Electric Force and Acceleration · PhysicsBowl 2010 #12

Physics · electromagnetism

Problem

A scientist sets up an experiment with a proton of charge QQ and mass MM being placed near a helium nucleus (2 protons and 2 neutrons) of charge 2Q2Q and mass 4M4M. The objects are each released from rest and begin to move. From the scientist's point of view, which choice best describes the object that experiences the greatest magnitude of electric force from the other and which object experiences the greatest magnitude of acceleration? Ignore gravity.
Largest magnitude of forceLargest magnitude of acceleration
(A)The helium nucleusThe helium nucleus
(B)The helium nucleusThe proton
(C)The protonThe accelerations are equal
(D)The forces are equalThe accelerations are equal
(E)The forces are equalThe proton

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