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2-kg of saturated liquid R-134a with an initial temperature of -10 C is contained in a well-insulated, weighted post cylinder device. This device contains an electrical resistor to which 10 volts are applied causing a current of 2 amperes to flow through the resistor.
Determine the time required for the refrigerant to be converted to a saturated vapor, and the final temperature.
1 a gas turbine power plant produces a net power output of 100 mw with an overall thermal efficency of 35a if the
steam at mpa 500 degrees c enters an insulted turbine operating at steady state with a mass flow rate of 7 kgs and
initially an insulated rigid tank contains 15.65 kg of water at 24.16oc and 101 kpa. the tank also contains a 3.12 kg
a fluid is held between a lower place of temperature t1 and an upper place of temperature t2 the distance between the
the aluminum shade for the small high intensity lamp has a uniform thickness of 1mm. Knowing that the density of aluminum is 2800 kg/m^3, determine the mass of the shade.
While jogging on the beach (it's a warm summer day, about 30 deg C) a high-speed jet flies overhead. You guesstimate it's an altitude of about 3500 m, and count off about 5 s before you hear it. Estimate the speed and Mach number of the jet.
the structure consists of a quarter-circular rod ab with radius 150mm that is fixed in the xy plane. cd is a straight
refrigerant 134a at -10degc 1.4 bar and a mass flow rate of 280 kghr enters an insulated compressor operating at steady
air at 100 kpa and 27degc enters an isentropic compressor at a rate of 100 ls and leaves at 1000 kpa. determine the
steam enters an adiabatic turbine steadily at 10 mpa and 500 degc and leaves at 10 kpa with a quality of 90 percent.
briefly explain a why there may be significant scatter in the fracture strength for some given ceramic material and b
a 1x2-in bar is 20 in. long and made of steel with sy 25ksi. with a safety factor of 4 what axial compressive load can
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