Taking the work function into account, electrons ejected from a photosensitive material have
A) less kinetic energy than the absorbed photon's energy.
B) more kinetic energy than the absorbed photon's energy.
C) kinetic energy equal to the absorbed photon's energy.
Answer: A
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A. True B. False
A dragster drives a quarter mile (402 m) at a constant rate of acceleration, starting from rest and finishing the race at a final speed of 450 km/hr. If the mass of the dragster is 975 kg, together with its driver, and rolling friction is ignored, what average power was developed by the engine, if 50% of the power developed by the engine was delivered to the wheels?
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Fill in the blank(s) with correct word
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1.0 2.2 3.4 4.6