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Posted by Laya Varshini.P ... 5 years ago (9408143)
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Yogita Ingle 5 years ago (2577571)
Friction is defined as the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. Friction and normal force are directly proportional to the contacting surfaces and it doesn’t depend on the hardness of the contacting surface. With the increase in relative speeds, the sliding friction reduces whereas fluid friction increases with the increase in the relative speed, also fluid friction is dependent on the viscosity of the fluid.
Following are the friction types which depend on the types of motion:
- Static Friction: Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.
- Sliding Friction: Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.
- Rolling Friction: Rolling friction is defined as the force which resists the motion of a ball or wheel and is the weakest types of friction.
- Fluid Friction: Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.
Posted by Ayush Koul 5 years ago (9555237)
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Yogita Ingle 5 years ago (2577571)
Learning a new skill is quite challenging. I vividly remember the challenges I had to face to learn to ride bicycle. My father could not afford me children’s bicycle, which has safety wheels on either side of the bicycle to keep you from falling. So I had to learn bicycling on my father’s bicycle. It was far to bigger than me; I had real difficulty controlling it. Since my height was very short, I could not mount the seat meant for riders, I just hung on it and ran along as it moved. I fell hundreds of times, injuring myself; but I never gave up.
Initially my cousins helped me balance it. thus slowly, gradually I learnt to maintain balance. Finally I succeeded in riding it. I was greatly thrilled to have ridden it without falling.
Posted by Deepak Gour 5 years ago (3288503)
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Yogita Ingle 5 years ago (2577571)
In psychology, the focus is on the interdependence between the environment and people, as the environment becomes meaningful with reference to the human beings who live in it.
Posted by Aastha Bhurani 5 years ago (9786104)
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Yogita Ingle 5 years ago (2577571)
The ‘Green Revolution’ was introduced in India, in the late 1960s. Indian farmers used it for the production of major food crops like wheat and rice. They made use of the High Yielding Variety seeds, which produced much greater yield than the traditional seeds. However, they needed plenty of water, chemical fertilisers and pesticides to produce best results.
Posted by Sneha Mohabe 5 years ago (10344542)
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Yogita Ingle 5 years ago (2577571)
Khilafat movement was initiated under the leadership of the two Ali brothers namely Mohammed Ali and Shaukat Ali-Maulana Azad, Hakim Ajmal Khan and Hasrat Mohani. The movement was started to support the Sultan of Turkey whom The Muslim population in India considered their religious head.
The Khilafatists had formed a three-point programme
- The Ottoman Caliph: He should retain his empire
- The Caliph must be provided with sufficient territory so as to enable him to defeat the Islamic faith
- The Arab lands that is Arabia, Syria, Iraq, Palestine must stay under the Muslim rule.
On October 17, 1919, throughout “Khilafat Day’ was observed
The Khilafat movement was launched by Muslims in India to persuade the British government and rather not to abolish the caliphate. The leaders of this Khilafat movement accepted the non-cooperation movement of Gandhiji and led a joint protest against the British.
Sneha Mohabe 5 years ago (10344542)
Posted by Devesh Singh 5 years ago (9080856)
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Dheeraj Kumar Yadav 5 years ago (10159368)
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Laxmisingh Raj 5 years ago (9408085)
Yogita Ingle 5 years ago (2577571)
We should conserve forests because they are essential for us in the following terms:
- Forest provide us with oxygen, they cause rainfall.
- Forest prevents soil erosion.
- Plants are dependent on animals and birds for their pollination and seed dispersal.
- Forests provide us with various medicines.
- Various forest products are used as raw materials in industries.
Wildlife is the part and parcel of the ecosystem. They play a major role in maintaining the ecological balance. Some animals also help in cleaning the environment. We have to conserve the wildlife due to following reasons
- They are the consistent element of the nature
- Ecological balance is maintained by these wildlife community
- Some species are extinct and some are in the urge of extinction
- Endangered species must be protected
- Wildlife have the equal rights to stay on this planet
Posted by Manila Mehandiratta 5 years ago (5077596)
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Sonukishore Kamat 5 years ago (10256880)
Posted by Unaisa Azhar 5 years ago (10200955)
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Yogita Ingle 5 years ago (2577571)
Inter-connection of various devices is called____
Network
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Yogita Ingle 5 years ago (2577571)
Cancer, diabities,hypertension are some age related problems
Posted by Sowmiya Karthi 5 years ago (10349011)
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💐💐Taniya 💐💐💐 5 years ago (10252531)
Posted by Harshavardhini J 5 years ago (10152867)
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Yogita Ingle 5 years ago (2577571)
Communication is a process that involves sending and receiving of messages through a verbal and non-verbal method. The sender sends a message, the receiver receives a message and sends it back with the feedback to the sender again.
Posted by Krazy Girl 5 years ago (9156732)
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Apoorva Rengasamy 4 years, 11 months ago (10326756)
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Yogita Ingle 5 years ago (2577571)
There are two ways of finding the area.
1) Dividing the hexagon into 6 equilateral triangles and getting the area of one triangle multiplied by 6.
2) Dividing the hexagon into two trapezium and getting the area of individual trapezium.
First we need the height of the equilateral triangle.
By pythagorean theorem we have :
5^2 - 2.5^2 = 18.75
Square root of 18.75 = 4.330
1) Area of one equilateral triangle :
4.330 × 0.5 × 5 = 10.825
For the six :
6 × 10.825 = 64.95 square centimeters.
2) The area of the trapezium is :
The two parallel sides of the trapezium are 10cm and 5 cm.
The height is 4.30cm
Area :
(10 + 5) /2 × 4.30 = 32.25
We have two trapezium.
2 × 32.28 = 64.5 square centimeter.
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Yogita Ingle 5 years ago (2577571)
An inelastic collision is such a type of collision that takes place between two objects in which some energy is lost. In the case of inelastic collision, momentum is conserved but the kinetic energy is not conserved. Most of the collisions in daily life are inelastic in nature.
When two objects collide under inelastic condition. The final velocity with which object move is given by-
V=(M1V1+M2V2)(M1+M2)
Where,
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