Electric potential energy of the pair of charges
How far from a -7.20 uCpoint charge must a2.30 uCpoint charge be placed for the electric potential energy of the pair of charges to be -0.400J(Take U to be zero when the charges have infinite separation.)
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Just before arriving to its destination it decelerates at -0.5g and comes to complete stop. what is the time it takes the train to make this 350 mile trip?
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