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A room is cooled by circulating chilled water through a heat exchanger located in a room. The air is circulated through the heat exchanger by a 0.25-hp (shaft output) fan. Typical efficiency of small electric motors driving 0.25-hp equipment is 54 percent. Determine the rate of heat supply by the fan-motor assembly to the room.
You are buying a home for $360000. If you make a down payment of $60000 ad take out a mortgage on the rest at 8.5% compounded monthly, what will be your monthly payment if the mortgage is to be paid off in 15 years?
Derive the material index for a torsion bar with a solid circular section. The length L and the stiffness S* are specified, and the torsion bar is to be as light as possible. Follow the steps used in the text for the beam, but replace the bending sti..
consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of
the snowmobile is traveling at 10m/s when it leaves the embankment at A.determine the speed at which it strikes the ground at B and its maximum acceleration along the trajectory AB.
a small steam power plant has a boiler exit of 3 mpa 400degc while it maintains 50 kpa in the condenser. all the
a nozzle is a device that is used to increase the velocity of a flowing fluid. it does this by reducing the pressure.
Saturated liquid steam at 2 MPa steadily enters a valve where it is throttled to 0.3 MPa. The inlet and outlet diameter is 1 cm. The flow rate is 0.012 kg/s. Determine the outlet density [kg/m3] of the steam. Also show that it is reasonable to neglec..
using the fact that the tension in the rope must remain constant in all sections of the rope calculate the total force
u.s. energy use was approximately 100 quads quadrillions btu in 2008. about 85 of this energy was supplied by burning
carbon dioxide at 20 degrees celsius and a pressure of 550 kpa flows through a pipe at 0.04 ns what would be the
A mass weighs 15 Newtons on the moon, where the acceleration of gravity is 1.67 m/s^2. Determine the weight, in Newtons, on Mars where g= 4.23 m/s^2
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
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