7. What velocity would be required to cause a wavelength shift of +10 nm in a 500 nm absorption line?

the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

answer; i believe the correct answer is (federalist);

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.

what is the answer