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A 3 kg piece of steel is removed from an oven at 700C and placed a water bath. The final temperature of the water is 80C and its initial temperature is 20C. The atmospheric temperature and pressure is 25C and 1 atm.
What is the mass of the water if the bath is adiabatic?
What is the entropy generation of the process?
Fix the irreversibility for the same changes in state and analyze your fix.
What is the exergetic efficiency of the process?
for a wind speed of 6 ms a stack gas exit velocity of 20 ms a stack diameter of 4 m a heat emission rate of 15 mw and
An air compressor operates under steady conditions. Air is compressed from an initial state of 295 K and 101 kPa to a final state of 430 K and 340 kPa. Ignore heat transfer between the compressor and surroundings and ignore kinetic energy and potenti..
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The car travels up the hill with a speed of v = (0.4s) m/s, where s is in meters, measured from A. Determine the magnitude of its acceleration when it is at point s = 50 m, where p = 500 m.
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