When a roller coaster is at the top of a hill, it has high energy.
a. solar
b. kinetic
c. potential
d. trophic

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

At what time will the interfering waves have an amplitudeof zero?