If a light signal and a radio signal were emitted simultaneously from the Moon, the first signal to reach Earth would be
A) radio.
B) light.
C) both of these
D) none of the above
Answer: C
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A) methane and ammonia. B) carbon dioxide and ethane. C) hydrogen and helium. D) hydrogen sulfide and ammonia. E) nitrogen and oxygen.
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(a) How much work is done on the gas in each cycle? (b) How much heat is exhausted into the hot reservoir in each cycle?
An 800 V/m electric field is directed along the +x-axis. If the potential at x = 0 m is 2000 V, what is the potential at x = 2 m?
A) 200 V B) 400 V C) 600 V D) 800 V E) 1000 V