Compared with the energy produced by fissioning a gram of uranium, the energy produced by fusing a gram of deuterium is
A) more.
B) less.
C) the same.
Answer: A
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When voltage is induced in a coil of wire, current is
A) also induced. B) not induced. C) cancelled.
When you push a crate across a level floor at constant velocity, friction between the crate and the floor is
A) less than your pushing force. B) the same amount as your pushing force. C) more than your pushing force. D) none of the above
Light travels from one place to another along a path of least
A) distance. B) time. C) effort. D) expense. E) complication.
A bolt of lightning strikes the ground 200 m from a 100-turn coil oriented vertically and with the plane of the coil pointing toward the lightning strike. The radius of the coil is 0.800 m and the current in the lightning bolt falls from 6.02 × 106 A to zero in 10.5 ?s. What is the voltage induced in the coil over this time period? [A question for future electrical engineers: is there any way
to get lightning to strike repeatedly at the same point?]
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