Calculate the melting point of ice under a pressure of 50 bar. assume that the density of ice under these conditions is approximately 0.92 g cm−3 and that of liquid water is 1.00 g cm−3

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

In science and physics what is the standard unit of measure for speed?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)