Question: A small magnetic sample is in the form of a disk having a radius of 1.4 cm, a thickness of 0.3 cm, and a uniform

A small magnetic sample is in the form of a disk having a radius of 1.4 cm, a thickness of 0.3 cm, and a uniform magnetization along its axis throughout its volume. The magnetic moment of the sample is 1.5 × 10–2 A • m2.

(a) What is the magnetization M of the sample?

(b) If this magnetization is due to the alignment of N electrons each with a magnetic moment of 1 μB, what is N?

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