When humans look at the sky, it appears blue, but the sun appears yellow. what causes this phenomenon?

a. the atmosphere creates blue light and the sun creates yellow light.
b. the atmosphere absorbs yellow light more than blue light.
c. the atmosphere scatters blue light more than yellow light.
d. the atmosphere reflects all of the colors of light.

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

What causes the formation of ocean currents?