Two protons are separated by a distance of 3.8 x 10−8 m in air. Find the magnitude of electric force and determine whether it is repulsive or attractive?

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

there are no components of a physical goal mentioned on the list of choices that you've provided.