A weight suspended from a spring bobs up and down over a distance of 1 m in 2 s. Its frequency is
A) 0.5 Hz.
B) 1 Hz.
C) 2 Hz.
D) none of the above
A
Environmental & Atmospheric Sciences
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A) True B) False
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President Reagan's plane came close to being brought down by a
A) microburst. B) dust devil. C) gravity wave. D) willy-willy. E) Boulder windstorm.
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The length of daylight on the Moon is about ________
A) 24 hours B) two weeks C) 48 hours D) one year E) one month
Environmental & Atmospheric Sciences
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A) Australia B) Greenland C) Europe D) North America E) Most of Earth
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