Computer hard drives are made of aluminum platters coated, Ask an Expert

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Computer hard drives are made of aluminum platters coated with a layer of magnetic material. Each tiny magnetic domain represents one bit of information (1 or 0).

A) How many such domains must a hard drive of 3 TB have (1 Byte = 8 bits)?

B) A typical drive has a round platter of 9.5 cm in diameter with a hole of 2.5 cm diameter at the center. Assuming the domain are squares, what is the length of their sides in such a drive?

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Category:- Physics
Reference No.:- M9894680

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