Answer the following questions in the essay box below. • Did the different sized suspended balloons balance?
• If they did not, which balloon tipped the scale down?
• Did your results validate the hypothesis above?
Give an explanation for your results, including a discussion of how the data collected either validated, or
disproved the hypothesis.

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

In a system, when potential energy decreases, then entropy also decreases. true false

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)