Question

The volume of 50 g of a substance is 20 cm3. If the density of water is 1 g cm–3, will the substance float or sink?

NCERT Class IX
Sciences - Main Course Book

Chapter 10. Gravitation

Answer 1

m = 50 gms
Volume = 20 cm³
Density = 1 gm / cm⁻³

Density of the substance = m / V = 50 / 20 = 2.50 gm/cm³

As the density of the substance is more than that of water, the substance will sink.

Answer 2

_/\_Hello mate__here is your answer--

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⭐ CONCEPT:-- If the density of an object is more than the density of a liquid, then it sinks in the liquid. On the other hand, if the density of an object is less than the density of a liquid, then it floats on the surface of the liquid.

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Mass of sub. , M= 50 g

Volume of sub., V= 20 cm^3

density of the substance

= M/V

=50/ 20

= 2.5 g/cm^3

The density of the substance is more than the density of water (1 g cm^−3). Hence, the substance will sink in water.

I hope, this will help you.☺

Thank you______❤

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