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WHY IS FRICTION A NECESSARY EVIL ????
Give 3 differences between contact and non contact forces
what is the difference between frictional force and gravitational force?
give some more examples of electrostatic force
Mohan, Rehana, and Sohan are pushing a heavy box, as shown in the given figure. Mohan is applying twice the force as compared to that being applied by Sohan, while Sohan is applying twice the force as compared to that being applied by Rehana.
If Sohan is applying a force of magnitude 60 N, then the resultant force on the box will be
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
Explain why a balloon bursts if we blow too much air in it ????
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?
Which type of force acts when we twist wet clothes to squeeze out water ?
why do porters put cloth on their head while carrying heavy loads?
When we press a rubber sucker on a smooth surface,it sticks to the surface.Explain why this happens in about 30 words.
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.
difference between electrostatic and magnetic force?
What was archimedes principal ?
why wooden slippers are kept below the railway tracks?
when does a force come into play
why school bags are provided with broad straps and not with thin straps?
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 ?
What is the SI unit of inertia and how it is measured?
How many types of forces are there?Explain them?
if you press the rubber sucker on a rough surface,it doesnot stick on surface why?
Applications of pressure in daily life
The force which is exerted by all matter on all other matter is .................
deep sea divers wear special kind of suits. Why?
whi is it easier to walk rough surfaces than on smooth substances
why do school bags have broad straps?
snow shoes are more effective for walking on snow than odinary shoes. why?
In a car accident, a seat belt helps prevent injuries by applying a force:
(1) less than the force of the moving passenger
(2) greater than the force of the moving car
(3) in the same direction as the cars motion
(4) in the opposite direction of the passengers motion
Show That a liquid exerts pressure on the walls of the container
Why are caterpillar tracks used in battle tanks instead of tyre
I dont understood the formula P=Pa+pgh and its derivation
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 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
Which dam should be stronger - one that can hold back 100,000 m3 of 10 m deep wateror one that must hold back 1000m3 of 20m deep water? Why?
why does a ball rolling along the ground stop after some time?
snow shoes are more effective for walking on snow than ordinary shoes, why? give me answer in breif plzz
what are the absolute and gravitational units of force?
why are the dams made thicker at the bottom??
Two forces P and Q act on an objeact in the same direction and P > Q. The net force on the object is ____________
what is atmospheric pressure?
Why is it easier to hammer a sharp nail into wood than a blunt one ?
has been fired upwards to launch a satellite in its orbit. Name the
two forces acting on the rocket immediately after leaving the
Pressure in liquids depends upon ---------- and ---------- .
what are the examples of muscular, friction, magnetic, electrostatic, gravitational force and pressure.
why are submarines always built with thick and heavy metals?
write an activity to show that liquid pressure depends on its depth
why is the foundation of a building wider than its wall?
how can liquids exert equal pressure at the same depth ?
why do heavy vehicles have broad tyres?
what happens to speed of moving object when it is pushed in the direction of motion
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
what is non contact and contact force ? example
name the scientist who invented a pump to extract air from a vessel.
When is the pressure on the ground more-when a man is lying or when a man is standing. Explain?
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 ?
Force required to lift a body of mass 1kg vertically is called
---------- (1000gf or 1kgf)
Define gravitational force.
Pressure is the ratio of area and thrust true or false
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
What is Direct and Indirect force?
Pressure in solids depends upon --------- and -------- .
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