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Homework Statement
A moving particle encounters an external electric field that decreases its kinetic energy from 8560 eV to 6770 eV as the particle moves from position A to position B. The electric potential at A is -50.5 V, and the electric potential at B is +25.9 V. Determine the charge of the particle. Include the algebraic sign (+ or −) with your answer.
Homework Equations
V=EPE/q, EPE=qEx=KE
The Attempt at a Solution
ΔKE/ΔV=q