If I0 is the intensity of the unpolarized light incident on the first polarizer, and I1 and I2 denote the intensity of the light after the first and second polarizers, respectively, which of the following quantities are known? I1 theta1 I0 I2 theta2

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?