help@askiitians.com

1800-150-456-789

9 grade science> Question no 46. Pls solve it. I have atta...

question mark

Question no 46. Pls solve it. I have attached the image ............................. .

Sanya singh , 4 Years ago

Grade 9

1 Answers

Vedanth Satish Kumar

Last Activity: 4 Years ago

I really do think that we use this equation

2r=3.5+r

I use this equation because the bigger sphere with more radius sinks while the smaller sphere stays on the surface of the water, which tells us that the density of the smaller sphere is equal to the density of water due to which the sphere floats just above the surface of water. No as per the equation:-

2r=3.5+r

2r-r=3.5

r=3.5g/cm3

2r=3.5*2=7g/cm3

therefore the bigger sphere sinks while smaller sphere floats just below the surface of water.

LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

Full Live Access

Study Material

Live Doubts Solving

Daily Class Assignments

a car travels half distance with the speed of 20m/s and next half distance travel with 30 m/s , the average speed of the car is

9 grade science

1 Answer Available

Last Activity: 2 Years ago

A hockey ball of mass 200g travelling from west to east at 10m//s is struck by a hockey stick. As a result, the ball gets turned back and now has a speed of 5m//s. If the ball and hockey stick were in contact for 0.2s, Calculate (i) initial and final momentum of the ball (ii) rate of change of momentum of the balll (iii) force exerted by hockey stick on the ball.

9 grade science

1 Answer Available

Last Activity: 3 Years ago

Which step is not involved in the carbon-cycle ?

9 grade science

1 Answer Available

Last Activity: 3 Years ago

Draw a neat labelled diagram of a vernier callipers.

9 grade science

1 Answer Available

Last Activity: 3 Years ago

Why are lead compounds are added to petrol? How is it harmful?

9 grade science

1 Answer Available

Last Activity: 3 Years ago

View all Questions