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At what pressure in the test section must the tunnel operate to have the same Mach and Reynold's numbers? The speed of sound in the air at 25 degrees C is 345 m/s.
What is the amount of recycle gas (in mol) per 100 kg of P if the concentration of water in the gas stream entering the dryer is 5.20% Draw and label a flow chart and perform degree of freedom analy
Methane at 1 MPa, 300 K is throttled through a valve to 100 KPa. Assume no change in kinetic energy and ideal gas behavior. What is the specific entropy generation?
Suppose that water at room temperature of 27°C is put into an ideal refrigerator that maintains an inside temperature of -2°C. What is the cost of making 112 lb (50.4 kg) of ice if electric
A spherical bowling ball of mass m = 7 kg and radius r = 0.2m is projected along a horizontal bowling alley surface (μ = 0.1) with a linear velocity va= 2.8 m/s but with no angular velocity (&ome
Find a vector that models the resulting direction and speed of the airplane. Find the ground speed and bearing of the airplane in the wind. Show all steps.
A man dives horizontally and to the right off the end of a 220 kg boat. The boat is initially at rest and the man weighs 110 kg. If the man dives so that his relative horizontal velocity with respec
A pile weighing 2000 lb is driven vertically into the ground by a pile-driver hammer weighing 6000 lb which falls freely from rest through a height of 16 ft to the head of the pile.
What is the temperature at the exit of the valve in oC? What is the internal energy (kJ/kg) of the refrigerant at the exit of the valve?
The buoyancy force acting on a 500 kg balloon is Fb=6KN and the air resistance is Fd=(100v) N where v is in m/s. Determine the terminal velocity of the balloon if it starts from rest.
Determine the minimum coefficient of static friction between the uniform 50 kg spool and the wall so that the spool does not slip.
A magnesium-lead alloy of mass 5.5 kg consists of a solid phase that has a composition that is just slightly below the solubility limit at 200°C (390°F). (a) What mass of lead is in the allo
A 85.2-kg vertically-falling skydiver experiences an upward force of air resistance of 1340 N. Determine the acceleration (in m/s/s) of the skydiver. (Enter a - value if the direction is downward.)
What is the shape of the graph between velocity and mass of the vehicle ifother factors remain same? What is the shape of the graph between displacement and power?
A copper-nickel alloy of composition 60 wt% Ni-40 wt% Cu is slowly heated from a temperature of 1000°C (2370°F). What is the chemical composition of this liquid phase?
The compressor inlet conditions are 140 kPa and -10.0 oC. If the exit conditions are 900 kPa and 70.0oC, determine the power input to the compressor in kW.
A baggage handler drops your 9.40 suitcase onto a conveyor belt running at 2.30 . The materials are such that μs = 0.530 and μk = 0.190. How far is your suitcase dragged before it is riding sm
Would each process require the same amount of work? If not, which would require more work and why? Would each process require the same amount of force?
A garden hoses with an inside diameter of 5/8 inch is supplying water at a rate of 3 gallons per minute (1 ft3 = 7.481 gal). What is the Reynolds number of the flow? This is all the information give
The wall system is 6m wide by 2.8m high. What is the rate of heat transfer through the wall and temperature drops accross each layer, and surface-ambient air?
Two air flows are combined to a single flow. Flow one is 1 m3/s at 293 K and the other is 2 m3/s at 473K both at 1 bar. They mix without any heat transfer to produce an exit flow same as the flow on
Write a computer program that plots the contour lines of (sigma(1), sigma(2)) on a 2d rectangular beam. Sigma represents the shear stress.
Determine the tower height required to remove 90% of CO2 from air by water in a dilute solution in a packed tower with a 1.5 in metal Pall rings at T=303 k and P=101.32 kPa.
A Carnot refrigerator is maintaining food stuffs in a refrigerated area at 2oC by rejecting heat to the atmosphere at 27oC. It is desired to maintain some frozen foods at -17oC with the same sink te
For thixotropic fluid, (mu) decreases wirh time . assume (mu) depends on time as mu(t) = 10e^(3t) + 2 plot the velocity at mid- channel from t=0 to t=5. what effect of (mu) on wall shear stress?