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A heat pump is absorbing heat from the cold outdoors at 5oC and supplying heat to a house at 25oC at a rate of 18,000 kJ/h. If the power consumed by the heat pump is 1.9 kW, the COP of the heat pump is?
water at 1mpa and 65oc enters a tube of a boiler which has a constant 160mm inside-diameter. the water leaves the tube
a first class lever in static equilibrium has a 50lb resistance force and a 15lb effort force. the levers effort force is located 4ft from the fulcrum. what is the actual mechanical advantage of the system?
argon is compressed in a polytropic process with n 1.2 from 120 kpa and 30ordmc to 1200 kpa in a piston-cylinder
determine the location Yc of the centroid C of the beam cross sectional area . then compute the moment of inertia of the area about the x axis.
consider the flow of air over a vertical flat plate at a low velocity u1 in ambient pressure p1. the plate surface
the power output of a steam turbine is 30 mw. determine the rate of steam flow in the turbine for saturated steam
a fully loaded boeing 777-200 jet transport aircraft weighs 325000 kg. the pilot brings the 2 engines to full takeoff
a rigid well-insulated tank with a volume of 3 fe contains air at p1 22 lbfin2 and t1 475 bullr. the air is stirred by
a new 600 mw power plant 0.35 efficiency uses an illinois basin coal. assume the fgd system removes enough sulfur so
a rigid tank contains 5lb of a two-phase liquid-vapor mixture of h2o initially at 26of with a quality of 0.6. heat
you have been assigned to investigate a traffic accident. the masses of car a and car b are 1400kg and 1000 kg
A 12 kN force is exerted on a rocker arm. The moment of inertia (I) of the crosssection with respect to the neutral-axis is 43.3x10-9 m4.
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