If your data led you to conclude that your hypothesis was rejected, which of these should you do next? Write a report declaring the experiment to be a failure.

Throw out your results and try again to get data that proves your hypothesis.

Form a new hypothesis and repeat the steps of the scientific method.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave