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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
when does a force come into play
why do mountaineers usually suffer from nose bleeding at high altitude
If The Momentum Is Increased By 50% Then Kinetic Energy changes by
A man exerts a pressure of 14Pa by applying a force of 70N on a box. Calculate the area over which the force is applied.
What is the full form of SCIENCE
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?
Pressure in liquids depends upon ---------- and ---------- .
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 is it comfortable to lift a school bag with broad straps than thin sraps
why wooden slippers are kept below the railway tracks?
3-4 examples of solid pressure
why school bags are provided with broad straps and not with thin straps?
Pressure in solids depends upon --------- and -------- .
When we press a rubber sucker on a smooth surface,it sticks to the surface.Explain why this happens in about 30 words.
Three small metal lcubes have a mass of 20g each. One cube is of aluminium (density = 2.7g/cm3), one is of brass (density = 8.5g/cm3) and one is of liead (density = 11.4g/cm3). Which cube when drooped into a beaker of water will result in the greatest rise in the water level.
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
deep sea divers wear special kind of suits. Why?
a} the surface area of the end of a brick is 50 cm square. it exertsa force of 50 N . What pressure is exerted on the ground by the brick ?
b} if the brick is replaced by a block of wood how would the pressure be affected ? Justify your answer.
it was not a problem to solve the a part but i'm confused for the b part. Please solve my query.
difference between electrostatic and magnetic force?
Define electromagnetic force. With example
why do school bags have broad straps?
snow shoes are more effective for walking on snow than odinary shoes. why?
A Cube Of Side 'x' Rests On The Floor.Given That The Pressure Exerted By This Cube On The Floor Is P What Is The Pressure Exerted By Another Cube Of The Same Material Of Side 4x?(Take g = 10Nkg-1)Assume That Both Are In Same Position
Please Help Its Urgent
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 are caterpillar tracks used in battle tanks instead of tyre
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.
The force which is exerted by all matter on all other matter is .................
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?
snow shoes are more effective for walking on snow than ordinary shoes, why? give me answer in breif plzz
a man weight 60kg stands on a wooden blank 1meter long and 40 cm wide find the pressure exerted by man on ground
why are the dams made thicker at the bottom??
what is atmospheric pressure?
What is the difference between inertia and friction ?
has been fired upwards to launch a satellite in its orbit. Name the
two forces acting on the rocket immediately after leaving the
What is the special name of frictional force exerted by fluids (like air or water)?
what are the examples of muscular, friction, magnetic, electrostatic, gravitational force and pressure.
what are the advantages of pressure ?
write an activity to show that liquid pressure depends on its depth
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 is the foundation of a building wider than its wall?
Explain why a balloon bursts if we blow too much air in it ????
how can liquids exert equal pressure at the same depth ?
why do heavy vehicles have broad tyres?
Which type of force acts when we twist wet clothes to squeeze out water ?
What happens to the air in the bicycle tube when it has a puncture?
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?
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.
we know that there is a huge amount of atmospheric pressure on us but we do not experience its effect why ?
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 force?explain the four effects of a force can produce giving relevant examples?
women are advised not to wear high heeled shoes.give reasons
Define gravitational force.
If the area of my head is 15 into 15cm then how much weight of air would I carry on my head?
how does pressure due to liquid held in a container vary with,(a)depth (b) amount (c)shape and size of the container
write true or false. correct the false statements.
1. gravitational force pushed food down the alimentary canal?
What is Direct and Indirect force?
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.
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