If the wave above takes 6 seconds to get from beginning to end, what is the speed of the wave?

18meterpersecond

Explanation:

distance=3m

time=6

speed=?

distance=speed/time

3=speed/6

3×6=speed

18 meterpersecond =speed

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.