A piece of brass (Cu and Zn) weighs `12.9g` in air. When completely immersed in water, it weighs `11.3g`. Then relative densities of Cu and Zn are `8.9 and 7.1` respectively. The mass of copper in the alloy is

A piece of brass (Cu and Zn) weighs 12.9 g in air. When completely immersed in water, it weights 11.3 g. The relative densities of Cu and Zn are 8.9 and 7.1 respectivey. Calculate the mass of copper in the alloy

A Piece of brass (alloy of zinc and copper) weighs 12.9 g in air. When completely immersed in water it weighs 11.3 g . What is the mass of copper contained in the alloy ? Specific gravity of zinc and copper are 7.1 and 8.9 respectively.

A solid weighs 120 gf in air and 105 gf when it is completely immersed in water. Calculate the relative density of solid.

A metal piece weighs 200gf in air and 150 gf when completely immersed in water. Calculate the relative density of the metal piece.

What mass of lead will weigh as much as 8 gm of iron when both are immersed in water ? (given specific gravities of iron and lead are 8 and 11 respectively).

What mass of lead will weigh as much as 8g of iron when both are immersed in water? (Given sp. gravity of lead and iron are 11 and 8 respectively).

A metal piece weighs 200gf in air and 150 gf when completely immersed in water. How much will it weigh in a liquid of density 0.8 "gcm"^(-3) ?