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Please help! 4. An electron that is moving to the right experiences a magnetic field of 2.5 T directed upward. If the force on the

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4. An electron that is moving to the right experiences a magnetic field of 2.5 T directed upward. If the force on the electron is 2.4 x 10-12 N, what is the speed of the electron? 5. A proton that is moving north at 7.5 x 10' m/s encounters a uniform magnetic field of 4.5 T directed east. What are the magnitude and direction of the force acting on the proton

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