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An electric field of 1.64 kV/m and a magnetic field of 0.495 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed?
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Question: A researcher observes hydrogen emitting photons of energy 1.13eV . What are the quantum numbers of the two states involved in the transition that emits these photons? Express your answers as integers separated ...
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