In the analogy for how a wave travels along a line of dominoes standing on end, the way the dominoes fall over one after another in place represents .
A. a wave
B. the initial disturbance
C. the energy of the wave
D. particles in the substance
In the analogy for how a wave travels along a line of dominoes standing on end, knocking over the first domino represents .
A. a wave
B. the initial disturbance
C. the energy of the wave
D. a particle in the substance
*the initial disturbance is incorrect for both of them*

Will you chech and finish these for me, because i am stumped with them.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

What are some properties of transverse waves?