Determining the focal length of the glasses
A farsighted person has a nearpoint of 50 cm from her eyes. She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Determine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes.
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Show the resulting schedule for the shortest-job-first (preemptive) and the round robinalgorithms. Assume a time slice of 4 units for RR. What is the completiontime of each process under each algorithm?
Suppose that a 1-Megabyte message is sent over a serial link using TCP over IP over PPP. If the speed of the line is 56 kbps and the maximum PPP payload is 500 bytes, how long does it take to send the message?
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It is sometimes desirable to be able to handle numbers of arbitrary size, without having to consider the limit of the machine representation or to rely on a utility library.
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