13. A beam of light traveling in air (n=1.000293) strikes the surface of mineral oil at an angle of 23.1° with the normal to the surface. If the light travels at 2.17 x 10° m/s in the oil.
a. Determine the index of refraction of the mineral oil.

If a simple machine reduces the strength of a force, what must be increased?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?