1.

A piece of copper of mass 106 g is dipped in a measuring cylinder containing water at 22 ml mark. The water rises to 34 ml mark. Find (a) volume of the copper piece (b) the density of copper.

Answer» (a) Volume of the copper piece,`V=34ml-22ml`
`=12ml`
`=12cm^3`
(b) Density of copper, `d=("mass of copper piece"(M))/("volume of copper piece"(V))`
`=(160g)/(12cm^3)=8.83(g)/(cm^2)`
`=8.83xx1000(kg)/(m^3)`
`=883(kg)/(m^3)`


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