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Air enters a converging-diverging nozzle at 0.5 MPa with a negligible velocity. Assuming the flow to be isentropic, determine the back pressure that will result in an exit Mach number of 1.8.
The probability density function, f(t), of the time in hours between storms during the summer in Miami is estimated as f(t) = .014e^(-.014t) if x > 0, f(t) = 0 if x is less than or equal to 0 where t is the time interval between storms in hours.
A concrete cylinder of height 8 inches and diameter of 4 inches was tested in the lab. The maximum compressive force was found to be 150,000 lbs and a tensile force of 25000 lbs.
Reciprocal leveling gives the following readings in feet from a setup near A: on A, 2.071; on B, 8.254, 8.259 and 8.257. At the setup near B: on B, 9.112; on A, 2.926, 2.930 and 2.927.
Part of the moisture in the air that condenses during the process is also removed at 15°C. Determine the rates of heat and moisture removal from the air.
A firm is deciding wheter to buy or rent equipment. How many days would they need to use the equipment each year to justify purchasing the equipment? To purchase equipmet/ Buy at $60,000
Suppose the goal is to cool a room 6 m × 10 m × 2.5 m. Outdoor air is at 30°C, and it has been determined that 10 air changes per hour supplied to the room at 10°C could provide adequate cooling.
The behaviour of structural materials using comparative statement when they are formed into structural member
Determine the IRR of building the corrosion-resistant tower. (Hint: Calculate interest rates from 7% to 11% using formulae provided in tables).
Some organisms live in shallow ponds, where much of the water will evaporate during the warm, sunny, summer months. How will the concentration of solute change in the water druing this time
Beam is fixed at one end, spans 21' then goes over a roller support then 6' continues to hang over. there is a point load halfway betwen the supports (10.5') and another at the far end.
when their spacing is h, what is the radial component of convective acceleration at the section just inside the edge of the disk (section A) in terms of D, V, and h. assume uniform velocity distribution across the section.
A 200-MW power plant generates electricity with an efficiency of 40%, with 87% of this waste heat removed via cooling water. The average flow in the river to which this cooling water will be discharged is 45 m^3/s, and the plant wishes to discharge i..
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