An object has a density of 20 g/cm 3 . when placed in a cylinder, it displaces 5 ml of water. what is the mass of the object?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

The discovery of the electron as a subatomic particle was a result of

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?