Question

11. The mass of a block made of certain material is 1.35 kg and its volume is 1.5 x10-3 m?.
(a) Find the density of the block.
(b) Will this block float or sink?
Give reasons for your answer.​

Answer 1

Explanation:

Mass of block = m = 1.35 kg

Volume of block = V = 1.5 x (10)-3 m3

(10)-3 m3 (1) Density of block = m/V = 1.35 / 1.5 × (10)-3

(10)-3 m3 (1) Density of block = m/V = 1.35 / 1.5 × (10)-3= 900 kgm-3

(2) Density of block (900 kgm-3) is less than density of water (1000 kgm-3)

∴ Block will float in water

Answer 2

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