0 Our intuition is that if we combine two beams of light into a single beam, traveling in the same direction, the intensities should add. But it is not so obvious how this can be, since the fields should add linearly, and the Poynting vector is proportional to the square of the fields. Suppose we superimpose two plane waves that are traveling in the same direction, but with random polarizations. Show that, on the average, the intensities do add

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward

A36,287 kg truck has a momentum of 907,175 kg • . what is the truck’s velocity

The charge on a charged sphere is; 1. concentrated at its center 2. distributed uniformly throughout its volume 3. clustered on its center 4. distributed uniformly over its surface