Exercise 3.3.4: Impact of quantum size. info About n processes are time-sharing the CPU. The average total CPU time is T. The time quantum is Q. The context switching overhead is S. Determine the fraction of CPU time wasted on context switching for the following cases: (a) T < Q (b) T >> Q (c) Q approaches 0 (d) Under what condition will the wasted fraction of CPU time be 50%

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.

B. newspapers for sure! i had this question and got it right. hope this xx