A football travels upward and rightward through the air. What forces are applied

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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?

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference