A people mover has a velocity of 1 m/s, VF, and is 150 m, XF, long. If a man walks 2 m/s, VI, relative to the people mover, how long will it take him to reach the opposite end if he walks in the direction that the people mover travels?

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?

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.