A system loses 650 J of potential energy. In the process, it does 750 J of work on the environment and the thermal energy increases by 200 J Find the change in kinetic energy ΔK.

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)