Two rooms are separated by a wall that is wood panel, r= 0.93 (usual units) on one side, withfiberglass insulation r = 13.0 between the walls and wall board r = 0.46 on the other. one roomis air conditioned at 74 deg. f and the room is not air conditioned at 92 deg. f. film coefficientsare r = 0.68 on both walls. what is the heat transfer rate from the warm room to the cool room? neglect the heat transfer reduction by the wall studs.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Heat transfer by is the fastest mode of heat transfer that requires no intervening medium. a)-conduction b)-convection c)-radiation d)-conduction and convection

An electrical kettle is made out of stainless steel,weighs two pounds (when empty) with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling.