23. Partway down a hill, a roller coaster car has kinetic energy of 15, 000 J. What is its potential energy at that point if the total mechanical energy is 40, 000 J? 40, 000 J 30, 000 J 25, 000 J O 55, 000 J

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Q: Practice question Air flows steadily at low speed through a horizontal nozzle (by definition a…

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