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WHY IS FRICTION A NECESSARY EVIL ????
you can fill a bucket from a downstairs tap quicker than a upstair tap .why ?
Give 3 differences between contact and non contact forces
give some more examples of electrostatic force
why do mountaineers usually suffer from nose bleeding at high altitude
If The Momentum Is Increased By 50% Then Kinetic Energy changes by
3-4 examples of solid pressure
What is the full form of SCIENCE
give two examples from everyday life for the force of push and its effects
1-Why buses and trucks have double wheels at the back? 2-Why poters place a round piece of cloth on their heads? 3-Why dams are made stronger and thicker at the bottom than the top? 4-Why the pressure inside an aeroplane is maintained at normal ground level atmospheric pressure?
why do porters put cloth on their head while carrying heavy loads?
The second's hand of a watch is 2cm long, the speed of the tip of this hand is
A. 0.21 cm/s B. 2.1 cm/s C. 21.0 cm/s
I think we can solve this question by calculating angular velocity.
What was archimedes principal ?
why wooden slippers are kept below the railway tracks?
why school bags are provided with broad straps and not with thin straps?
When we press a rubber sucker on a smooth surface,it sticks to the surface.Explain why this happens in about 30 words.
Pressure in liquids depends upon ---------- and ---------- .
How many types of forces are there?Explain them?
A can filled with water, be heated so that water boils. Now seal the mouth with airtight cap. Let the can cool. It's sides get deformed. Why?
if you press the rubber sucker on a rough surface,it doesnot stick on surface why?
If a body is moving with uniform speed in a particular direction on a perfectly smooth surface, then no force is acting on it. True or False? Explain.
Applications of pressure in daily life
deep sea divers wear special kind of suits. Why?
difference between electrostatic and magnetic force?
why do school bags have broad straps?
snow shoes are more effective for walking on snow than odinary shoes. why?
Air exerts pressure on the earth due to its ------( mass or weight)
what makes a coaster placed over the rim of a glass of water stick even when youinvert it?
Show That a liquid exerts pressure on the walls of the container
women are advised not to wear high heeled shoes.give reasons
What is the SI unit of inertia and how it is measured?
Why are caterpillar tracks used in battle tanks instead of tyre
Mass of an object is the same all over the universe but the weight varies from place to place. Explain
A force of 4N acts on a body of mass 2kg for 4s. Assuming the body to be initially at rest, find
a) its velocity when the force stops acting.
b) the distance covered in 10s after the force starts acting.
Pressure in solids depends upon --------- and -------- .
why it is easier to cut fruits with sharp knife rather than with the blunt knife
Why it is easier to cut vegetables with a sharp knife ...and difficult with a blunt knife ...???
whats the logic ....i need scientific reason ...... it is asociated with the CH- 11 Force And Pressure
ACTIVITY 11.8, ACTIVITY 11.9 , ACTIVITY 11.10
I WANT THE AIM,OBSERVATION AND CONCLUSION OF THESE ACTIVITIES
why does a ball rolling along the ground stop after some time?
what happens to the speed of cart when horse applies more force
snow shoes are more effective for walking on snow than ordinary shoes, why? give me answer in breif plzz
What is Direct and Indirect force?
why are the dams made thicker at the bottom??
what is atmospheric pressure?
has been fired upwards to launch a satellite in its orbit. Name the
two forces acting on the rocket immediately after leaving the
name the force used in removing iron scrap from a heap of mixed scrap
what are the examples of muscular, friction, magnetic, electrostatic, gravitational force and pressure.
why do skiers use flat and broad skin?
write an activity to show that liquid pressure depends on its depth
why is the foundation of a building wider than its wall?
Explain why a balloon bursts if we blow too much air in it ????
Your Physics Book has a mass of 400 g. It is kept on a horizontal table. Taking g = 10 m/s2, find the force (both magnitude and direction) exerted by
(a) the table on the Physics book (b) the Physics book on the table (c) the earth on the Physics book (d) the Physics book on the earth.
how can liquids exert equal pressure at the same depth ?
why do heavy vehicles have broad tyres?
what is non contact and contact force ? example
When is the pressure on the ground more-when a man is lying or when a man is standing. Explain?
name the scientist who invented a pump to extract air from a vessel.
A boy is wearing a shirt of mass 150 g. How much force is he exerting on the dress? Do not forget to state the direction.
What is the difference between inertia and friction ?
how does the pressure exerted by liquid vary with
Define gravitational force.
what is force?explain the four effects of a force can produce giving relevant examples?
how does pressure due to liquid held in a container vary with,(a)depth (b) amount (c)shape and size of the container
Why do skiers use flat and long skies to slide on the snow
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