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Akid pulls on a rope with 20 newtons of force. the block and tackle system pulls up a 160 newton box. what is the mechanical advantage of the pulley system
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Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle
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How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
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Akid pulls on a rope with 20 newtons of force. the block and tackle system pulls up a 160 newton box...
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