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An electron ejected at a high rate of speed from a solar flare impacts the earth's magnetic field and spirals down toward the North Geographic Pole. A) What would be the magnitude of the local magnetic field required to cause the electron to emit electromagnetic radiation at a radio frequency of 89.5Mhz? B) How fast would this electron have to be moving in order for it to move in a circular orbit of radius 1 mm?
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Transcribed Image Text:An electron ejected at a high rate of speed from a solar flare impacts the earth's magnetic field and spirals down toward the North Geographic Pole. A) What would be the magnitude of the local magnetic field required to cause the electron to emit electromagnetic radiation at a radio frequency of 89.5Mhz? B) How fast would this electron have to be moving in order for it to move in a circular orbit of radius 1 mm?
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Step 1: frequency of em radiation
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Step 2: magnetic force provide centripetal force.
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Step 3: part b
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