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WHY IS FRICTION A NECESSARY EVIL ????
Give 3 differences between contact and non contact forces
give some more examples of electrostatic force
what is the difference between frictional force and gravitational force?
why do mountaineers usually suffer from nose bleeding at high altitude
If The Momentum Is Increased By 50% Then Kinetic Energy changes by
What is the full form of SCIENCE
Pressure in solids depends upon --------- and -------- .
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?
Why do skiers use flat and long skies to slide on the snow
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.
The force which is exerted by all matter on all other matter is .................
What was archimedes principal ?
if you press the rubber sucker on a rough surface,it doesnot stick on surface why?
why wooden slippers are kept below the railway tracks?
Pressure in liquids depends upon ---------- and ---------- .
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.
When is the pressure on the ground more-when a man is lying or when a man is standing. Explain?
How many types of forces are there?Explain them?
when does a force come into play
what makes a coaster placed over the rim of a glass of water stick even when youinvert it?
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?
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.
Show That a liquid exerts pressure on the walls of the container
Why is it easier to hammer a sharp nail into wood than a blunt one ?
What is the SI unit of inertia and how it is measured?
why is it comfortable to lift a school bag with broad straps than thin sraps
Why are caterpillar tracks used in battle tanks instead of tyre
women are advised not to wear high heeled shoes.give reasons
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.
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
why it is easier to cut fruits with sharp knife rather than with the blunt knife
blood oozes out when there is a slight cut on your body
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?
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.
snow shoes are more effective for walking on snow than ordinary shoes, why? give me answer in breif plzz
why are the dams made thicker at the bottom??
Answer the following
what is atmospheric pressure?
we know that there is a huge amount of atmospheric pressure on us but we do not experience its effect why ?
has been fired upwards to launch a satellite in its orbit. Name the
two forces acting on the rocket immediately after leaving the
Explain why a balloon bursts if we blow too much air in it ????
what are the examples of muscular, friction, magnetic, electrostatic, gravitational force and pressure.
what is the principle involved in a rubber sucker?pls answer quickly.
write an activity to show that liquid pressure depends on its depth
why is the foundation of a building wider than its wall?
a car is moving towards north what will be the direction of force of friction acting on this car due to the surface of the road
Mass of an object is the same all over the universe but the weight varies from place to place. Explain
how can liquids exert equal pressure at the same depth ?
why do heavy vehicles have broad tyres?
when gases exert pressure even on its sides then where and what are the sides on which the atmosphere exerts pressure ? Does the atmosphere even exerts pressure upwards that is space.
what is non contact and contact force ? example
You are given a rubber sucker with a hook, can you use it for hanging articals? Explain how.
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 ?
a magnet attracts a piece of iron towards it. is attraction also a pull? what about repulsion between similar poles of two magnets ? is it a pull or push ?
force generated by by moving of non living materials are called _________________.
Define gravitational force.
Air exerts pressure on the earth due to its ------( mass or weight)
what is force?explain the four effects of a force can produce giving relevant examples?
A FOUNTAIN PEN WORKS ON THE PRINCIPLE OF ATMOSPHERIC PRESSURE . IS THIS STATEMENT CORRECT ? PLEASE EXPLAIN .
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 you think it is necessary to define a separate quantity called pressure?why is defining only force not enough?
pls i need the ans fast .pls pls pls pls pls
What is Direct and Indirect force?
What happens to the air in the bicycle tube when it has a puncture?
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