If the amplitude of a wave increases by the factor of 4 by how much does the energy increase

The image shows embryos of three vertebrate classes

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

This is the process of making a prediction based on the results of prior observations of similar events.