050 m

Answer:

0.1 A

Explanation:

From the question,

V = IR............ Equation 1

Where V = Voltage, I = current, R = Resistance.

Given: I = 0.2 A, R = 10 ohms.

Substitute into equation 1

V = 0.2(10)

V = 2 volt,

If the resistor is replaced with a 20 resistor, The nwe current is

I = V/R................ Equation 2

I = 2/20

I = 0.1 A

Oscillation is motion periodic repetitive motion between two points

Oscillation is the process of moving in back and forth motion regularly Oscillation is defined as the process of repeating variations of any quantity or measure about its equilibrium value in time. Oscillation can also be defined as a periodic variation of a matter between two values or about its central value.

When an object moves frequently back as well as forth, it is said to be oscillating. In contrast, periodic motion describes a movement in which an object repeats a course after a set amount of time. While all periodic motions appear periodic, not even all oscillatory motions are.

Hence, the correct answer will be option (c)

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The range of the pendulum swing is 20 degrees, from -10 degrees to +10 degrees.

What is pendulum swing?

Pendulum swing is a phenomenon in which an object, suspended from a fixed point, swings back and forth in a regular rhythm. The pendulum is a simple mechanical system that has been used in clocks and other timepieces since the 16th century.

Pendulum swings are also used in amusement park rides and scientific experiments. A pendulum is usually made up of a mass, or bob, suspended from a string or wire, and is driven by gravity. As the pendulum swings, the force of gravity causes the bob to move in an arc, oscillating back and forth. The arc of the swing is determined by the length of the string, the mass of the bob, and the strength of the gravitational force pulling on it.

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When Diego is in the race, he would be using only aerobic exercise.

The term aerobic exercise has to do with the type of exercise that require brisk repetitive movements in which the consumption of oxygen is elevated during the process.

A person tends to breath faster and more deeply when carrying out an aerobic exercise and the rapid movements is the reason why there is an intense demand for oxygen in the process.

As such, when Diego is in the race, he would be using aerobic exercise.

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Answer:

the answer is the option C

Answer:

Force exerted on the car is 7030 N.

Explanation:

It is given that,

Mass of the car, m = 740 kg

Initial speed of the car, u = 19 m/s

Final speed of the car, v = 0

Time taken, t = 2 s

Let F is the force exerted on the car during this stop. We know that it is equal to the product of force and acceleration. Mathematically, it is given as :

F=m\times \dfrac{v-u}{t}F=m×tv−u

F=740\times \dfrac{0-19}{2}F=740×20−19

F = -7030 N

So, the force exerted on the car during this stop is 7030 N. Hence, this is the required solution.

According to the given statement is  currents of equal magnitude  the current I is 30mA.

Current is the movement of electrical charge carriers, which are frequently electrons or atoms lacking in electrons. Current is frequently represented with the capital letter I. The common unit is the ampere, which is represented by the letter A.

According to Ohm's equation, V = IR, the current flowing through a conductor is proportional to the voltage V and resistance R. I = V/R is an alternate formulation of Ohm's law.

Distance, r = 6.6 cm

Force per unit length,  = 3.1 nN/m

Current passes, when wire is parallel:

→ I₁ = i₂

We know the relation,

\(\frac{F}{l}=\frac{\mu_0}{2 \pi} \times \frac{I_1 \times I_2}{r}\)

By substituting the values, we get

3.1 × 10⁻⁹ = \(\frac{3 \pi \times 10^{-7}}{2 \pi} \times \frac{I^2}{6.6 \times 10^{-2}}\)

The current will be:

I = 0.030884 A

= 30mA

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Answer:

Too what i know its because of the air

Explanation:

The steel rod is more dense and doesnt have air whil'st the oil tanker is less dense with lots of air

1a: Potential energy is the type of energy that a cart has at the top of the track.

1b: In the middle of the track, the cart has both potential energy and kinetic energy.

1c: At the bottom of the track, the cart has only kinetic energy.

2: At the middle and bottom of the track, the total energy would be: E = 1/2mv2 + mgh/2 - HE.

1a: Potential energy is the type of energy that a cart has at the top of the track. The formula for potential energy is as follows:

P.E = mgh where m represents the mass of the cart, g is the gravitational acceleration (9.8 m/s2), and h is the height of the cart from the ground.

1b: In the middle of the track, the cart has both potential energy and kinetic energy.

In the formula for kinetic energy, KE = 1/2mv2 where m represents the mass of the cart, and v represents the velocity of the cart.

1c: At the bottom of the track, the cart has only kinetic energy.

The formula for kinetic energy is the same as above:

KE = 1/2mv2 where m represents the mass of the cart, and v represents the velocity of the cart.

2: In the presence of friction, the total energy at each location (top, middle, and bottom) will change.

This is because friction converts some of the energy into heat.

At each location, the total energy will decrease.

The formula for total energy is E = KE + PE where KE is kinetic energy and PE is potential energy. In the presence of friction, the formula for total energy will become E = KE + PE + HE where HE is the energy that is lost due to friction.

