An astronaut performs a simple experiment in the \"weightless\" environment of a

Question

An astronaut performs a simple experiment in the "weightless" environment of a space station, intended for television broadcast to elementary school classrooms around the world. By combing her hair, she is able to charge a flat comb so that, in the vicinity of the comb, there is an approximately uniform electric field of strength E = 900 N/C. She places the comb 4.00 cm away from a clump of small paper dots, inducing a non uniform distribution of charge in the clump so that one of the dots becomes charged and breaks away, accelerating toward the comb. If the paper dot has a mass of 2.95

Explanation / Answer

Force = q • E = m • a (3.50 ×10^-6) • (900) = (2.95 ×10^-4) • a ??????a = 10.678 m/sec² ?V² - (Vi)² = 2 • a • d ... Vi = initial velocity = 0 V² - (0)² = 2 • (10.678) • (0.04) ... 4 cm = 0.04 m V = 0.924 m/sec ... final velocity at impact

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