Thermal energy comes from the ,movement of particles which produces heat, the faster the movement is the more heat
Answer: From space/ astronauts
Explanation:
A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.
The work function is what we call the minimum energy that is required by an electron to leave the metal target in the photoelectric effect.
