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notsponge [240]
3 years ago
7

Anyone know how this work ?? If u know help me it is an exam

Physics
1 answer:
myrzilka [38]3 years ago
6 0

Answer:

D) This is the correct answer

Explanation:

In this exercise the two ball loads are suspended by a thread.

To answer this exercise, let us remember that charges of the same sign repel and charges of a different sign attract.

Therefore, for the system to maintain equilibrium, the two charges must be of the same sign.

When examining the different proposals

A) in this case, as a sphere has no charge, there is no electric force and the induced charge is of the opposite sign, so the spheres attract each other

B) in this case there is an electric force, but being of a different sign, the force is attractive so the system is not in equilibrium

C) as the charges are of different magnitude the system does not have equal angles

D) This is the correct answer, since the charges have the same magnitude and are of the same sign, so the force is repulsive and is counteracted by the weight component

             F_e = W sin θ

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Compute the velocity of an electron that has been accelerated through a difference of potential of 100 volts. express your answe
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The velocity of an electron that has been accelerated through a difference of potential of 100 volts will be 5.93 * 10^{6} m/s

Electrons move because they get pushed by some external force. There are several energy sources that can force electrons to move. Voltage is the amount of push or pressure that is being applied to the electrons.

By conservation of energy, the kinetic energy has to equal the change in potential energy, so KE=q*V. The energy of the electron in electron-volts is numerically the same as the voltage between the plates.

given

charge of electron = 1.6 × 10^{-19} C

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potential energy = work done = Force * displacement

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1/2 *  9.1 × 10^{-31} *  v^{2} = 1.6 × 10^{-17}

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To learn more about  kinetic energy in electric field  here

brainly.com/question/8666051

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1 year ago
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