The type of coal that has the highest carbon content is

What is the length x of the side of the triangle below? (hint: use the cosine function)

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.

How do you tell if someone actually cares about you? and just say they do?