Me !
i have the end of semester: physics a test and i don't know the answer.
if anyone knows the answers let me know.

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?