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A vertical spring is 10.0 cm long when supporting a 20.0 kg mass, and it is 12.0 cm long when supporting a 32.0 kg mass. Assume the stretch is linear with the load.
A.) What is the length of spring with zero load?
B.) How much work would be done in stretching the spring from 10.0 cm to 15.0 cm?
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Nate the Skate was an avid physics student whose main non-physics interest in life was high-speed skateboarding. What were Nate\'s speeds immediately before and after the collision
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