Question

You have a rock with a volume
of 15cm3 and a mass of 45g
What is its density?​

Answer 1

Answer:

3 g/cm³

Explanation:

Given:

• Volume of the rock = V = 15 cm³
• Mass of the rock = m = 45 g

To find:

• Density of the rock which has a mass of 45 grams and a volume of 15 cm³

Formula:

Density = Mass/Volume

Density = 45/15

Density = 3 g/cm³

The density of the object is equal to 3 g/cm³

Extra:

• Archimedes' principle says us  that the upward  force that is exerted on a body which is immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid displaced by the body
• Density can be measured in the units g/cm³,kg/m³.... and many more.

Answer 2

• Given -

• Rock has a volume of 15cm^3 & with a mass of 45g
• Volume (v) = 15cm^3
• Mass (M) = 45g

• To Find -

• What is Density of the rock?

• Solution -

We know Formula for Density is,

$★ density = \frac{mass}{volume}$

Placing values according to given Conditions,

$⟹density = \frac{45}{15}$

$⟹density = \frac{\cancel{45}}{\cancel{15}}</strong><strong>3</strong><strong>$

$⟹density = 3g</strong><strong>/</strong><strong> {cm}^{3}$

⛬ Density of rock is 3g/cm^3