The problem was too big to type in my phone.
I hope my answer is readable.
P.S After the collision P is also moving in the same direction as Q.
The tangent of that angle is 17.63/100 = 0.1763 .
My calculator says that the angle with that tangent is 9.9985° .
10° is awfully close, and it's a much easier answer.
(It's less than 0.015% wrong.)
Answer:
The predominantly single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes (pro– = before; –karyon– = nucleus). Animal cells, ...
A wave where the oscillation is parallel to the motion is a longitudinal wave