Suppose an electron in an atom drops from energy level 4 to energy level 2. What happens to the lost energy?

What mysteries are solved by cosmic inflation? Choose all that apply

How can we know the Sun’s atmosphere contains neon vapor?

Suppose you are on an escalator that is moving upward at [x] mph. You are walking upward at [y] mph relative to the escalator. How fast are you walking relative to the ground? You do not need to include units. Answer: _____ mph upward

Suppose you are on a spaceship flying toward at 0.4c, where c is the speed of light. You shine a beam of light toward Earth. How fast does the beam strike Earth’s surface?

Quantum computers compute using [qu]. Classical computers compute using [bit].  

What is cosmic inflation?

Whatever is causing the Universe’s expansion to accelerate is called [de]. The unseen source of gravity that causes galaxies to cluster together is called [dm]. 

What properties does light exhibit?

Suppose you are on a spaceship flying away from Earth at 0.5c. You are communicating with your friend on Earth by radio. What will your friend notice about your rate of speech?