Pls help!
What is movement of energy from one system to another also known as?

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

What’s #16 asking me and how do i solve it?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?