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A piston-cylinder device contains 4.53 kg of refrigerant-134a at 1200 kPa and 60 °C. Determine the amount of heat loss and show the process on a T-v diagram with respect to saturation lines.
Expressing variation of pressure with depth z as dP= density * gravity * dz determine the density and pressure at a depth of 2500m. Disregard the effect of temperature.
Determine the maximum diameter of a steel ball that would float on water at 20oC. What would be your answer for an aluminum ball?
Determine (a) the final pressure, (b) the change in the volume of the cylinder, and (c) the change in the enthalpy of the refrigerant-134a.
If this flowing blood were then to enter a region of stenosis where the diameter of the aorta was only .5 cm, what wold the approximate pressure in this narrowed region be?
Determine the velocity of water with respect to the blade at the point where cavitation occurs, assuming that cavitation occurs when the local pressure falls to the vapour pressure.
A point charge causes an electric flux of -750 Nm/C to pass through a spherical Gaussian surface of 10.0 cm radius cuntered on a charge.
A water pump increases water pressure from 10 psia to 50 psi. determine the power input required in hp to pump 1.2 ft^3/s of water. Does water temp in the inlet havy any effect on the required flow
The golf ball is hit at A with speed of V=40m/s and directed at an angle of 30 degrees with the horizontal. Determine the distance d where the ball strikes the slope at B.
The rate constant has a value of k =0.75 m3/mol-h at 400 K. Assume ideal gases. (a) Calculate the time required to achieve 60% conversion of A in a constant pressure batch reactor.
The motion of a particle is defined by the relation x=(6t^2)-8+40cos((pi)t), where X and t are expressed in inches and seconds, respectively. Determine the position, the velocity, and the accelerat
Determine the radius of the crank R and the speed n of a slider crank mechanism, used in a shaker table. It is required that the average speed of the table is 5 m/s.
The constant pressure specific heat of vapor is 2190 J/kg*C, determine the heat transfer coefficient as a result of convection between the outer pipe surface and the surrounding air.
Determine the net work of the cycle in kJ and the heat transfer for process 2-3 in kJ. Is this a power cycle or a refrigeration cycle? Explain.
A 230 V shunt motor, having an armature resistance of 0.05 ohms. A while running light at 1120 rpm. Determine the motor efficiency when the line current at a given load is 46 A.
If the room air temperature needs to be maintained at a constant 21 C how many window air conditioning units are required.
For each set of temperature readings, calculate the sample mean, the range and the sample standard deviation.
Can this process occur adiabatically? if yes, determine the work per unit mass of air, in Btu/lb, for an adiabatic process between these states. If no, determine the direction of the heat transfer.
At a ceratin instant the temperature distribution in the cylinder is T(r)= a+br2, where a and b are constants. Obtain expressions for the heat transfer rate at ro and the fluid temperature.
What weight (lbs/gal) drilling mud would be required to balance the expected formation pressure at this depth?
The tank contains water to a depth of 5ft plus a depth of 2.5ft of oil on top of the water. The SG of the oil is .82. Determine the magnitude and location of the resultant force on one end of the ta
The depth on the right hand side is 20ft. The gate is 8 ft tall and hinged at the top. In order to keep the gate closed, determine the external moment that must be imposed at the hinge.
The weight of the disk is 20 lbs. A person dives down to remove the disk. How much verticle force must the diver exert to lift the disk from the drain?
What is engineering strain, modulus of elasticity. What is the yield strength at .2% (or .002) strain offset, and plot engineering stress-strain curve.
An aluminum alloy specimen of .562" diameter and 2"gauge length was subjected to loads. What is engineering stress?