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a boy capable of swimming 2.1m/a in still water is swimming in a river with a 1.8 m/a current. At what angle must he swim in order to end up directly opposite his starting point?
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Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules
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Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions
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a boy capable of swimming 2.1m/a in still water is swimming in a river with a 1.8 m/a current. At wh...
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