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Anyone who is an expert in for the record, iām having difficulty understanding the pictures.
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Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
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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 17Ā°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.
Answers: 2
Consider a cube of aluminum, 3.3 cm by 3.3 cm by 3.3 cm. Imagine that one face is initially at 25o C...
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