## Description

Hi

how are u doing ? I have homework in physics 2 the subject about Electricity and Magnetism the homework below

Thank you....

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## Explanation & Answer

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Physics 2

1.

In the below figure, determine the point (other than infinity) at which the

electric field is zero.

We have that:

And

√

2.

Two charged particles are located on the x axis. The first is a charge +Q

at x = −a. The second is an unknown charge located at x = +3a. The net

electric field these charges produce at the origin has a magnitude of

2keQ/a2 . Explain how many values are possible for the unknown charge

and find the possible values.

So we can have two possible values. The first one:

The second one:

3.

A thin rod of length l and u...