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PS: CH. 12
Definitions
Question | Answer |
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Transfer of energy to a body by the application of a force that causes the body to move in the direction of the force. | Work |
A quantity that measures the rate at which work is done or energy is transformed. | Power |
A quantity that measures how much a machine multiplies force or distance. | Mechanical advantage |
One of the six basic types of machines, which are the basis for all the other forms of machines. | Simple machine |
A machine made of more than one simple machine. | Compound machine |
The energy that an object has because of the position, shape, or condition of the object. | Potential energy |
The energy of a moving object due to the objects motion. | Kinetic energy |
The amount of work an object can do because of the objects kinetic and potential energies. | Mechanical energy |
A quantity, usually expressed as a percentage, that measures the ratio of useful work output to work input. | Efficiency |