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An 80% efficient pump with a power input of 15 MW is pumping water from a lake to a nearby pool at a rate of 1.6 m3/s through a constant diameter pipe. The surface of the pool is 70 m above the surface of the lake. Determine the mechanical power used to overcome frictional effects in the piping.
that makes p1 and p2 both equal to atmospheric pressure. the flow rate in the tank and the tube are proportional to the
the density and associated percent crysallinity for two nylon 66 materials are shown as follows compute the desities of
a mass of 2.4 kg of air at 150 kpa absolute and 12 degrees celsius is contained in gas tight frictionless piston
consider x norm57 y norm57 and z norm19 and assume xy and z are independent.1 find and sketch the probability
lead experiences corrosion in an acid solution according to the following reaction pb 2h rightarrow pb2 h2 the rates
hot air at 800c is blown over a 2-m x 4-m flat surface at 300c. if the average convection heat transfer coefficient is
A metal is being cast into a cylinder which is 10 cm in diameter and 20 cm tall. The mold is bottom-gated (see class notes for geometry)
for other properties fixed in a rakine cycle raising the condenser temperature causes what changes in the work and heat
a hot dog can be considered to be a cylinder 12 cm long and 2 cm in diameter whose properties are rho 980 kgm3 cp 3.9
a mixing chamber receives 3kgmin ammonia as saturated liquid at -20 c from one line and ammonia at 40 c 300 kpa from
a horizontal cylinder is separated into two sections by an adiabatic frictionless piston. one section contains 0.2 m3
steam is compressed by a compressor from 120oc and 150 kpa to 200oc and 1.5 mpa. the work input is measured to be 485.4
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