HELP QUICK!! How do you estimate the density of an object without measuring its mass or volume?

The method involves balancing two unknown objects of masses M1 and M2 on each side of a pivot on a metre rule and measuring their corresponding moment arms. The object whose density is to be found is then immersed in a liquid of known density and the new moment of the arm of this object is measured.

201cm/s÷5: 18

explanation:

there is no explanation

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.