Select the statements that correctly interpret the data in this heating curve.
the consistent temperature indicated by section 2 represents the flow of energy lost as the water freezes.
section 2 indicates that energy is being utilized to bring all molecules to the melting point.
section 3 indicates that the temperature of the boiling water is increasing
section 4 indicates that the temperature is stable until all molecules reach the boiling point.
the increasing temperature in section 5 indicates that molecular motion is increasing

Who was the first scientist to measure speed as distance over time?

Explain what happens at the saturation point when adding salt to water at room temperature.

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)