Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 4

MEDIUM

9th CBSE

IMPORTANT

Earn 100

Explain, why the tip of a sewing needle is sharp.

Important Questions on Gravitation

MEDIUM

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 5

When is the pressure on the ground more - when a man is walking or when a man is standing? Explain.

MEDIUM

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 6

Why a truck or a motorbus has much wider tyres?

MEDIUM

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 7

Why is it easier to walk on soft sand with a flat shoe than with a pencil-heeled shoe?

MEDIUM

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 8

Why snow shoes stop you from sinking into snow?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 9

Why, when a person stands on a cushion, the depression is much more than when he lies down on it?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 10

A piece of steel has a volume of $12 {cm}^{3}$ and a mass of $96 g$ . What is its density in $g {cm}^{- 3}$ ?

HARD

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 10

A piece of steel has a volume of $12 {cm}^{3}$ and a mass of $96 g$ . What is its density in $kg m^{- 3}$ ?

EASY

9th CBSE

IMPORTANT

Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 11

Explain the reason due to which buoyancy arises.