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1. A cylinder/piston contains 0.1 lbm methane gas at 15 psia, 70 F. The gas is compressed reversibly to a pressure of 120 psia. Calculate the work required if the process is adiabatic.
2. Helium in a piston/cylinder at 70 F, 20 psia is brought to 720 R in a reversible polytropic process with exponent n = 1.25. You may assume that helium is an ideal gas with constant specific heat. Find the final pressure and both the specific heat transfer and the specific work.
Some types of precast floor, except:A. Precast half slab
the scale of a spring balance reading from 0 to 235 n has a length of 13.0 cm. a fish hanging from the bottom of the
The compressor of a refrigerator compressed saturated R-134a vapor at 5 F to 200 pisa. How much work (ft-lbf/lbm) does this require when the process is isentropic
A static thrust stand is to be designed for testing a specific jet engine. Knowing the following conditions for a typical test,
Weather records for a certain region indicate that there is a tendency for two hot summers to occur in a row. From the statistics for the region, the following information has been es tahlished
explain how you would determine the mole fraction of the gas dissolved in the liquid at the interface at a specified temperature
A mass of .525g of NaCl has been added to a cylinder containing water. The cylinder diameter is 1.5in and depth of water in 5inches. Determine the concentration of the sodium ion in solution, showing your ans in units of a) mg/L b) mass % and c) m..
Find the required depth y as a function of the length x in order for all sections to be equally effective in their resistance to bending
Determine the uniform grade needed, and calculate invert elevations at each 50-ft station.
A block of mass m is attached to two springs as shown. Knowing that in each case the block is pulled through a distance x from it's equilibrium postition and released, determine the maximum speed of the block in the subsequent motion.
Consider a mixture of several gases of identical masses.
If the effective stack height of the plant is 100 m, and the ground reflects the SO2 emission perfectly what is the SO2 concentration at a sampling point located 2 m above the ground in the town.
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