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Question
An explosion occurs 34 km away. For sound that travels at 340 m/s, you'll hear the explosion inA) 0.1 s.
B) 1 s.
C) 10 s.
D) 20 s.
E) more than 20 s.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Heat energy is measured in units of
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C) calories.
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B) decreases by 100/273.
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If water at 0C slightly increases in temperature, the water
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A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
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Q:
When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
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Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
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D) all of the above
Q:
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Q:
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
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Q:
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B) half as much.
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A) decrease also.
B) increase.
C) remain the same.
Q:
Newton discovered
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A) go into circular orbit about Earth.
B) rise and fall back to Earth's surface.
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B) lower.
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