May 2021 1 33 Report
potential energy question - physics?

The potential at location A is 390 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 799 V, and when released from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2vB. Find the potential at B.

Update:

the answer is 254 V. Just need an equation to get to this point so that i can do more problems like this one.

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