Question

The weight of a metal bar in water is 0.42N and in air is 0.48, its density would be (density of water = 1 gm/cm3)

Answer 1

Explanation:

Which weighs more, a ton of feathers or a ton of bricks? This old riddle plays with the distinction between mass and density. A ton is a ton, of course; but bricks have much greater density than feathers, and so we are tempted to think of them as heavier. (See Figure 1.)