4. Two point charges of 0.7 mC and 4.9 MC are situated in free space (2.3.6) and (0.0.0). Calculate the electric force acting on the 0.7 mC charge.

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

How to tell if a molecule is polar or nonpolar with electronegativity