1.

Two spheres of same size are made from copper and iron respectively. Find the ratio between their masses. Density of copper 8,900 kg/m and iron 7,800 kg/m3

Answer»

Given : Density Copper Dc = 8900 kg/m3

Density of Iron D1 = 7800 kg/m3 

Volume of Copper sphere = Volume of Iron sphere

To find : Ratio of Masses of Copper (MC) and Iron (MI)

Solution: Mass = Density x Volume 

MC = DC x V, M1 = D1 x V 

MC = 8900 V, M1 = 7,800 V 

MC = M1 

8900 V : 7800 V 

= 1.14: 1



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