In a longitudinal wave, are the places where the coils of the wave are crowded together (squishy) , and are the places where the coils are spread apart. lesson: 4.02 Question 11 options:

rarefaction, compression

compression, rarefaction

trough, crest

crest, trough

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

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