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A 630,000 gallon tank sits empty outside where the temperature is 20 degrees F. The tank is then immediately filled with 35 degree F fresh water. There is a heat-pump that takes water from one side of the tank heats it to 160 degrees F and discharges it into the other side of the tank at a rate of 210 gallons per minute. This pump is turned on as soon as the tank is filled. How long will it take for the water in the tank to reach 70 degrees F?
determine the average punching shear stress the circular shaft creates in the metal plate through section ac and bd.
an air standard brayton cycle has inlet conditions of 540 r and 14 .7 psia a compressor efficiencyof 85.86 and a
saturated r-134a vapor at 100of is condensed at constant pressure to a saturated liquid in a closed piston-cylinder
the required cross-sectional area of cables in a cable-stayed bridge can be estimated by keeping cable stress just at
the hull of a boat has a volume of 150 m3 and the total mass of the boat when empty is 8560 kg. determine how much load
a weight attached to a spring of stiffness 525nm has a viscous damping device. when the weight is displaced and
a 2 m3 tank contains nitrogen at room temperature 25degc with a gage pressure of 2 mpa. a barometer in the room shows
A rigid bar of mass m and length L is released from rest in the horizontal position. What is the rod's angular velocity when it has rotated through 90°?
a man is changing his tire at the top of a hill. he is rolling the spare at 4.83 fts when he loses control and the
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr. When the steam exits the boiler it's temperature is 1000°F and its pressure is 1400psi...
propane in a steel bottle of volume 0.1 m3 has a quality of 10 at a temperature of 15 c. use the generalized
A piston-cylinder device initially contains 50L of liquid water at 40 degrees C and 200kPa. Heat is transferred to the water at constant pressure until entire liquid is vaporized.
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