the wave pictured below represents a sound wave. if the distance from "a" to "b" increased, what would happen to the pitch?

It’s D. The pitch would be lower. I’m 100% sure. I just took the test. I hope this helps you!! <3

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.