Which of the following quantities has the same unit of energy?

• force

• momentum

• power

• work

Which of the following describes the rock as it goes upward?

• kinetic energy and potential energy decrease.

• kinetic energy and potential energy increase.

• kinetic energy increases but potential energy decreases.

• kinetic energy decreases but potential energy increases.

How will you describe the total energy in the universe?

• It tends to increase

• It tends to decrease.

• It is always zero.

• It remains constant.

Which of the following devices converts heat energy into use mechanical energy?

• generator

• heat engine

• motor

• transformer.

At what point in its motion is the potential energy of the pendulum bob maximum?

• A

• B

• C

• D

Which of the following describes a heat engine?

• It completely coverts heat energy into work.

• It is eco-friendly.

• It follows the Law of Conservation of Energy.

• it produces electricity.

Entropy may decrease after a process.

• True

• False

Law of Conservation of Energy and the Second Law of Thermodynamics are the same.

• True

• False

Heat engine produces more heat waste than mechanical energy.

• True

• False

Heat moves from cold objects to hot objects.

• True

• False