Find the escape speed for a rocket leaving the moon. the acceleration of gravity on the moon is 0.166 times that on earth and the moon's radius is 0.273 re. answer in units of km/s.

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?

What is the measure of a change in an objects velocity?

If a balloon is taken outside on a very cold day, what will occur?