A differential thermocouple with sensors at the inlet and the exit of a pump indicates that the temperature of water rises 0.048°f as it flows through the pump at a rate of 1.5 ft3/s. if the shaft power input to the pump is 21.6 hp and the heat loss to the surrounding air is negligible, determine the mechanical efficiency of the pump.

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?