Two 4.0kg masses are 3.0m apart on a frictionless table. Each has 1.0 ? C of cha

Question

Two 4.0kg masses are 3.0m apart on a frictionless table. Each has 1.0 ?C of charge.

Part A

What is the magnitude of the electric force on one of the masses?

Express your answer using two significant figures.

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Part B

What is the initial acceleration of each mass if they are released and allowed to move?

Express your answer using two significant figures.

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Two 4.0kg masses are 3.0m apart on a frictionless table. Each has 1.0 ?C of charge.

Part A

What is the magnitude of the electric force on one of the masses?

Express your answer using two significant figures.

F =   N  

SubmitMy AnswersGive Up

Part B

What is the initial acceleration of each mass if they are released and allowed to move?

Express your answer using two significant figures.

a =   m/s2  

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Explanation / Answer

A)

Force = kq1 * q2 /d^2

then

Force = 9*10^9 * 1*10^-6 * 1*10^-6/(3)^2

Force = 1 *10^-3 N

B) acceleration = Force/mass

a = 1 *10^-3 /4

a = 2.5 *10^-4 m/s^2

initial acceleration of each mass is  2.5 *10^-4 m/s^2

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