Two identical conducting spheres are separated by a fixed center-to-center dista

Question

Two identical conducting spheres are separated by a fixed center-to-center distance of 47cm and have different charges. Initially, the spheres attract each other with a force of 0.095 N. The spheres are now connected by a thin conducting wire. After the wire is removed, the spheres are positively charged and repel one another with a force of 0.032 N. Find (a) the final and (b) the initial charges on the spheres.

Part A

Express your answer using two significant figures. Enter your answers numerically separated by a comma.

Part B

Express your answer using two significant figures. Enter your answers numerically separated by a comma.

Explanation / Answer

Force of attraction = k . Q1 . Q2 / 0.47^2

F = k . Q(new)^2 / 0.47^2

Q (new) = ? 0.032 . 0.47^2 / 9 . 10^9 = ? 7.85 . 10^

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