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प्रश्न
Explain why an iron nail floats on mercury, but it sinks in water.
Hint : Density of iron is less than that of mercury, but more than that of water.
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उत्तर
Density of iron is less than the density of mercury; hence, an iron nail floats in mercury and density of iron is more than the density of water; hence, an iron nail sinks in water.
संबंधित प्रश्न
A bunch of feathers and a stone of the same mass are released simultaneously in air. Which will fall faster and why? How will your observation be different if they are released simultaneously in vacuum?
The density of copper is 8.83 g cm-3. Express it in kg m-3.
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An egg sinks in fresh water, but floats in a strong salt solution.
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(Density of water = 1000 kg m−3)
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A cork cut in the form of a cylinder floats in alcohol of density 0.8 gcm-3, such that 3/4 of its length is outside alcohol. If the total length of the cylinder is 35 cm and area of cross-section 25 cm2, calculate:
(1) density of cork
(2) wt. of cork
(3) extra force required to submerge it in alcohol
Select the correct option:
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Select the correct option:
The ratio between the mass of a substance and the mass of an equal volume of water at 4°C is called:
Select the correct option:
A body has density 9.6 gcm -3. Its density in SI system is:
