"for general projectile motion, when the projectile is at the highest point of its trajectory"

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory