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A 0.150-kg cart is attached to an ideal spring with a force constant of (spring constant)...

A 0.150-kg cart is attached to an ideal spring with a force constant of (spring constant) of 3.58 N/m undergoes simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. At what distance from the equilibrium position are the kinetic energy and potential energy of the system the same?

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