Aray of red light traveling through air strikes a block of quartz at an angle of incidence of 40°. if that light travels through the quartz and then enters a large crystal of sodium chloride (salt), what is the angle of refraction of the light in the sodium chloride? the index of refraction for quartz is 1.46, and sodium chloride's index of refraction is 1.54.

a) 46°

b) 40°

c) 25°

d) 82°

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

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