1) You have a 25 kg rock submerged in a bathtub of fresh water. If it displaces 15 kg of water, what is the density of the Rock?
2) What if a different rock with a mass of 25 kg displaces 15 kg of gold, what is its density?
3) What if different rock with a mass of 25 kg displaces 15 kg of mercury, what is its density?
1)
as it displaces 15 Kg of water
the volume is same as 15 Kg of water
volume of 15 Kg water = 15 Liter = 0.015 m^3
density of rock = 25/0.015
density of rock = 1667 Kg/m^3
the density of the rock is 1667 Kg/m^3
2)
as it displaces 15 Kg of gold
the volume is same as 15 Kg of gold
volume of 15 Kg gold = 15/19300 m^3
density of rock = 25/(15/19300)
density of rock = 32166 Kg/m^3
the density of the rock is 32166 Kg/m^3
3)
as it displaces 15 Kg of Mercury
the volume is same as 15 Kg of Mercury
volume of 15 Kg Mercury = 15/13600 m^3
density of rock = 25/(15/13600)
density of rock = 22666 Kg/m^3
the density of the rock is 22666 Kg/m^3
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