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2. A 10 kg ball is rolled down a rail from a height of 20 m. What is the velocity at the bottom of the rail? Ignore friction.
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In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
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Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.
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2. A 10 kg ball is rolled down a rail from a height of 20 m. What is the velocity at the bottom of t...
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