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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It is possible to totally convert a given amount of mechanical energy into heat
A) True B) False
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Trees of the genus Eucalyptus dominate the vegetation of ________
A) Australia B) Greenland C) Europe D) North America E) Most of Earth
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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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