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What do you need to do before you can make a hypothesis?
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If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
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An electron in an x-ray machine is accelerated through a potential difference of 1.00 Γ 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?
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The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?
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What do you need to do before you can make a hypothesis?...
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