Problem 1 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N-m. Determine the final energy of the system if its initial energy is 12.5 kJ. 500 N-m 2. 511 O 30 kJ
Problem 1 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N-m. Determine the final energy of the system if its initial energy is 12.5 kJ. 500 N-m 2. 511 O 30 kJ
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Please i requested to you solce both questions handwriting please i requested again solve both questions handwriting thanks ?
Transcribed Image Text:Problem 1
Water is being heated in a closed pan on top of a range while being
stirred by a paddle wheel. During the process, 30 kJ of heat is
transferred to the water, and 5 kJ of heat is lost to the surrounding
air. The paddle-wheel work amounts to 500 N-m. Determine the
final energy of the system if its initial energy is 12.5 kJ.
500 N-m
5kJ
O
30 kJ
Transcribed Image Text:Problem 3
A fan moves 0.6 kg/s of air with a velocity of 15 m/s. If the shaft of the fan receives 90 W,
determine the mechanical efficiency of the fan.
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