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Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit to be circular and 860 km above the surface of the Moon, where the acceleration due to gravity is 0.749 m/s2. The radius of the Moon is 1.70 106 m.
(a) Determine the astronaut's orbital speed.
m/s
(b) Determine the period of the orbit.
s
The density of ice is 917 kg/m3. What fraction of the volume of a piece of ice will be above the water when it is floating in fresh water, Fraction of the volume above the water
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In a common lecture demonstration of wave pulses, If the tubing is given a transverse blow at one end, how long will it take the resulting pulse to reach the other end
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