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Suppose that a one-sided 5.25-inch optical-disk cartridge has an a real density of 1 gigabit per square inch. Suppose that a magnetic tape has an

Suppose that a one-sided 5.25-inch optical-disk cartridge has an a real density of 1 gigabit per square inch. Suppose that a magnetic tape has an areal density of 20 megabits per square inch, and is 1/2 inch wide and 1800 feet long. Calculate an estimate of the storage capacities of these two kinds of storage cartridges. Suppose that an optical tape exists that has the same physical size as the tape, but the same storage density as the optical disk. What volume of data could the optical tape hold? What would be a marketable price for the optical tape if the magnetic tape cost $25?

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