Conservation of Momentum Practice
1. You (60kg) and you beau (45kg) are at an ice rink holding hands. You start at
rest facing each other, and push apart, going off in opposite directions. If your
velocity is 3m/s, what is the velocity of your beau?
Before:
After:

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?

Can anybody me with this? ? (picture included.)

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