EASY
9th CBSE
IMPORTANT
Earn 100

Why is the needle end of an injection sharp?

Important Questions on Floating Bodies

EASY
9th CBSE
IMPORTANT

Give two applications where they are beneficial:

(a) high pressure

(b) low pressure 

EASY
9th CBSE
IMPORTANT
A force of 200 N acts on an area of 1 cm2 uniformly. Find the pressure in Pascal.
EASY
9th CBSE
IMPORTANT
A uniform cube of edge length 5 cm and a mass 5 kg is kept on a tabletop. Find the pressure due to the cube on the tabletop on the portion where the cube touches the tabletop. (Take g=10 m/s2)
EASY
9th CBSE
IMPORTANT
A girl with the weight 40 kgf is wearing sandal with heal of area 2 cm2. Find the pressure exerted by the girl on the ground. (Take g=10 m/s2)
MEDIUM
9th CBSE
IMPORTANT
Find the greatest and the least pressure which a metal block of size 5 cm×10 cm×15 cm can exert if the mass of the block is 50 kg. Take, g=10 m/s2
EASY
9th CBSE
IMPORTANT
The atmospheric pressure at a place is 105 Pa. What thrust does it exert on a tabletop of area 1 m2?
EASY
9th CBSE
IMPORTANT
In what direction does the buoyant force on an object immersed in a liquid act?