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WASSCE
An electron of mass 9.1 × 10-31 kg moves with a speed of 2.0 × 106 ms-1 round the nucleus of an atom in a circular path of radius 6.1 × 10-11m.
Use the information to answer this question.
Determine the angular speed of the electron.
A.
3.28 × 1016 rad s-1
B.
8.55 × 103 rad s-1
C.
9.11 × 1013 rad s-1
D.
5.22 × 1015 rad s-1
Answer: A
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