Part A What is the magnitude of the force sphere B exerts on sphere A? Express y

Question

Part A
What is the magnitude of the force sphere B exerts on sphere A?
Express your answer in terms of the variables Q, R, and appropriate constants.
F_AB,1 =

Part B
What is the direction of the force sphere B exerts on sphere A?

away from B
away from A
no direction


Part C
An identical sphere with zero charge, sphere { m C}, makes contact with sphere B and is then moved very far away. What is the magnitude of the net force now acting on sphere A?
Express your answer in terms of the variables Q, R, and appropriate constants.
F_AB,2 =

Part D
What is the direction of the net force now acting on sphere A?

away from A
away from B
no direction

Part E
Sphere C is brought back and now makes contact with sphere A and is then moved far away. What is the magnitude of the force on sphere A in this third case?
Express your answer in terms of the variables Q, R, and appropriate constants.
F_AB,3 =

Part F
What is the direction of the force on sphere A in this third case?

away from B
away from A
no direction

Explanation / Answer

a) F = k *q1*q2 / r^2 F = (8.99e9 * Q^2 ) / (R^2) b)since they are like charges, the force will be repulsive. away from B. c) when the netural sphere is in contact, the charge will flow to the netural sphere. F = (8.99e9 * (Q/2) *Q ) / (R^2) d) since both sphere are still positive charge, the direction will remain the same. away from B. e) F = (8.99e9 * (Q/2) * 3Q/4) ) / (R^2) f) since both sphere are still positive charge, the direction will remain the same. away from B.

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