A proton travelling along the axis of a 2cm ring with a
A proton travelling along the axis of a 2cm ring with a charge density of 5nC/cm is 5 cm from the center of of the ring and travelling toward it. What speed must it have to cross the ring's plane?
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a proton travelling along the axis of a 2cm ring with a charge density of 5nccm is 5 cm from the center of of the ring
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