Asample of helium gas is in a sealed, rigid container. what occurs as the temperature of the sample is increased?

Which metal exist in liquid state and can be cut with knife ?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this