A block of metal of density 3000 kg/m3 is 2m high and stands on a square base of side 0.5 m. Calculate: 1.The area of the base of the block
2.The volume of the block
3.Mass of the block
4.Weight of the block
5.The pressure exerted by the block

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

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