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Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's
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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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Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
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The statement "matter can be neither created nor destroyed by chemical means, but it can be changed...
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