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When thunderstorms occur, the electric field in the atmosphere near Earth is directed upward because of a large quantity of negative charge in the lower portions of the clouds. A typical electric field magnitude in this situation is 2.0 ? 10^4 N/C. (Hint: Remember that the +y-direction must be opposite to the direction of the field.)
(a) Relative to the surface of Earth, what is the electric potential energy of an electron 4.3 m above the surface? (J)
(b) Relative to the surface of Earth, what is the electric potential energy of a proton 4.3 m above the surface? (J)
(c) Relative to the surface of Earth, what is the gravitational potential energy of an electron 4.3 m above the surface? (J)
(d) Relative to the surface of Earth, what is the gravitational potential energy of a proton 4.3 m above the surface? (J)
In a fusion reaction, two deuterium nuclei combine to form a helium nucleus, Find the initial velocity of the second deuterium nucleus
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