Monday
April 21, 2014

Homework Help: Physics

Posted by Lucy on Friday, April 17, 2009 at 10:52pm.

The following questions use a central charge of q1=+2x10^-4C

1. What is the field strength at a distance of 5m from the central charge?
I got 7.2x10^4 However, I'm not sure which unit to use... is it joules?

2. What is the force acting on another charge (+5x10^-4C) which is 5m from the central charge?
I'm not sure which formula to use. Would it be Fe=(kq1q2)/r^2 ? It just doesn't seem right; would I need to use vectors to find the direction?

3. What is the electrical potential for the charge in question #2 if it is moved from infinity to a distance 3m from the central angle?
This confuses me because I thought it was 5m from the central charge, or is this different?

4. What is the difference in electrical potential if the charge from question #2 is moved from 10m away from the central charge to 2m away from it?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - 1. A test charge of +2x10^-7 C is located 5 cm to the right of a ...
Physics - Two oppositely charged spheres, with a centre to centre separation of ...
Physics - 1.) a charge of -2x10^-9 C in an electric field between two metal ...
physics - I have these problems that I keep doing and keep missing. If someone ...
physics - 1. Suppose that the strength of the electric field about an isolated ...
physics - A charge of 1.5uC is placed at the origin, and a charge of 3uC is ...
physical science - a charge of + 2x10-7c is 10cm from a charge of -6x10-6c find ...
Chemistry - Choose the true statements regarding the charge-minimized Lewis ...
Physics - The electric field strength @ distance = 1.0 m from a point charge is ...
Physics - A charge q1=7.8x10^-6 C is placed at the origin. q2=-3.4x10^-6 C is ...

Search
Members