Assuming that the mass of each inner tube can be ignored what is the acceleration of each boy and his inner tube?

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

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

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

c) both a and b.

conservation of mass

mass before something happens = mass afterwards