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A particle with a charge of +/-q= C enters a region of magnetic field as shown here, with a speed of v= m/s.

The B-field has a strength of B= Tesla. When the particle enters the B-field region, it is seen to sweep out a semi-circle, and hit the edge of the device a distance x= cm to the right of where it entered.

  1. Is the charge positive or negative?
  2. What is the mass of the charge?

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