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Using the electric field described in the alpha cannon simulation, suppose that an alpha particle is fired upward from a height y = 0 m, with horizontal and vertical velocity components vx = 15.0 m/s and vy = 5.00 m/s.

(a) How much time passes before the particle returns back down to the height y = 0 m?

(b) What is the horizontal distance traveled by the particle before it returns to the height y = 0 m?

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