Question

Q9: A piece of wood has a mass of 100g. If it occupies a volume of 200cm 3 , find its density.​

Answer 1

Answer :

Here, we are given the mass of a piece of wood and the volume occupied by it. We need to calculate the density of the piece of wood. For that we will divide the mass by volume.

Formula to calculate the density of an object, when mass and volume is given :

• Density = m ÷ V

where,

• m denotes the mass of the object
• V denotes the volume of the object

Solution :

Given :

• Mass of the piece of wood = 100 g
• Volume occupied by the piece of wood = 200 cm³

To find :

• The density of the piece of wood

Required Solution :

Using formula,

• Density = m/V

Substituting the given values :

⇒ Density of the piece of wood = 100/200

⇒ Density of the piece of wood = 1/2

⇒ Density of the piece of wood = 0.5

Therefore, a piece of wood has a mass of 100 g. If it occupies a volume of 200 cm³, then the density of the piece of wood is 0.5 g/cm³

Answer 2

Answer:

density = mass of substance/volumn of substance

Explanation:

mass = m = 100g = 0.1kg

volumn= v = 200cm3 = 2m3

density = d = 0.05 kgm-3

or d= 0.5gcm-3