Please help What is the difference in force between 2 hydrogen atoms when they are 3.00 mm apart as opposed to 0.500 mm. The average mass of a hydrogen atom is 1.67 × 10-27 kg.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.

What instrument is used to measure liquid volume?