+20 POINTS!
If a spring was stretched to 2 times its normal length, the elastic potential energy in the spring would change by a factor of ___? Round to the nearest whole number.

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

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?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is