Physics Homework question 5

label Physics
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A doubly charged ion (charge 2e) with velocity 6.9 × 106 m/s moves in a circular path of diameter 60.0 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion? (e = 1.60 × 10-19 C)

Answer
6.7 × 10-27 kg
8.2 × 10-27 kg
11 × 10-27 kg
3.3 × 10-27 kg
4.5 × 10-27 kg
May 12th, 2015

m= BqR/v=2.226*10^-26 kg 


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May 12th, 2015

That is not an option

May 12th, 2015

we are told that it is a double charge.. so if we need not to consider this part of the question we divide the answer by 2 to give us..

11 × 10-27 kg

May 12th, 2015

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May 12th, 2015
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