Which of the following must be happening if an object is in uniform circular
motion?
oa...
Physics, 01.11.2019 05:31 Mexicochan
Which of the following must be happening if an object is in uniform circular
motion?
oa. the object's velocity must be changing.
ob. the object's centripetal. acceleration must be changing.
oc. the object must be moving in a straight line.
o d. the object's speed must be changing.
Answers: 2
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Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
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