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Problem 4 (practice): A mad scientist considers creating a roller coaster which would use a uniform
electric field to accelerate the roller coaster cars at the start of the ride. One coaster car has a mass of
250 kg, and the scientist manages to place 0.003 C of charge on it. How strong of an electric field would
they need in order to get the coaster to go from rest to a speed of 17 m/s within a distance of 20
meters?

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