Azzam is reviewing a paper he just wrote about kinetic friction for his physics class. On the third page, he realizes that every time he wrote "coefficient of friction," he should have written "coefficient of kinetic friction." He uses the Find and Replace tool and clicks on "Replace All" to fix the issue, but then when prints out the paper, he sees "coefficient of friction" in the first paragraph. What is most likely the reason why the phrase was not fixed? Azzam used Find and Replace instead of the Spell Checker. Azzam clicked "Replace All" instead of "Replace." Azzam used the tool while he was on the third page. Azzam did not set up the proper printing options.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?