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The main shaft of a particular machine is to continuously transmit 25.0 ft-lbs of torque. Determine the safety factor against fatigue failure for the specified life.
Calculate the initial stress for each assembly. Which of the two assembly configurations (a=Left bar short, b=Right bar short) would you recommend?
Determine the horizontal distance traveled by the woman with respect to the ground when she reaches the bottom of the slide.
Calculate the air temperature when the pressure reaches 5 bar, and when the liquid has been drained completely.
The beam carries a uniform load of 6.5kN/m along the entire length and, in the same direction, a concentrated force of 4kN at the free end. Determine the max bending stress.
An air plane with constant altitude and velocity is being detected by a radar. The line of ground, and the rate of change of θ, θ'. In terms of θ, θ', D, find the velocity of t
Determine the boundary work for each process and the net work of the cycle. Sketch the processes and states on both P-v and T-v diagrams.
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.