The waves that carry the most energy are the waves that
a) move into a new medium
b) are the closest together
c) move the most slowly
d) have the greatest amplitude
explain your answer

What happens in a global convection cell

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is