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A 43 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 17 m apart but connected by a rope of negligible mass. The girl exerts a horizontal 5.9 N force on the rope.
(a) What is the acceleration of the girl? m/s2
(b) What is the acceleration of the sled? m/s2
(c) How far from the girl's initial position do they meet? m
plan a free-body diagram for the charge.
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Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
An electron moving horizontally at 3.15 x 106 m/s enters a vertical magnetic field, Find the magnitude of the magnetic field in tesla (T)
An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. Find the magnitudes of the net force acting on the electron
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