For example, at the top of the track, the total energy would be:

E = mgh - HE where HE represents the energy that is lost due to friction.

Similarly, at the middle and bottom of the track, the total energy would be: E = 1/2mv2 + mgh/2 - HE.

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Answer:

By elimination I know it's not CGL and I know it's not Charle's Law.

Gay-Lussac's law states the pressure of a a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant. I think it's Gay-Lussac's Law.

Boyle's law states that pressure of a gas tends to increase as the volume of the container decreases which I got from a google search because I didn't know what it was.

CGL is the combined formula of all of these laws by the way

Charle's law is just gas expands when heated.

Gay-Lussac's is the best answer choice in my opinion

Answer:

Neptune

Explanation:

Answer:

Neptune has that feature. Hope this helped!!! ^D^

Explanation:

Answer:Electricity works by getting a bunch of conductor elements together and creating a flow of electron-stealing patterns through them. This flow is called a current. ... Once you can control the direction the electrons are going, you can use them to power or charge anything from a light bulb to your TV to your electric car.

Explanation:trust

I suggest that the students move forward with option A.

Test funnels of the same size and material with varying sized openings. This will allow them to determine the optimal size for the opening that will help direct the marble to the launch pad. Once they have determined the optimal size, they can move forward with constructing the funnel with that size opening.

All of the given options produce an acceleration that are force pairs suggested in Question 5.

When a skier uses her ski poles to start moving downhill then the ski poles exert a backward force on the ground while the ground exerts a forward force on poles and produces acceleration.

Similarly in case B. when a boat propeller spins rapidly in the water the propeller exert a backward force on the water while the water exerts a forward force on propeller and produces acceleration.

In case C. when a baseball player hits a pitched ball with a bat the bat exert a backward force on the ball while the ball exerts a force away from bat and produces acceleration.

In case D. when a party balloon contains rapidly moving helium atoms the helium atoms exert an outward force on the balloon while the balloon exerts an inward force on helium atoms and produces acceleration.

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The phase of the moon cannot be used to determine the age of the solar system. while the phase of the moon is an important aspect of our understanding of the solar system, it is not a tool that can be used to determine the age of the solar system.

The phases of the moon are caused by the moon's position relative to the Earth and Sun, and they repeat on a regular basis. They do not provide any information about the age of the solar system. The age of the solar system is determined through other methods, such as studying the ages of rocks on Earth and on other planets, as well as studying the ages of meteorites. These methods have led scientists to estimate that the solar system is about 4.6 billion years old.

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All periodic motions are not circular bcox they aren't similar to each other as u know the motion repeats the periodic table and also repeats itself of the tym perform the motion of the periodic...

Answer:

t is usually seen that all circular motions are usually periodic

Explanation:

but all periodic motions are not circular

this can be proved by an example for example when vehicles runs in uniform speed of motion then its speed is called periodic motion

where is his speed might not be called circular motion

if my answer is correct please mark my answer as brainliest

Answer:Explanation: The field lines of the electric charges extend from the positive to negative side charge. ... The force between the two charged balls is attractive. It is directly proportional to the product of their charges and inversely proportional to the magnitude of the distance between them.

Explanation:

hope this helps

We presume that the wave function can be written as a product of three one-dimensional wave functions: (x, y, z) = X(x), Y(y), Z.(z). In that case, the three-dimensional harmonic oscillator's Schrödinger equation is as follows:− 2mℏ2(∂x 2∂ 2Ψ+ ∂y 2∂2Ψ+ ∂z 2∂ 2Ψ)+ 21mω 2(x 2+y 2+z 2 )Ψ=EΨ

Each of these equations has the same form as the one-dimensional harmonic oscillator, with a potential proportional to the square of the position and a frequency ω. Therefore, we can use the known energy eigenvalues for the one-dimensional harmonic oscillator to determine the allowed energies for the three-dimensional harmonic oscillator.The energy of a one-dimensional harmonic oscillator is given by En = (n + 1/2)ħω, where n is a non-negative integer. Therefore, the energy of the three-dimensional harmonic oscillator is:E = Ex + Ey + Ez = [(nx + 1/2) + (ny + 1/2) + (nz + 1/2)]ħω

= (nx + ny + nz + 3/2)ħω

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Answer:

As per given Information

we have to find the extension when loaded with given magnitude of force.

Using Formulae

\( \bf \: F = Kx \: \)

where, x is extension

Putting the value we get

\( \sf \twoheadrightarrow \: 15 \: = 5 \times x \\ \\ \sf \twoheadrightarrow \: \frac{15}{5} = x \\ \\ \sf \twoheadrightarrow \cancel \frac{15}{5} = x \\ \\ \sf \twoheadrightarrow \: 3cm \: = x\)

So, required option is (d) 3 cm

Answer:

the mother

Explanation:

the child is smaller and has less mass so it would be easier to push the baby rather than the mother. so you would put more force into pushing the mother

To find the magnitude of the acceleration of the descending block, we can analyze the forces acting on the system.

