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What is the magnetic field in air 0.05 m away from a long straight wire carrying current of 15A?       An air-core solenoid with 2000 loops is 0.60 m long and has a...

A)   A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. If the proton is fired at a speed...

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