Suppose you climb the stairs of an eight-story building, about 24 m high, and your mass is 70 kg. The gravitational potential energy you gain is about
A. 40 calories.
B. 16,500 calories.
C. 40 Joule.
D. 16,500 Joule.
Answer: D
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Evaporator tubes in a refrigerator are constructed of 1 inch OD aluminum tubing with 1/8 in thick walls. The air surrounding the tubing is at 25ºF and the refrigerant in the evaporator is at 15ºF. Estimate the heat transfer to the refrigerant over 1 foot of length.
What will be an ideal response?
Why was the Martian meteorite ALH84001 singled out for intense study?
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In the case of a force varying with position, what feature of the graph of force vs. position represents the work done during a displacement?
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This photo, taken from orbit of Mars, shows a feature known as
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