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Question: physics 4a collected homework 1 1 a proton travels directly...

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Physics 4A: Collected Homework 1 1. A proton travels directly (head on) towards a stationary lead nucleus, with an initial speed vo, when the proton is a distance zo from the nucleus. It undergoes an acceler ation of magnitude a = kx-2 directed away from the nucleus, where x is the distance from the proton to the nucleus and k is a positive constant. (Assume the lead nucleus remains stationary throughout.) (a) Give an expression for how the velocity of the proton depends on x. (It will also depend on k, vo, and ro.) (b) Find an expression for the distance of closest approach of the proton to thenu cleus.
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