Physics - Energy
What is energy?
The capacityof one object or system to do work or cause a change on another.
What is the principle of the conservation of energy?
The energy of a closed system always remains constant; energy can never be created or destroyed, only transferred.
What form of energy is due to the motion of a mass?
Kinetic energy.
What form of energy is due to the position of a mass in a gravitational field?
Gravitational potential energy.
What form of energy is due to the bonds between atoms in a substance?
Chemical energy.
What form of energy is due to a reversible change in shape of an object?
Elastic potential energy.
What form of energy is due to the forces between protons and neutrons in an atom?
Nuclear energy.
What form of energy is due to the electromagnetic waves?
Radiant energy.
What form of energy is due to the mechanical wave motion of atoms?
Sound energy.
What form of energy is due to randomly distributed potential and kintetic energies of atoms within a system?
Thermal energy.
What effect does friction have on the energy of a moving object?
Transfers kinetic energy primarily to thermal energy.
What does the difference between gravitational potential energy and the kinetic energy tell you?
The work done against resistive forces.
What height should you use when calculating the change in gravitational potential energy?
What height should you use when calculating the change in gravitational potential energy?