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Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n
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Explain why electric current cannot exist if a current doesn't have a voltage source.
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Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not
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What is one effect of the sun's electromagnetic field?
- Large gas granules on the sun's surface
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