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Question1

Three point charges are in order on a line. Charge 3 = +5.00 nC and is at the origin. Charge 2 = -2.50 nC and is at = 4.50cm. Charge 1 is at = 1.00 cm. What is sign and magnitude of charge 1 if the total force on charge 3 is zero?

Question2

A 250 block hangs from a spring with spring constant 14. At the block are 13 below the equilibrium point and moving upward with a speed of 113. What is the block's oscillations frequency? What is the block's distance from equilibrium when the speed is 30? What is block's position at?

Question3

An ocean liner leaves New York City and travels 50.0° north of east for 203 km. How far east and how far north has it left? In other words, what are the magnitudes of the components of the ship's displacement vector in the next directions?

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