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C. 8 45. The potential energ alon tentia...

C. 8 45. The potential energ alon tential energy of a particle of mass m free to move the x-axis is given by U = (1/2) kor? for x < 0 and 1-0 for x 20 (x denotes the x-coordinate of the particle od k is a positive constant). If the total mechanical energy of the particle is E, then its speed at x = -2E/k is b. 2E a. Zero m d. 2m i. Dia 8.238 have masses M

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