Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 58

EASY

9th CBSE

IMPORTANT

Earn 100

Calculate the pressure when a force of $200 N$ is exerted on an area of $10 m^{2}$ .

Important Questions on Gravitation

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 58

Calculate the pressure when a force of

200 N

is exerted on an area of

5 m^{2}

.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 59

What are fluids? Name two common fluids.

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 59

State Archimedes principle.

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 59

When does an object float or sink when placed on the surface of a liquid ?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 60

How does a boat float in water?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 60

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}

?

MEDIUM

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 60

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}

?

HARD

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Long Answer Type Questions>Q 61

An elephant weighing $40, 000 N$ stands on one foot of area $1000 {cm}^{2}$ whereas a girl weighing $400 N$ is standing on one 'stiletto' heel of area $1 {cm}^{2}$ . Which of the two, elephant or girl, exerts a larger force on the ground and by how much?