The force that directly propels a motor scooter along a highway is that provided by the
o engine.
o fuel.
o
tires.
o
road.

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.