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The experimental data for the process indicate that PV1.45 = constant. What is the work performed by the expanding gas?
Determine the minimum initial velocity at which the ball must be kicked in order for it to just cross over the 3m high fence and determine the corresponding angle theta at which the ball must be kic
A 5-ft3 tank contains 0.6-gravity natural gas at 1500 psia and 100oF. 200 SCF of gas is released from the tank. This causes the temperature to drop to 60oF. What is the final pressure of the tank?
Find the percent decrease in force necessary to move the piston when the SAE 10W oil between the piston and cylinder warms up from 0 degrees C to 100 degrees C.
Assume that the puck is hit with an initial speed of 8 m/s. How long will it take the puck to stop? What distance will the puck have travelled before stopping?
If the piston is decelerating at a rate of 3.22 ft/s, determine the viscosity of the oil film between the piston and cylinder. Givens: piston diameter = 8 in, piston height = 6 in.
Find (a) the approximate location of the laminar turbulent transition; (b) the overall h- for a 2 m chord; (c) h at the trailing edge for a 2 m chord; (d) delta and h at the beginning of the transit
The mass flow rate at the inlet is measured and is 1.4 kg/s. Neglect heat transfer and potential energy changes. Find: a) the mass flow rate at the exit (kg/s), b) the exit velocity (m/s) and c) the
The pressure and temperature are p=1800lb/ft^2 and T=500 degrees R, respectively. At a second point, the temperature is 400 degrees R. Calculate the pressure and density at this second point.
The pressure and temperature ratios across a given portion of a shock wave in air. Calculate the change in entropy in units of (a) (ft . lb)/(slug . degree R) and (b) J/(kg . K).
In the reservoir of a supersonic wind tunnel, the pressure and temperature of air are 10 atm and 320 K, respectively. Calculate the density, the number density, and the mole-mass ratio.
The relationship between pressure and volume during the process is pV = constant. Sketch the process on a p-V diagram and determine the work, in kJ.
Assume you can measure the weight of the king's crown in air, Wa, and the weight in water, Ww. Express the specific gravity of the crown as a function of these measured values.
Evaluate the work transfer (in kJ) if (a) n = 0, (b) n = 1, (c) n = 1.4, and (d) plot a p-V diagram for each processes and show the work by shaded areas.
Determine the capillary height changes in these two fluids when they are in contact with air in glass tube of diameter .55mm. Contact angles are 0 degrees for water and 130 degrees for mercury.
Determine the amount of carbon monoxide formed in lbm, and find the chemical equation for this reaction on a lbmole basis.
The water is brought to the vapor state at 300oC and 1,500kPa, where its internal energy is 2, 784.4 kJ kg^-1 and it's specific volume is 169.7 cm^3 g^-1. Calculate deltaU and deltaH for the process
Pneumatic nail gun uses .02 ft3 of air, at least 100 psia, and 1 btu of energy per nail. What is the max pressure and volume of the tank?
The two tanks are allowed to reach equilibrium, and the final pressure is measured to be 400 psia and temperature is 60oF. What is the volume of the second tank?
Calculate h at the trailing edge (a) if the fluid is water; (b) if the fluid is glycerin (h = 34G W/m2K). (c) Compare the drag forces in the two cases. [There is 23.4 times as much drag in the glyce
Find (a) the approximate location of the laminar turbulent transition; (b) the overall h- for a 2 m chord; (c) h at the trailing edge for a 2 m chord.
The flow stays laminar until a noisy air compressor is turned on in the laboratory. Then it suddenly goes turbulent. Calculate the ratio of the turbulent h to the laminar h.
It radiates to a night sky whose temperature is -18 degree F, while a 50 degree F breeze blows over it at 1.5 ft/s. Will the water freeze or warm up?
What is the heat transfer rate per unit length if a 10 mm thich layer of calcium silicate insulation (k= 0.05 w/m*k) is applied to the outer surfac of the tube?
For these conditions, what is the force (in units of lbf and N) transmitted to the structure holding the diffuser? Provide both direction and magnitude of the force, and use a picture to help presen