Monkey D. Luffy is sailing together with his crew, the “Straw Hat Pirates” in the West Philippine Sea. The wind is quite strong and is exerting a 400N force on their sailboat “Thousand Sunny” directed to the south. The waves are also exerting a force of 208N westward. If Thousand Sunny has a mass of 300 kg (including the crew and their luggages), what is the magnitude and direction of its acceleration?

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Q: What net external force is exerted on a 1000-kg artillery shell fired from a battleship if the shell…

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.