Dimas reads that it takes 270 n to lift a firefighter’s equipment. if a firefighter does 5400 j of work carrying the equipment up a staircase, how high does the firefighter climb? (work: w = fd)

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

The slope of a velocity time graph over any interval of time gives the during that interval

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.