Why do opposite charges attract and like charges repel?

What happens to a flexible container of gas when it is heated

Ultraviolet and infrared radiations are members of the electromagnetic spectrum what are the two properties that makes them different?

While anchored in the middle of a lake, you count exactly five waves hitting your boat every 10 s. you raise anchor and start motoring slowly in the same direction the waves are going. when traveling at 1.

7 factors that can affect physical fitness

No work is done by gravity on a bowling ball that rolls along a bowling alley because

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...

Levi observed properties of four different waves and recorded observations about each one in his chart.

A rocket is shot straight up from the earth, with a net acceleration (acceleration by the rocket engine minus gravitational pullback) of during the initial stage of flight until the engine cut out at sec.

Which moon has a thick atmosphere made mostly of nitrogen?

J. J Thompson proposed that atoms were made up of positively charged particles with electrons scattered into them. How did he reach this conclusion?