A piece of brass of mass 40.0g is hung on a spring balance from a rigid support and completely immersed in kerosene of density 8.0 x 10²kgm. Determine the reading on the spring balance (g = 10ms"?, density of brass = 8.0 x 10®kgm)

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

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

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water