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Water is in a piston/cylinder maintaining constant P at 330 F, quality 90%, with a volume of 4 ft3. What is the elapsed time to vaporize all the liquid?
Helium gas expands from 20 psia, 600 R, and 9 ft3 to 15 psia in a polytropic process with n = 1.667. How much heat transfer is involved?
Prepare the income tax journal entry of the Keil Company at the end of 2010.
The current tax rate is 30% and no change in the tax rate has been enacted for future years. The company has positive, verifiable evidence of future taxable .
A 65-gal rigid tank contains methane gas at 900 R, 200 psia. It is now cooled down to 540 R. Assume an ideal gas and find the needed heat transfer.
What do you notice about the balance in the deferred taxes over the five years?
Water in a 6-ft3 closed, rigid tank is at 200 F, 90% quality. The tank is then cooled to 20 F. Calculate the heat transfer during the process.
A car with mass 3250 lbm is driven at 60 mi/h when the brakes are applied to quickly decrease its speed. Find the temperature increase in the brake assembly.
A copper block of volume 60 in.3 is heat treated at 900 F. Assuming no heat transfer with the surroundings, what is the final temperature?
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