Calculate the density of an object of volume $3 m^{3}$ and mass 9 kg. State whether this object will float or sink in water. Give reason for your answer.

Q. Volume of an object is 20 cm³ and the mass in 50 g. Density of water is 1 g cm^{$-$ 3}. Will the object float on water or sink in water?

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An object of mass 26 kg floats in air and it is in equilibrium state. Air density is 1.3 kg/m3. The volume of the object is:

The correct option is D 20 m3Given, mass of object (m)=26 kgDensity of air (ρ)=1.3 kg/m3The object is in equilibrium state.So, mg=ρairVg26g=1.3 VgV=261.3V=20 m3.

An object of mass $26 k g$ floats in air and it is in equilibrium state. Air density is $1.3 k g / m^{3}$ . The volume of the object is:

The correct option is D $20 m^{3}$
Given, mass of object $(m) = 26 k g$
Density of air $(ρ) = 1.3 k g / m^{3}$
The object is in equilibrium state.
So, $m g = ρ_{a i r} V g$
$26 g = 1.3 V g$
$V = \frac{26}{1.3}$
$V = 20 m^{3}$ .