3. Sara poured 830 mL of water into a large jar. She then added several slices of lemon with a total mass of 86 grams. The jar has a mass of 130 grams when
empty. What is the total mass of the filled jar? (1mL is = 1 gram of pure water)

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’s #16 asking and how do i solve it?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?