Chemistry, 24.04.2020 19:54, rickimmorgan
A student makes ice cream using an old-fashioned hand-crank machine. He does 40 joules of work each time he turns the crank in a complete circle. The crank handle makes a circular path with a diameter of 0.5 meters. The student turns the crank at a rate of once every 1.6 seconds.
What is the average power the student’s body produces to operate the machine?
A) 16 watts
B) 25 watts
C) 64 watts
D) 100 watts
Answers: 2
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Using data from seismic waves, geologists have learned that earth’s interior is made up of several
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Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
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Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?
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A student makes ice cream using an old-fashioned hand-crank machine. He does 40 joules of work each...
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