Question

Numerical problems:

1) The mass of 1m³ of water is 1kg. Find out the density of water?

2) If the volume of a cube is 5m³ and its density is 500kg/m³. What is its mass?

3) An irregular object has a mass of 42g and a density of 3g/cm³. Find the value.

Plz do it in a rough page and post it. I will mark your answer as branliest.​​

Answer 1

Answer: (1)the mass of 1l of water is 1kg, then what is the density of water?  Density = 1 kg per dm³. Density of water is 1 kg mass/ litre.

MASS = 2500 KG

VOLUME = 5 M³

DENSITY= MASS / VOLUME

DENSITY= 2500/5

             = 500 KG / M³

             = 500 * (    1000/(10²)³)

             = 500* 1000/10^6

             =500*10^-3

             = 0.5 G /CM³.

3

Explanation:

Answer 2

Explanation:

Question 1 :-

The mass of 1m³ of water is 1kg. Find out the density of water?

Solution 1 :-

Volume = 1m³

Mass = 1Kg

Density = Mass/Volume

⇒ 1/1

⇒ 1Kg/m³ is the density of water.

Question 2 :-

If the volume of a cube is 5m³ and its density is 500kg/m³. What is its mass?

Solution 2 :-

Volume = 5m³

Density = 5000Kg/m³

Mass = Density × Volume

⇒ 500 × 5

⇒ 2500 Kg is the mass of cube.

Question 3 :-

An irregular object has a mass of 42g and a density of 3g/cm³. Find the volume.

Solution 3 :-

Mass = 42g

Density = 3g/cm³

Volume = Mass/Density

⇒ 42/3

⇒ 14 cm³ is the volume of the object.