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An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium. Determine the final temperature in °C, the entropy change for the copper vessel and each of the liquid water masses, and the amount of entropy produced.
an office worker claims that a cup of cold coffee on his table warmed up to 80degc by picking up energy from the
the wing area of the lockheed f-104 straight-wing supersonic fighter airplane is approximately 210 ft2. the weight of
an ideal diesel cycle with a compression ratio of 17 and a cut off ratio of 2 has a temperature of 105 fahrenheit and a
Evaluate thermal efficiency of the cycle
refrigerant 134a at -10degc 1.4 bar and a mass flow rate of 280 kghr enters an insulated compressor operating at steady
to study the performance of a race car a high speed camera is positioned at point a. the camera is mounted on a
the heat flux through a 1-mm thick layer of skin is 1.05 x 104 wm2. the temperature at the inside surface is 37degc and
a four cylinder 2.4 liter engine operates on a four stroke cycle at 3200 rpm. the compression ratio is 9.41 the
a steel cable is used to support an elevator cage at the bottom of a 2000 ft deep mineshaft. a uniform normal strain of
steam enters an adiabatic turbine at 8 mpa and 520 degc with a volumetric flow rate of 0.8 m3s and exits at 30 kpa. the
consider two identical rooms one room has a refrigerator in it the other does not. all the doors and windows in each
A high performance F-16 fighter is flying at Mach 0.96 at sea level. What is the air temperature at the stagnation point at the leading edge of the wing?
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