On mars the gravity is about 1/2 that of earth. An object that has a mass of 200 kg will have a weight of about how much

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.

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.