Two speakers create identical 288 hz sound waves. a person is 1.47 m from speaker 1. what is the MINIMUM distance to speaker 2 for there to be CONSTRUCTIVE interference at that spot. (unit: m)

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

the part of the wave he is travelling on is the crest

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2