A 30m steel tape calibrated at 25°c is used at 38°c. Coefficient of thermal linear expansion of steel is 0.01mm
per metre length
if a record length of 170m was made at 38°c, determine the true
length of the measured distance.
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1kg of water contained in a piston-cylinder assembly undergoes two processes in series from an initial state where the pressure is 3.0 bar and the temperature is 150°c process 1-2: the water is compressed isothermally to a volume of 0.25 m^3 with 120 kj of work being done to the system. process 2-3: the water is heated at constant volume to a final pressure of 10 bar. a. find the change in internal energy for the system. b. calculate the amount of heat transferred, in kj. c. sketch both processes on a t-v diagram. (196.33 kj/kg, 76.33 kj)