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Question

A piece of wood is 3 m long, 2 m wide, and has a thickness of 1 m. Find the density, if its mass is 2 kg.

A

0.33 kg/m3

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B

0.33 kg/cm3

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C

3 kg/m3

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D

3 kg/cm3

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Solution

The correct option is A

0.33 kg/m3


Volume of the wood (cuboid) is given by the product of its dimensions.
V=1×2×3 m
V=6 m3

Density of wood is given by:
ρ=MV
where:
M: Mass of wood

ρ=2 kg6 m3
ρ=0.33 kgm3

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