Use the drop-down menus to explain how noise cancellation works.
Waves with similar
are created to interfere with unwanted sound waves. The
wave overlap with the troughs of the other wave, causing the two waves to cancel out each other.
of one

Amplitudes

Crests

Explanation:

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