Voltage is defined as the ______________ per unit ______________
a. charge; current
b. work; current
c. charge; work
d. work; charge
d
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A laser beam is emitted on earth (event A), bounces off a mirror placed on the moon by Apollo astronauts (event B), and then returns to a detector on earth (event C). The detector is 12 ns of distance from the laser.
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Which one of the following is the correct expression of the cutoff frequency of the metal in terms of its work function?
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If the source moves away from you, the frequency you hear is lower than f
Indicate whether the statement is true or false