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Problem 1 Two charges are placed in an electric field a distance r from each other....

Problem 1

Two charges are placed in an electric field a distance r from each other. Charge q1 is positive while charge q2 is negative.

Select all possible changes that will double the electric force between the two charges:

(a) change the sign of q2

(b) half the magnitude of q1 and half of r

(c) double the magnitude of q2 and take half of r

(d) take half of r

(e) double the magnitude of one of the charges

(f) take half of one of the charges and double the distance between the two charges.

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