A 1200 kg car speeds up from 30 m/s to 45 m/s. What is the work done on the car?

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.

This is the substance(s) formed in a chemical reaction.

Which notation is used to represent an alpha particle? a. b. c. d.