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A ship may exert an estimated pull of 8000 lb on its hawser (a heavy rope), which is wrapped around a mooring post on the dock. Determine the number of turns required of the hawser around the post so that the pull at the free end will not exceed 40 lb. Assume a coefficient of static friction of 0.35.
a rigid tank is connected by a valve to a supply line where refrigerant at 1.4 mpa and 100 degrees celsius flows
Calculate the minimum power required to convert 1 mole/sec of oxygen gas at 298 K and 1 atm to saturated liquid oxygen at 1 atm and 90.13 K (the atmospheric pressure boiling temperature) in a process in which heat is rejected to the environment at 29..
A 400 L rigid tank contains 5 kg of air at 25 C. Determine the reading on the pressure gauge if the atmospheric pressure is 97 kPa.
a thermocouple located at the center of a long circular duct with a 10cm diameter has a spherical bead of 2mm diameter.
air at 14.7 psia and 60 degf enters a heavy duty compressor with negligibly small inlet speed. the air is discharge at
how much energy in ft-lbf btu and kj is required to accelerate my 3400 pound car from rest to a velocity of 60 mph on a
an air-conditioned room requires 30 m3 min of air at 1.013 bar 20 degree c 52.5 rh. the steady flow conditioner takes
If there is uniform heat generation within the shells, obtain expressions for the steady-state, one-dimensional radial distributions of the temperature, heat flux, and heat rate. Contrast your results with those summarized in Appendix C.
Refrigerant 134a enters a 28-cm diameter pipe steadily at 200 kPa and 20C with a velocity of 5 m/s. The refrigerant gains heat as it flows through the pipe and leaves the pipe at 180 kPa and 40 C.
Air is contained in a piston-cylinder assembly, initially at 40 lbf/in^2 and 600R. The air expands in a polytropic process with n=k=1.4 until the volume is doubled. Modeling the air as an ideal gas with constant specific heats,
A constant pressure piston cylinder contains 0.2 kg water as saturated vapor at 400 kPa. It is now cooled so the water occupies half the original volume. Find the work in the process.
consider axial viscous flow in a long annular pipe driven by a pressure gradient with an inner solid rod of radius ri
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