Write a scientific explanation about weather or not a single cell constitutes a system. (CER)

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.

What are the three ways that an object can accelerate

=force × distance a. work b. velocity c. pressure d. momentum