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A constant pressure is applied to a 0.5 m diameter vertical cylinder of 300 kPa in a piston cylinder device. Atmospheric pressure is 100 kPa. Calculate the mass of the piston and the work needed to move the piston 5 m in the upward direction.
the annual cost of operating a heat pump at year-end prices is r with units of yr. the costs are expected to inflate at
an insulated cylinder is initially divided into halves by a frictionless thermally conducting piston. on one side of
consider a solar pond power plant operating on a closed rankine cycle. using refrigerant-134a as the working fluid
mixture of saturated liquid and saturated vapor of substance water at 95oc enters steady flow adiabatic compressor and
an air standard cycle with variable specific heats is executed in a closed system and is composed of the following four
find the phase compressed liquid superheated vapor saturated liquid saturated vapor or a mixture of saturated liquid
a pot containing 1.0 liters of water at 20 degc is placed on the stove and heat is added to the water at a rate of 500
determine the optimal pressures, temperatures, and fraction of steam extracted to maximize thermal efficiency.
the hot-water needs of a household are met by a 60-l electric water heater whose heaters are rated at 1.6 kw. the
a heat pump with refrigerant 134a is used maintain a house at 25 degc by absorbing heat from a geothermal water source
a large guinea pig weighing 2 kg is riding a skateboard horizontally at a speed of 25 ms. then a force causes the
a 10-kg block is attached to spring a and connected to spring b bycord and pulley. the block is held in the position
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