Loading 100 application libraries requires one disk access each. Seek time is 10 ms and rotation speed 6000 rpm. Locations are random; ignore data-transfer time. Find total loading time.
6000 rpm is 100 rotations/s, giving ten ms per rotation and five ms mean rotational latency. One access averages 10+5=15 ms. A hundred accesses take 1500 ms=1.50 s, B.
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