When using semaphores, a process invokes the \texttt{wait()}wait() operation before accessing its critical section, followed by the \texttt{signal()}signal() operation upon completion of its critical section. Consider reversing the order of these two operations—first calling \texttt{signal()}signal(), then calling \texttt{wait()}wait(). What would be a possible outcome of this?

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.

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Answerfood web;

Answer:

the correct option is (d) vin label

explanation:

vin stands for vehicle information number. this is a thin metallic plate attached to the engine of the vehicle and it includes all the important information which are related to the vehicle. it also provides the information whether the vehicle has been stolen or not because the replacement and alternation of vin number creates difference in the exact number printed on the vin and carved on the engine.