1.Calcula la masa de una silla cuyo peso tiene una magnitud de 14 N.

What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving