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A heat pump is to be used to heat a building during the winter. The building is to be maintained at 22.9oC at all times. The building is estimated to be losing heat at a rate of 118,572 kJ/h when the outside temperature drops to 4.2oC. Determine the minimum power required (kW) to drive the heat pump unit for this outside temperature.
A ball is thrown vertically up with a velocity of 91 ft/sec at the edge of a 190-ft cliff. Calculate (a) the height h to which the ball rises and (b) the total time t after release for the ball to reach the bottom of the cliff.
An airplane flies at 400 mph at 1600 ft altitude on a standard day. The plane climbs to 50,000 ft and flies at 725 mph. Calculate the Mach number of flight in both cases.
If we have |N|(en) + F - W = 0 Where The unit vector of N is give, F components unknown and W is only -3400 j. What is the first step to solve for an unknown.
What are effects of the annealing process on the density of these dislocations ? Can you give examples for materials?
Calculate the magnitude of the moment acting at the build-in end and specify the orientation of the moment vector relative to the principal centroidal axes of the section with the aid of a sketch and determine the stresses at each corner of the bu..
under proper conditions water hyacinths a floating plant will grow at such a rate that their dry biomass increase 5 per
in a crank or slotted lever quick mechanism the distance between the fixed centre is 150 mm and driving crank is 75 mm. determine the ration of the time taken of cutting & return strake .
assume that a seismically excited system is accurately modeled by a mass attached to the ground by a spring and a
write an appraisal of mathcad including a comparison with mathlab. describe another feature of mathcad, giving examples of how it can be used.
The rack structure will be built 2 ft above floor level, and the clearance between the rack structure and the ceiling of the building must be at least 18 in. Determine the dimensions (height, length, and width) of the rack structure.
a piston-cylinder arrangement initially contains water at p 300 psia and t 500of. the piston is moved to a final
the system shown starts from rest and each component moves with a constant acceleration. if the relative acceleration
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