What is the frequency of a wave if 4 crests pass in 2 seconds?

question-

which of these poems by langston hughes inspired the title "for a reason in the sun"?

answer-

lorraine hansberry took the title of a raisin in the sun from a line in langston hughes's famous 1951 poem “harlem: a dream deferred.”

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the tone of the passage is sympathetic to the forbidden love of romeo and juliet. the nurse plays a significant role in the play. she is responsible for making their meeting again possible. additionally, there is a sense of warning in the choice of words of the nurse. she seems to be authoritative when she calls romeo "scurvy knave", and at the same time the fact that she addresses to him as "sir" reflects respect. the nurse is "vexed", this word describes her confused state of mind. on the one hand, she finds romeo a fine and eloquent man, but on the other, it is thought that man's nature forces men to try to trick women.