A spreading of particles causing decreased density is called O sound energy
O Brownian motion
O compression
O rarefaction

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

Which is an example of an exothermic process?

Could we see a galaxy that is 20 billion light-years away?