tessabear123 tessabear123

21-02-2017
Chemistry

Answered

Which of the following is a compound machine?

a screw being screwed into a piece of wood

a can opener

a crowbar

a wheel and axle

Verified Answer :

taskmasters taskmasters

07-03-2017

A compound machine is that which is composed of two or more simple machines. Simple machines come in 6 basic types: (1) wheel and axle, (2) inclined plane, (3) wedge, (4) pulley, (5) screw, and (6) lever. Among the choices given above, the compound machine is the can opener for it is a combination of a wedge and a lever.

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