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The piston will be moved slowly and reversibly until 25 percent of the liquid has vaporized. Compute the maximum work that can be obtained.
A compressor operating adiabatically is to compress 2.83 m^3/min of air at 29.4 C and 102.7 kN/m^2 to 311.6 kN/m^2.
Calculate the brake KW of the fan and its efficiency is 65% and the gas has a molecular weight of 30.7. assume incompressible flow.
A force acts at the origin of a coordinate system in a direction defined by the angles qx = 65.0° and qz = 69.7°. Knowing that the y component of the force is -920 lbs determine the other co
A basketball of mass 0.570 kg is dropped from rest from a height of 1.25 m. It rebounds to a height of 0.734 m. (a) How much mechanical energy was lost during the collision with the floor?
If the starting temp is 65OF and the coefficient of linear expansion is 0.00000992 in/in/OF, what temperature range would be needed to heat the collar and cool the pin?
What will be the charge on the capacitor a long time after the switch is moved to position 2. (b) after the switch has been in position 2 for 2.0 ms (millisecond).
The ice cap at the north pole may be 1000 m think, with a density of 920 kg/m^3. Find the pressure at the bottom and the corresponding melting temperature.
Determine the expected rating lives in hours of a 35 mm bore (02 and 03 series) straight cylindrical bearings operating at 2400 rpm.
The outer ring rotates, and the bearing carries a combined steady load of 5kN radially and 1.5KN axially at 1000 rpm. Calculate the median life in hours.
At the nozzle exit the pressure is 14.7lbf/in2 and the velocity is 4055ft/s. Determine the rate of entropy production in Btu/R per lb of steam flowing.
A turbine produces 2 MW of power while accepting steam at 3 MPa and 400 C and rejecting steam at 50 kPa and 100C.
Assuming that both the turbine and the pump are isentropic, find the thermal efficency of the cycle. (consider water enters the pump as saturated liquid).
Find the temperature of the combustion products of butane when burned in an adiabatic steady flow combustor at 1atm with 40 percent excess air preheated to 200c.
Calculate the fraction of the water that condenses and the rate at which heat must be removed to deliver 1000 cubic feet per minute of humid air at the final condition.
Calculate the maximum mass flow rate at the inlet condition that this compressor can handle without violating the second law of thermodynamics.
Helium at 810 R, 45 Ibf/in^2, and a velovity of 10 ft/s enters an insulated nozzle operating at steady state and exits at 690 R, 25 Ibf/in^2.
Air within a piston-cylinder assembly initially at 12bar, 327 degree celcius undergoes an isentropic expansion to 1.4bar. modeling air as an ideal, determine the specific work in KJ/Kg.
Ateam at 5 bar, 320 C enters a steady state turbine with a volumetric flow rate of 0.65m^3/s determine the rate of entropy production (deltaS), in KW/K.
Find the free-fall velocity of an 8.5-in-diameter sphere (bowling ball) weighing 16 lb falling through the following fluids under the action of gravity.
Develop an expression for vmax, average velocity, flow rate (Q) and shear stress at the wall (For flow rate calculations, assume a width of the channel to be w. Therefore the cross sectional area of
Show the cycle on a T-s diagram with respect to the saturation lines and determine (a) the quality of the steam at the turbine exit, (b) the thermal efficiency of the cycle, and (c) the mass flow ra
Suddenly he leaps with a velocity of 4 m/s from and parallel to the platform. Determine the velocity of the platform immediately after the leap.
The mechanical effficiency of the system is 80%. What is the average power input in Watts necessary to accomplish this? Assume constant velocity.
An ideal carnot heat engine has an efficiency of 40%. If the high temperature is raised 15% what is the new efficiency keeping the same low temperature?