The work output of a machine divided by the work input is the ________________ of the machine.

The lowest possible temperature is ________________.

An inclined plane with one or two sloping sides forms a machine called a

A fixed, single pulley that is used to lift a block does which one of the following?

A place where molecules are far apart is a _______________________.

The rate at which work is done is calles __________________________.

Which one of the following in NOT an example of an electromagnetic wave?

A heat engine __________________.

A machine that changes only the direction of a force has a mechanical advantage of _________.

A slanted surface used to raise an object is a(n) ____________________________.

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