We have enabled User registrations.
0 votes
by
edited by

Electric Potential: finding charges (physics)?

image: image

The graph in the figure shows the electric potential energy as a function of separation for two point charges. If one charge is +0.44 nC, what is the other charge?

answer in nC

thanks

1 Answer

0 votes
by
selected by
 
Best answer

The PE formula is;

U = kqQ/r

From graph U = -4x10^-6 J when r=.01 m

-4x10^-6 = (9x10^9)(.44x10^-9)Q/.01

Q = - 10 nC

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat.
SHOW ANSWER
...