Wave Motion (Credit to Daniel)

Two Microphones
A. 330 ms^-1

Volcanic Waves
A. 6.7 s
B. 110 s
C. 730000 m

Wave Direction
A. B

Waves on a Beach
A. (u/cos(theta))

How Fast?
A. 234 m

Conical Wavefront
A. 30 degrees
B. 13 s