Please help with Physics... 1. A to B or B to A
2. a. increase or decrease
b. increase or decrease
c. increase or decrease
3. a, b, and c

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.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Which radioisotope is used in dating geological formations?