Question

the volume of 180g and 18 g of a substance is 200³ and 20³. if the density of water is 1g/cm³ then​

Answer 1

Answer:

Given, mass of substance, m=50g;

volume, V=20cm

3

; density, ρ=?

The density of substance given is

d=

V

m

=

20cm

3

50g

=2.5gcm

−3

Hence the density of the substance is greater than the density of water. Hence the weight acting downwards Vdg is greater than the buoyant force acting upwards Vρ

water

g.

Hence the substance will sink in water.

Answer 2

Step-by-step explanation:

Given, mass of substance, m=180g;

volume, V=200cm^3; density, ρ=?

The density of substance given is 

d= V/m = 200cm^3 / 180g = 1.1gcm^−3

Hence the density of the substance is greater than the density of water. Hence the weight acting downwards V.d.g is greater than the buoyant force acting upwards V.ρ(water).g.

Hence the substance will sink in water.

Similarity,

Given, mass of substance, m=18g ;

volume, V=20cm3; density, ρ=?

The density of substance given is 

d = V/m = 20cm / 18g = 1.1gcm^−3

Hence the density of the substance is greater than the density of water. Hence the weight acting downwards Vdg is greater than the buoyant force acting upwards Vρwaterg.

Hence the substance will sink in water.

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