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Three kg of saturated R-134a inside frictionless piston-cylinder device is at a state (state 1) such that the piston is not moving (equilibrium). The atmospheric pressure around the device is 99.4 kPa and the mass of piston is 2.45 kg. The volume of the system is 90 liters at this state. Heat is then transferred to the system until the internal energy of the system reaches 165 kJ/kg (state 2). The heat transfer will continue until the system T becomes 30 degrees C (state 3). Determine (a) 5 pts. The T(initial) (b) The amount of boundary work done by the system (in kJ) during the process from state 1 to state 2, (c) the phase at state 3 (d) the amount of delta u (in kJ) during the process from state 2 to state 3..
the gas inside a cylinder is confined by a piston to a volume of 100 liters. an external force on the piston changes
Why do thermoplastics tend to become brittle in very cold weather?
a piston-cylinder device contains 0.398 kg of refrigerant-134a at -10 degrees celsius. the piston that is free to move
Block A has a mass of 3 kg and B has a mass of 5 kg. If the system is released from rest, determine the velocity of each block in t=4s. Neglect the mass of the pulleys.
Water as a saturated vapor at 600 °F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..
a piston cylinder arrangement originally contains 0.1 kg of saturated water vapor at 10 bars. a line with steam flowing
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what is creep failure? is creep failure of a material a concern at high temperatures? if so why? explain how creep
the coefficients of friction are ms0.40 and mk0.30 between all surfaces of contact. determine the smallest force p
Consider a single crystal of some hypothetical metal that has the BCC crystal structure and is oriented such that a tensile stress is applied along a [121] direction. If slip occurs on a (101) plane and in a left-bracket Modifying Above 1 With bar 11..
an ideal gas cp5.1926 kjkgk cv3.1156 kjkgk is placed in a piston-cylinder apparatus. the mass of helium is 5kg and the
problem a tension link shown to the right is used in earth-moving equipment and is subjected to cyclic stresses varying
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