What were the models of ancient greek atoms?

The atomic radius of metal X is 1.20 * 102 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic. Calculate the density of metal X (atomic weight = 42.3 g/mol).

Two electrons are separated by a distance of 3.00 * 10^-6 meter. What are the magnitude and direction of the electrostatic forces each exerts on the other? (1) 2.56 * 10^-17 N away from each other (2) 2.56 * 10^-17 N toward each other (3) 7.

A star is a ___ that emits energy produced by nuclear reactions in its interior.

When a neutrally charged atom loses an electron to another atom, the result is the creation of A. two charged atoms. B. two negatively charged atoms. C. two positively charged atoms. D. two neutrally charged atoms.

How do you feed a dog medicine

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

What is the name of a particle with no charge in an atom?

What voltage produces a current of 500 amps with a resistance of 50 ohms?

What is cell in electricity?

When a siren is approaching you, how does the wavelength of the waves reaching you compare to the actual wavelength that the siren emits?