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A steam power plant operates on the reheat Rankine cycle. Steam enters the highpressure turbine at 12.5 MPa and 550°C at a rate of 7.7 kg/s and leaves at 2 MPa. Steam is then reheated at constant pressure to 450°C before it expands in the low-pressure turbine. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Steam leaves the condenser as a saturated liquid. If the moisture content of the steam at the exit of the turbine is not to exceed 5 percent, determine: (a) the condenser pressure, (b) the net power output, and (c) the thermal efficiency.
If the absolute temperature of a blackbody is doubled, by what factor is the total emitted power increased
Two stars are 2.1 Ã- 1011 m apart and are equally distant from the earth. Find the maximum distance that these stars could be from the earth
An observer is located to the right of the prism as shown. Which physical phenomenon is illustrated by the fact that the emerging rays are spread into the component colors of the beam?
The weight in the figure below hangs from a long board of negligible weight. (Let θ = 63.0o and W = 480 N.) Find the magnitude of the tension T in the horizontal rope.
A circular saw blade 0.210m in diameter starts from rest. Find the angular acceleration and the angle through which the blade has turned in this time
Find the capacitance C, the resistance R, and the total energy dissipated in the resistor. At what time is the energy in the capacitor half its initial value?
A 5m-diameter garden pond holds 5.90 times 10^ {3};{rm kg} of water.
f David whirled the sling to the point where the sling subtended an angle is 4.43o with the horizontal, with what speed did the rock strike Goliath?
Determine the radius of curvature of the proton's path while in the field, m Determine the distance the proton traveled in the field, m Determine the time interval for which the proton is in the field.
Two masses traveling at the same speed v0 collide head on. Nothing is known about collision other than that it is not completely inelastic.
A sealed cubical container 17cm on a side contains three times Avogadro's number of molecules at a temperature of 16°C. Find out the force exerted by the gas on one of the walls of the container.
radioactive decay of granite and other rocks in earths interior provides sufficient energy to keep the interior molten
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