Calculate change in entropy per kilogram as air is heated
Calculate the change in entropy per kilogram as air is heated from 300 to 600K while pressure drops from 400 to 300kPa assume: a) constant specific heat; b) variable specific heat.
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A health researcher read that a 200-pound male can burn an average of 524 calories per hour playing tennis. 37 males were randomly selected and the mean number of calories burned per hour playing squash was 534.8 with a standard deviation of 45.9
Two failures were recorded at the end of the 200 operating hours. Determine a 90 percent, two-sided confidence interval for R(200). Determine a 90 percent lower-bound confidence interval for R(200).
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 4.16 x 10-6 W/m2 at a distance of 130 m from the explosion. Find the distance (in m) from the source at which
A solution of acetic acid is prepared in water by adding 11.1 g of sodium acetate to a volumetric flask and bringing the volume to 1.0 L with water. The final pH is measured to be 5.25. What are the concentrations of acetate and acetic acid in so
A previous analysis of paper boxes showed that the standard deviation of their lengths is 15 millimeters. A packer wishes to find the 99% confidence interval for the average length of a box.
(a) showing all of your work and using unity conversion ratios, calculate the work done by the boom on the fireman in units of Btu. (b) if the useful power supplied by the boom to lift the fireman is 3.50 hp, estimate how long it takes to lift the
If 69.5kJ of heat is applied to a 1012g block of metal, the temperature of the metal increases by 11.4 degrees celcius. Calculate the specific heat capacity of the metal in J/g degrees celcius.
If the mass per second of oxygen diffusing through a trachea is 1.7 multiplied by 10-12 kg/s, find the oxygen concentration at the interior end of the tube.
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