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One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus
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A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy
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Two electrons in a helium atom are located at distances of 400 nm and 700 nm. Which electron has the...
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