You discovered that when two point charges are separated by 8 cm then the attractive force F, between them is 100 N. A. Find the new force Fʹ, between them when they are separated by 2 cm. B. You are given that charge q1 has twice the charge of q2 (i.e. q1 = 2q2). Now calculate the magnitude of both charges. (k = 9 x 109 N.m2C-2).

College Physics
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Author:Paul Peter Urone, Roger Hinrichs
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Chapter18: Electric Charge And Electric Field
Section: Chapter Questions
Problem 24PE: (a) Two point charges totaling 8.00 C exert a repulsive force of 0.150 N on one another when...
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You discovered that when two point charges are separated by 8 cm then the attractive force F, between them is 100 N.

A. Find the new force , between them when they are separated by 2 cm. 

B. You are given that charge q1 has twice the charge of q2 (i.e. q1 = 2q2). Now calculate the magnitude of both charges. (k = 9 x 109 N.m2C-2). 

 
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