Question

The density of water is 1.0 g cm-. The density of iron is 7.8 g cm-3. The density of mercury is 13-6 g cm-2. Answer the following​

Answer 1

Answer:

Density of water 1.0Cm

−3

Density of piece of iron ==7.8×10

−3

gCm

−3

7.8×10

−3

=

1000

7.8

=0.0078gcm

3

>1.0gcm

3

∴ Density of piece of iron is LESS than density of water.

Hence , piece of iron will FLOAT in water.

Answer 2

Answer:

Density of water 1.0 g Cm-3

(a) Density of piece of iron = 7.8 × 10-3 g Cm-3 ∴ Density of piece of iron is LESS than density of water.

Hence, piece of iron will FLOAT in water.

(b) Density of piece of iron = 7.8 × 10-3

Density of mercury is 13.6 × 10-3 g Cm-3

Since 7.8 × 10-3 < 13.6 × 10-3

∴ Density of piece of iron is LESS than density of mercury

∴ Piece of iron will FLOAT in mercury