2. Weight is a force and has a unit of Newtons (N). Derive the SI units for weight and show your working out.

Aballet student who learns with the of his instructor is demonstrating learning.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions