When an object is lifted 10 m, it gains a certain amount of potential energy. If the same object is lifted 20 m, its potential energy gain is

A) less.
B) the same.
C) twice as much.
D) four times as much.
E) more than four times as much.


C

Environmental & Atmospheric Sciences

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A ball is tossed straight upward at 40 m/s with no air resistance. One second after it reaches the top of its path its speed is

A. zero. B. 10 m/s. C. 20 m/s. D. 30 m/s

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The Russian Federation, Central Asia, and the Transcaucasia sit on multiple tectonic plates

a. True b. False

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A katabatic wind is a cold and ____________________ wind

Fill in the blank with correct word.

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Increasing the amount of carbon dioxide in the atmosphere has the effect of making the ocean ________.

A. adiabatically cool B. richer in 16O relative to 18O C. adiabatically warm D. more basic E. more acidic

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