Question

What do sound waves and infrared waves have in common, and what makes them different?
Both carry energy through space, but sound waves are mechanical and infrared waves are electromagnetic.
Both can transfer energy through matter, but sound waves travel through air and infrared waves travel through space.
Both can transfer energy through matter, but sound waves can be heard and infrared waves can be seen.
Both carry energy through space, but sound waves require matter to pass through and infrared waves do not.

Answer 1

Explanation:

For electrons (or protons), electrostatic force is dominant and is much greater than the gravitational force. On the other hand, gravitational force is generally dominant for objects with large masses.