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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 exit flow area (cm2).
At one point in the duct, 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
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 brakesand coasts down the grade with an acceleration in feet per second squared given by a=3.22?0.004v2, where v is the velocity in feet per second. Determine the velocity vB at the bottom B of
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.
At 60oC the surface of water is .0662N/m and that of mercury yis .47N/m. Determine the capillary height changes in these two fluids when they are in contact with air in glass tube of diameter .55mm.
12 lbm of carbon (C) reacts with 24 lbm of oxygen (O2) to form 22 lbm of carbon dioxide (CO2) plus an unknown amount of carbon monoxide (CO).
A person is trying to fill a 10.0 gallon bucket by hand with a dipper. One dipper of water is added each second, and the dipper holds 1.0 lbm of water. How long does it take for the person to fill t
Pneumatic nail gun uses .02 ft3 of air, at least 100 psia, and 1 btu of energy per nail, tank used must supply enough air to fire 500 nails.
Pneumatic nail driver uses .02 ft3 of air at 100 psia and 1 btu of energy per nail, must drive 500 nails with a tank no larger than 500 psia, temperature at 85 def F. What is tanks maximum pressure
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?
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 system is extremely clean and quiet, and 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
For the forgoing conditions and a fin unit width, calculate the fin heat rate, efficiency, and effectiveness. Compare the foregoing results with those for a fin fabricated from pure copper (k= 400w/m*
A stainless steel tube (k= 14 w/m*k) used to transport a chilled pharmaceutical, has an inner diameter of 36 mm. What is the heat transfer rate per unit of tube length?
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
If this bullet was fired into 1 lbm of water at room temperature and all of the kinetic energy was converted into increasing the temperature of the water, find the water temperature increase in degr
Assume constant specific heat ideal gas properties evaluated at 400 K. Find T2 in degrees K and heat transfer Q and the work W for this process in kJ.
Steam at T1=600 degrees C, P1=15 MPa enters a reversible and adiabatic turbine at a flow rate of 300 kg/s. The steam exits at a temperature of T2=20 degrees.
If the work output of the engine 1 is twice more than that of engine 2, determine a. the intermediate temperature b. the heat rejected to the cold sink c. the efficiency of each heat engine.
A heat-engine of 32% thermal efficiency is used to drive a refrigerator having coefficient of performance of 5. Determine the heat input into the engine for each MJ removed from the refrigerated spa
Cruising at 20.1 m/s (45 mph), the gage reads 14 inches of Hg (Mercury) vacuum. If the local atmospheric pressure is 99.5 kPa, what is the absolute intake manifold pressure in kPa. Show all your ste
A steel shaft 120 mm in diameter is supported in flexible bearings at its ends. Two pulleys, each 500 mm in diameter, are keyed to the shaft.
Does can the forklifts lift it up? Explain your answer with the positioning of the forklift. Can it both lift up in the middle of the shaft or does it both need to be spread evenly?