Determine the enthalpy of the air per unit mass of dry air
A room with 42 kg of dry air has 1 kg of water vapor. If the enthalpy of the water vapor at 31 deg Celcius is 3,406 kJ/kg, determine the enthalpy of the air per unit mass of dry air in kJ/kg dry air.
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In a premlinary test of the Microsort method of gender selection 14 couples were treated and 1.3 of them had baby girls. If we plan to use the normal approximation to the binomial distrubtion for finding the probability of exactly 13 girls assumin
A piston-cylinder device initially contains 0.07 m3 of nitrogen gas at 130 kPa and 120 oC. The nitrogen is now expanded polytropically to a state of 100 kPa and 100 oC.
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Assume ends of bar in 5-7 have been kept constanst at 100 degrees C for a long time. Then at some instant t=0 the temperature at x=L is suddenly changed to 0 degree C and kept there.
A major airline recently began encouraging reservation agents to nap during their breaks. The table below lists the number of complaints received about each of a sample of 10 reservation agents during the 6 months before naps were encouraged and d
It is essential in the manufacture of machinery to utilize parts that conform to specification. In the past, diameters of the ball-bearings produced by a certain manufacturer had a variance of 0.00156.
A manufacturer of paper products wants to compare the variation in daily production levels at two paper mills. Independent random samples of days are selected from each mill and the production levels (in units) recorded.
A Boeing 747 "Jumbo Jet" has a length of 61.3 m. The runway on which the plane lands intersects another runway. The width of the intersection is 27.0 m. The plane decelerates through the intersection at a rate of 5.77 m/s2 and clears it with a fin
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