Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hi, I'm Diana. Great to be here with you today. I was wondering why is it that a golf ball and a ping ...

Density describes how closely packed the particles are in a solid, liquid or gas. There is little difference between the density of a liquid and its corresponding solid (eg water and ice). This is ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. RUBEN: Setting up an experiment, Elliot. ELLIOT: What you doing? RUBEN: Well, I've got three glasses ...

Density also depends on the material. A piece of iron with the same dimensions as a piece of aluminium will be heavier because the atoms are more closely packed and each iron atom has much more mass ...