How do two sublevels of the same principal energy level differ from each other

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.

The mantle is made up of which structural zones?

What is the relationship between the direction of motion of the balloon and the wind currents