An unusual lightning strike has a vertical portion with a current of −400 a downwards. the earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 μt. calculate, in n, the force exerted by the earth's magnetic field on the 25-m-long current.
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An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?
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Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?
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Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?
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An unusual lightning strike has a vertical portion with a current of −400 a downwards. the earth's m...
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