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Steady-state operating data for a simple steam power plant are provided in Fig. P4.102. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine the (a) thermal efficiency and (b) the mass flow rate of the cooling water, in kg per kg of steam flowing.
Determine heat flow, Heat flow through a uniform wall will: a) increase as the thermal resistance increases b) increase as the thickness of the wall increases
A 1.8-kg uniform rod is supported by a pin at O and a spring at A and is connected to a dashpot at B. Determine
Assume they test null hypothesis H0: versus H1: Will the engineers decide to use the steel if H0 is rejected? Will the engineers decide to use the steel if H0 is not rejected?
an oxygen enrichment device is needed for people with impaired respiratory systems. to design such a device it is
The percent transmittance of this solution in a 2.50-cm cell.
As shown, a 3.1-lb ball is suspended at point D inside a box with dimensions w=9.50 ft, d=6.50 ft, and h=4.50 ft. The ball is held in place by three cables anchored at points A,B, and C on the surface of the box.
refrigerant 134a enters an insulated throttling valve at 140 lbfin2 and 80degf. the refrigerant exits the valve at 50
two particles of equal weight are released from rest on a 35 degree incline when they are 20 m apart. the coefficient
A tank at an elevation of z1 = 15 m contains 0.005 kg of saturated liquid H2O at T1 = 200 C and is attached to a paddle wheel. Take the reference state to be T0 = 25 ?C and p0 = 101.3 kPa. Compute the exergy transfer due to the process and the amount..
A pitot-static tube measures the total pressure pT and the local pressure p in a uniform ?ow in a 4-cm- diameter water pipe. Calculate the ?ow rate if:
When subjected to 1kN axial tension, bar 1 elongates by 5mm. What will be the elongation of bar 2, d2, if it is compressed axially with a load of 25kN
Sketch crystallographic planes with the following Miller-Brava is indices in a hexagonal unit cell: (a) 1(Bar)101 ; (b) 2(Bar)112 . Mark the origin and axes. Explain your answers.
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