Why is red the last color seen at sunset?

a: it reflects off the atmosphere.
b: it is scattered the least by the air.
c: it is bent the most by the air.
d: it is bent by raindrops.

On a distance vs time graph the line of an object at rest is a

In which of these cases are the two wave points considered to be in phase with each other?

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.