Which statement describes a compund machine? 1. It has movement in only one direction

2. It can only be acted on by one force

3. It makes more work difficult

4. It made up more than one simple machine

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.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

What are the similarities & differences between a thermistor and a light dependent resistor in physics?