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1. If the x-component of the velocity vector is constant in a plane ?ow, what is true of the y-component of the velocity vector?
2. Calculate the density gradient in Example 5.1 if (a) forward differences were used and (b) if backward differences were used. What is the percent error for each, assuming the answer in Example 5.1 is correct.
6 kg of an ideal gas is in a volume of 1 m3 at 250degc. the gas undergoes a constant pressure change of state until the
carbon monoxide is initially in a 50 l tank at 210 kpa and 127c.a determine the mass of the gas in kilograms.b if 0.02
car a starts from rest at t0 and travels along a straight road with a constant acceleration of 6fts2 until it reachers
A heat pump operates at steady state maintains a house at 22 0C when the outside is -22 0C using 15 kW of power. The manufacturer claims that the power input required is 3.2 kW. Applying energy and entropy rate balances evaluate the claim.
a molten mixture of salt nano3-kno3 is used as the heat transfer fluid for application in a parabolic trough solar
An ideal vapor-compression refrigeration cycle uses r-134a as the working fluid is used to cool a brine solution to -5 C. This solution is pumped to various buildings for the purpose of air conditioning. The refrigerant evaporates at -10 C with a tot..
water flows in a circular pipe. at one section the diameter is 0.3 m the static pressure is 260 kpa gage the velocity
A power cycle operates between a reservoir at temperature TH and a lower-temperature reservoir at 280 K. At steady state, the cycle develops 40 kW of power while rejecting 1000 kJ/min of energy by heat transfer to the cold reservoir. Determine the mi..
A solar energy collector on a rooftop is 6x6 meters and mounted in a horizontal position. The incident solar energy flux is 630 W/m^2. If the surface of the collector is 65 C and surrounding air is stagnant at 10 C.
Refrigerant 22 enters an insulated compressor operating at steady state as saturated vapor at - 16 C with a mass flow rate of 1.5 kg/s. Refrigerant exits at 7 bar, 70 C. Changes in KE and PE from inlet to exit can be ignored. Determine: (a) the volum..
consider the steady operation of a refrigeration package for a shipping container on a train truck or ship. the package
(a) How many atoms are there per unit cell (atoms actually inside the unit cube)? (b) Make a sketch (as best you can) of the lattice characterized by the part (a) unit cell. Use dots to represent the atoms and include at least three parallel plancs o..
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