What is the mass of an rock that has a density of 3.52 g/cm3 if, when put in a
graduated cylinder with 50 ml of water makes the level rise to 62 ml. (* 1cm3 =
1ml)

Iwould sure like to answer your question but i honestly just don’t know

The charge of an ion with 55 protons and 52 electrons is +3. the reason is because protons are positive, and there are three more than the amount of negative electrons.

Since the pully is a simple machine so the mechanical advantage is a 1