What would happen if we were to put solid balls of the same shape and size, but made of different materials, in the column of liquid?

The ball with the denser material will sink faster.

Explanation:

materials of higher density will sink and materials of lower densities will float.

where is the circuit diagram ?

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )