Question:
(a) What is the electric field strength due to a point charge of 2.4 at a position 8.6 cm away from the charge?
(b) What is the magnitude of the electric force on a charge of −3.4 that is 8.6 cm away from the point charge in part a?
(c) Draw a sketch of the two charges, from parts a and b, and indicate the direction of the electric force on the second charge due to the original point charge.

Answers

Answer 1

(a) The electric field strength (E), due to a point charge is a measure of how much force an object would experience per unit of charge if it were placed in the field.

To calculate it, you need the charge of the point, the distance from the point charge, and a constant called Coulomb constant (k). The formula is E = k * q / r^2, where q is the charge, r is the distance and k is Coulomb constant. In this case, the charge is 2.4 Coulombs and the distance is 8.6 cm, when you calculate this you get E = 2.3*10^8 N/C.

So the electric field strength at a point 8.6 cm away from a point charge of 2.4 C is 2.3*10^8 N/C.

(b) The magnitude of the electric force on a charge of -3.4 microcoulombs that is 8.6 cm away from a point charge of 2.4 microcoulombs can be calculated using Coulombs law:

F = k * (q1*q2)/r^2

where k is Coulombs constant, q1 is 2.4 microcoulombs, q2 is -3.4 microcoulombs, and r is 8.6 cm.

The force magnitude is approximately equal to 1.97 * 10^-5 N.

Note that the direction of the force will be repulsive as the charges are opposite in sign.

(c) I won't draw a sketch for you, but to draw a sketch of two charges yourself:

You can draw a small circle for each charge, with the size of the circle representing the magnitude of the charge. Label the first charge with a + sign to indicate it's positive and the second charge with a - sign to indicate it's negative. Draw an arrow from the second charge towards the first charge to indicate the direction of the electric force, it should be pointing from the negative charge to the positive charge because the force is attractive.

I hope this helps some, I'm sorry I cannot answer completely.

Related Questions

Match the correct numbers and letters together please.

Answers

Transmitter: encodes the wave with information to be deliveredReceiver: decodes the wave and turns it into useful formAntenna: sends or accepts the wave carrying information

What is a wave?

A wave in physics is a moving disturbance in the energy level of a field.

A transmitter is an electronic device that generates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech, music, TV or other sources, and broadcasts the resulting signal from an antenna.

The antenna is an apparatus to receive or transmit electromagnetic waves and convert respectively to or from an electrical signal.

Receiver is one of the several electronic devices that receive electromagnetic waves, or signals transmitted as such.

Therefore, the correct description of a transmitter, a receiver and an antenna is given above.

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Two very light1
neutral metal spheres (A and B) hanging from insulating string are at rest
touching each other. An insulated, positively charged rod is brought in contact with A (on the side
opposite from B) and then removed. (Assume the spheres do not move because of the normal force
between the rod and sphere, nor do the spheres move before the rod touches A.) How do the spheres
move? Explain.

Answers

Answer:

The spheres do not move.

Explanation:

Both spheres start neutral, meaning they have an equal number of positive and negative words.

The spheres are metal, so they are conductors. When the positively-charged rod touches sphere A, the negative charges in both spheres are attracted towards the rod, and the positive charges in both spheres are repelled away.

When the rod is removed, sphere A will have a negative charge, and sphere B will have a positive charge. The electrostatic force will pull the spheres together. Since they are already touching, the spheres will not move.

two harmonic waves are described by y1= (4m) sin (8/mx-300/s t) y2=(4m) sin (8/mx-300/s t-2) what is the wavelength of the resultant wave ?

Answers

The combined wave has a wavelength of 0.785 meters, which is the same as the combined wavelength of the two component waves. Duration is the interval between a wave's summit or valley and the succeeding wave.

What is a wave length?

The distance between two successive peaks or troughs of a wave is measured in terms of its wavelength. It is often measured in meters, centimeters, or nanometers and is the inverse of frequency. The length of a wave is the distance it travels before repeating its pattern.

⇒ y₁ = ( 4 m)sin ( (8x/m) - (300t/s) )

⇒ y₂ = ( 4 m)sin ( (8x/m) - (300t/s) - 2 )

⇒ 0.785 m

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