The worldwide leading source of electrical power is:

Air flows upward in the wick of a lantern because of the liquid property called

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.

Work = force × a. work b. energy c. distance d. momentum