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Question
The mass of a body is 70kg. When completely immersed in water , it displaces 2000cm3 of water. What is the relative density of the material of the body.
The mass of a body is 70kg. When completely immersed in water , it displaces 2000cm3 of water. What is the relative density of the material of the body.
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Solution
Volume= 2000 cm3
or 2000 x 10⁻⁶ m₃ or 2 x 10⁻³ m₃
density= 70 kg / 2 x 10 ⁻³
= 5 x 10 ³
relative denisty= denisty of substance/ water density
= 35 x 10³ / 10³
=35
or 2000 x 10⁻⁶ m₃ or 2 x 10⁻³ m₃
density= 70 kg / 2 x 10 ⁻³
= 5 x 10 ³
relative denisty= denisty of substance/ water density
= 35 x 10³ / 10³
=35
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