c) An object weighs 0.250 kgf in air, 0.150 kgf in water and 0.125 kgf in an oil. Calculatei. Relative density of the object [1]ii. Relative density of the oil
Question
c) An object weighs 0.250 kgf in air, 0.150 kgf in water and 0.125 kgf in an oil. Calculatei. Relative density of the object [1]ii. Relative density of the oil
Solution
i. The relative density of an object is calculated by the formula:
Relative Density = Weight of the object in air / (Weight of the object in air - Weight of the object in water)
Substituting the given values:
Relative Density = 0.250 kgf / (0.250 kgf - 0.150 kgf) = 0.250 kgf / 0.100 kgf = 2.5
ii. The relative density of the oil can be calculated by the formula:
Relative Density of oil = Weight of the object in air / (Weight of the object in air - Weight of the object in oil)
Substituting the given values:
Relative Density of oil = 0.250 kgf / (0.250 kgf - 0.125 kgf) = 0.250 kgf / 0.125 kgf = 2
So, the relative density of the object is 2.5 and the relative density of the oil is 2.
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