Classify each statement about electromagnetic radiation as true or false. a. Infrared radiation has longer wavelengths than gamma rays.
b. If the frequency of a wave decreases by some factor, the wavelength of that wave increases by the same factor.
c. The light from the sun includes multiple types of electromagnetic radiation.
d. Ultraviolet radiation is lower in energy than visible light.
e. The speed of electromagnetic radiation varies with frequency.
f. Visible light has a lower frequency than infrared radiation.

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?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?