Pumped storage facilities ________
a. increase the overall efficiency of a power plant
b. make use of the output of electricity from photovoltaic cells
c. are used to produce electricity mainly at night
d. have an increase in their potential energy mainly at night
e. cannot be used with a nuclear plant
d
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A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path? (deuteron: m = 3.3 × 10?27 kg, q = 1.6 × 10?19 C)
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For every ton of coal burned, the approximate amount of CO2 injected into the atmosphere is
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A monkey hangs on a rope. What forces act on the monkey? (Ignore forces due to the air.)
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