Urgent: when traveling from an air to a solid, what would you expect a sound wave to do?

a. speed up

b. fluctuate speed

c. stay the same speed

d. slow down.

Speed up

Explanation:

Took the test and got it wrong when I answered Slow Down. Sound travels faster through solid then through air.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y