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A nozzle is designed assuming reversible adiabatic flow with an exit Mach number of 2.8 while flowing air with a stagnation pressure and temperature of 2 MPa and 150?C, respectively. The mass flow rate is 5 kg/s, and k may be assumed to be 1.40 and constant. Determine the exit pressure, temperature and area, and the throat area.
A sample of aggregates weighs 400 grams. After drying at 112oF, its weight was 398.5 grams and absorption is 10%. Determine the moisture content and the free moisture.
The background concentration of atmospheric lead is 0.1 ug/m^3. During a typical hot day in Leadville the mixing height is 500m and the average wind speed is 1.9m/s.
An engine cooling system initially contains 16 quarts of a mixture of water and antifreeze, which is 30 % antifreeze on a volume basis. if its desire to be removed and replaced with pure (100%) antifreeze?
Consider a man who has 20 kg of body fat when he goes on a hunger strike. Determine how long he can survive on his body fat alone.
Write a User Defined Function named SimpleCharacter that takes the character inputs either "Coffee" or "Tea" and returns the outputs High Octane for an input of "Coffee" and Low Octane for an input of "Tea".
The structure shown below is made of structural A-36 steel. The left post is a solid round steel member with a diameter of 6 inches. The right post is a square steel member which is 6 inches square. The horizontal member is a solid steel beam with..
Use appropriate kinematics equations (for the right ranges) for the new velocity and distance traveled. (Hint: when the impulse becomes a non-negative number set it to zero; then the acceleration becomes zero and the velocity does not change; so use ..
A montmorillonite clay has a liquid limit of 160, a plastic limit of 75 and a shrinkage limit of 10. Calculate the percentage of change in total volume with respect to its initial volume when a specimen of this clay is completely dried from a water c..
Some distance downstream, the velocity profile can be (very) roughly approximated by a region inside the wake with u = U/2 and an exterior region with u = 3U/2.
Calculate the flow rate of toluene into theblender (L/min) and the composition of the tankcontents (wt% benzene).
A cylinder/piston contains 100 L air at 110 kPa, 25?C. The air is compressed in a reversible polytropic process to a final state of 800 kPa, 500 K. Assume the heat transfer is with the ambient at 25?C and determine the polytropic exponent n and th..
The daily concentration in the air for a given city is normally distributed with a mean of 0.03ppm and c.o.v. of 40%. Assume statistical independence between the concentration for any two days. Suppose the criteria for clean air standard require that..
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