Planets move around the sun in elliptical path. this means sometimes in their orbit planets get further away from the sun. when the planets move away from the sun, how does the rotational potential energy and angular momemtum of the sun - planet system change?

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes