Estimate the extension rate (increase in length per time) of human hair in units of nanometers per second. You can start by approximating the growth rate of your hair in more familiar units by estimating how much you need to get trimmed off at a monthly haircut appointment? Answers within an-order of magnitude around the typical value will be accepted. a

4.899691358 nm/s

Explanation:

On average Human hair grows about 0.5 inch per month, every month, on average, men trim their hair 4 times. that is 0.125in/7.5 days.

Converting inches into nano meters and days into seconds gives us.

3175000nm/648000s = 4.899691358nm/s.

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