PLEASE HELP!!!!!!!! A uniform magnetic field is directed into the page. Because

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PLEASE HELP!!!!!!!!

A uniform magnetic field is directed into the page. Because of the presence of a tenuous gas in the region, a charged particle moving in the plane of the page follows an anti-clockwise spiral of decreasing radius as shown. Give all possible correct answers (i.e., B, AC, BCD ). The magnitude of the momentum of the particle is decreasing. The magnetic force is doing non-zero work on the charge. The acceleration vector of the particle is constant. The charge is positive. The charge is speeding up.

Explanation / Answer

the possible correct ans are -c,d,e

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