Since there is no friction, the tension in the string is the same on both sides of the pulley. Let's consider the forces acting on each block individually:

For the block of mass 4m:

Weight (mg) acts downward.

Tension in the string (T) acts upward.

For the block of mass m:

Weight (mg) acts downward.

Tension in the string (T) acts upward.

The net force acting on each block is equal to the mass times the acceleration (F = ma). Since the blocks are connected by a string, they have the same acceleration.

For the block of mass 4m:

mg - T = (4m)a ---(1)

For the block of mass m:

T - mg = (m)a ---(2)

Adding equations (1) and (2), we eliminate the tension T:

mg - T + T - mg = (4m)a + (m)a

0 = (5m)a

Since the net force on the system is zero, the acceleration is zero.

Therefore, the magnitude of the acceleration of the descending block is zero. Option E (g) is the correct answer.

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If you stare at a red object and immediately look at a white area afterward, you will see an afterimage that is the same size and shape, but it is blue-green, or cyan, in color. '

This is known as the opponent process theory

The opponent process theory of color vision says that color is processed in pairs (red-green, yellow-blue, and black-white.)

It means that Light that stimulates one half of the pair inhibits the other half.

In conclusion, this opponent process is thought to be responsible for our perception of color and explains why people experience afterimages.

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When we do, we make sure to measure our mass in kilograms. We determine that F is equal to 124.26 newtons by entering these numbers into our calculator.

That is the average magnitude of the force applied to the tennis ball.

The equation that Newton was referring to is shown by a serve. You can calculate the total force that was applied by the tennis racket to the ball by multiplying the weight of the racket by the speed at which the player swings their racquet.

An average 120-mph serve slows to 82 mph before the bounce, 65 mph after the bounce, and 55 mph at the opponent's racket, according to tennis instructor and analyst John Yandell.

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For someone with a negative Weber slope for weight detection, it would be easier to tell the difference between 20 pounds and 21 pounds.

The Weber's Law states that the just noticeable difference (JND) between two stimuli is proportional to the magnitude of the stimuli. A negative Weber slope indicates that the JND decreases as the magnitude of the stimuli increases. In this case, as the weight increases, the person's ability to discriminate between the weights becomes easier.

Therefore, option C, telling the difference between 20 pounds and 21 pounds, would be easier for someone with a negative Weber slope for weight detection.

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Answer: \(0.708\ mA\)

Explanation:

Given

\(E_o=20\ V/m\)

\(\omega =10^7\ s^{-1}\)

Cross-sectional area \(A=0.40\ m^2\)

Current density is given by

\(J=\epsilon_o \dfrac{dE}{dt}\)

Displacement current

\(\Rightarrow I=JA\\\Rightarrow I=8.854\times 10^{-12}\times 20\times 10^7\times 0.4\\\Rightarrow I=0.708\times 10^{-3}\ A\)

The required value of the maximum displacement current of the given space is  \(7.08 \times 10^{-4} \;\rm A\).

Given data:

The intensity of electric field is, \(E_{0}=20 \;\rm V/m\).

The angular frequency of electric field is, \(\omega=1.0 \times 10^{7} \;\rm s^{-1}\).

The cross-sectional area of space is, \(A =0.40 \;\rm m^{2}\).

In the given problem, the instantaneous electric field is given by \(E = E_{0} \times cos(\omega t)\)

So, the expression for the current density is,

\(J= \epsilon_{0} \times \dfrac{dE}{dt}\)

Here, \(\epsilon_{0}\)  is the permittivity of free space. Solving as,

\(J= \epsilon_{0} \times \dfrac{d(E_{0} \times cos(\omega t))}{dt}\\\\J= -\epsilon_{0} \times E_{0} \times \omega \times sin(\omega t)\)

And the expression for the maximum displacement current is,

\(I = J \times A\)

And the maximum displacement current is possible only when, J is positive and J will be positive for  \(sin(\omega t)=-1\).

Then solving as,

\(I = (-\epsilon_{0} \times E_{0} \times \omega \times sin(\omega t)) \times A\\\\I = (-8.85 \times 10^{-12} \times 20 \times (1.0 \times 10^{7}) \times (-1)) \times 0.40\\\\I = 7.08 \times 10^{-4} \;\rm A\)

Thus, we can conclude that the required value of the maximum displacement current of the given space is  \(7.08 \times 10^{-4} \;\rm A\).

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The energy transformation that is happening in this process is mechanical energy to chemical energy.

According to conservation of energy, energy can not be distroyed and cannot be created, but can only be transformed from one form to another.

The batteries of some flashlights can be charged by turning a handle. The energy transformation that is happening in this process is mechanical energy to chemical energy. The chemical energy will transform to electrical energy which will eventually transform to light energy.

The turning of the handle is mechanical and the energy in battery is chemical.

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