[1 mC = 10–3 C, 1 ?C = 10–6 C, 1 nC = 10–9 C.]Two small nonconducting spheres have a

Chapter 16, Problem 21P

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QUESTION:

Problem 21P

[1 mC = 10–3 C, 1 μC = 10–6 C, 1 nC = 10–9 C.]

Two small nonconducting spheres have a total charge of 90.0 μC. (a) When placed 1.06 m apart, the force each exerts on the other is 12.0 N and is repulsive. What is the charge on each? (b) What if the force were attractive?

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QUESTION:

Problem 21P

[1 mC = 10–3 C, 1 μC = 10–6 C, 1 nC = 10–9 C.]

Two small nonconducting spheres have a total charge of 90.0 μC. (a) When placed 1.06 m apart, the force each exerts on the other is 12.0 N and is repulsive. What is the charge on each? (b) What if the force were attractive?

ANSWER:

Solution 21P

Step 1 of 3

We need to calculate the force on each charge when the force is repulsive and force is attractive attractive.

Given

C

N

 m

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