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1. During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vdloud - Vground= 1.10 x 10 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the electron moves from the ground to the cloud? J 3. An electric car accelerates for 8.0 s by drawing energy from its 345-V battery pack. During this time, 1370 C of charge passes through the battery pack. Find the minimum horsepower rating of the car. hp 4. A moving particle encounters an external electric field that decreases its kinetic energy from 9820 eV to 7260 eV as the particle moves from position A to position B. The electric potential at A is -58.5 V, and the electric potential at B is +27.9 V. Determine the charge of the particle. Include the algebraic sign (+ or -) with your answer. C