In what ways is it useful to explain orbits of planets as circular orbits and why do we sometimes need to be more specific and use elliptical orbits? What can elliptical orbits help explain?

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?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.