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An 0.050 m long wire carrying current of 30 A is placed in a uniform magnetic field, B = 0.80 T, such that the wire is oriented so it's length runs perpendicular to the field.  Find the magnitude...

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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