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Ask QuestionPosted by Yuvraj Soni 4 years, 10 months ago
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Yogita Ingle 4 years, 10 months ago
Contact force is a force that is applied by objects in contact with each other. The contact force acts on a point of direct contact between the two objects. This force can either be continuous as a continuous force or can be momentary in the form of an impulse.Contact force is responsible for most of the interactions we experience in daily life.
Posted by Rani Swain 4 years, 10 months ago
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Posted by Hamid Lone 4 years, 10 months ago
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Piyush Kumar 4 years, 9 months ago
Yogita Ingle 4 years, 10 months ago
The special shape is given to the boats and aeroplanes because,
Boats and aeroplanes are the bodies moving in the fluids like ship in water and aeroplanes in the air to reduce the fluid friction, called as 'Streamlined Shape'. This friction cause the aeroplane down and causes it to consume more fuel. To avoid this, boats and aeroplanes given a special shape.
Posted by Vishal Sahu 4 years, 10 months ago
- 2 answers
Piyush Kumar 4 years, 9 months ago
Yogita Ingle 4 years, 10 months ago
As lemon pickle is an acid and aluminum is a metal and metals react with acids to produce hydrogen gas.
So, it is not advisable to store lemon pickle in an aluminum utensil because it will spoil the pickle and holes will be formed in the vessel.
Posted by ꧁༒Nikhil ༒꧂ Sharma 4 years, 10 months ago
- 3 answers
Posted by Krishna P 4 years, 10 months ago
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Diksha Laniya🐥 4 years, 9 months ago
Posted by Krishna P 4 years, 10 months ago
- 2 answers
Dipti Gupta 4 years, 10 months ago
Yogita Ingle 4 years, 10 months ago
Red data book
- The source book that is used to keep a record of endangered species of plants, animals and other species existing within the territory of the state or country is called red data book.
- There are red data books for plants, animals and various other species.
- It is maintained by the International union for theConservation of Nature Resources (IUCN).
- It contains the most updated information of the global conservation status of species.
Posted by Jit Barman 4 years, 10 months ago
- 1 answers
Yogita Ingle 4 years, 10 months ago
- Sound is a form of energy that travels in the form of vibrations through the air or any another medium.
- Vibration is defined as a rapid to and fro or up and down movement about a mean position.
- Vibrations travel through a medium such as air and reach our ears where they are interpreted by the brain as sound
Posted by Nishant Kumar 4 years, 10 months ago
- 5 answers
Yogita Ingle 4 years, 10 months ago
A candle flame consists of three different zones. Each zone has different temperatures. Every zone has different colour and this will help us in understanding the temperatures of each zone.
- The first zone is called the Outer zone
- The second zone is called the Middle zone
- The third zone is called as Inner zone
Due to complete combustion, the outer zone is blue. This zone is the hottest in temperature when compared to the other zones. This blue coloured zone is the non-luminous part of the flame.
Posted by Nishant Kumar 4 years, 10 months ago
- 1 answers
Yogita Ingle 4 years, 10 months ago
The sources of heat energy for domestic and industrial purposes are mainly wood, charcoal, petrol, kerosene, etc. These substances are called fuels. A good fuel is one which is readily available. It is cheap. It burns easily in air at a moderate rate. It produces a large amount of heat. It does not leave behind any undersirable substances.
Posted by Shivani Shivani 4 years, 10 months ago
- 5 answers
Nishant Kumar 4 years, 10 months ago
Kanika Dhiman 4 years, 10 months ago
Yogita Ingle 4 years, 10 months ago
Sodium is stored in kerosene as it is a very highly reactive metal.
Posted by Shivani Shivani 4 years, 10 months ago
- 5 answers
Anju Singh 4 years, 9 months ago
Yogita Ingle 4 years, 10 months ago
Sonorous: Metals produce a ringing sound when struck hard. So, they are called sonorous.
Posted by Shivani Shivani 4 years, 10 months ago
- 4 answers
Yogita Ingle 4 years, 10 months ago
Sodium is an alkali metal and is so soft that it can be easily cut by knife.
Posted by Hamid Lone 4 years, 10 months ago
- 1 answers
Yogita Ingle 4 years, 10 months ago
The worn out tyres are discarded because their tread are worn off and limiting their effectiveness of providing required amount of friction.
Posted by Dhritishman 9A 4 years, 10 months ago
- 5 answers
Posted by Nimmi Gowda 4 years, 10 months ago
- 2 answers
Dipti Gupta 4 years, 10 months ago
Yogita Ingle 4 years, 10 months ago
The kharif crops are harvested at the end of monsoon season during September or october. For Example: Paddy,maize,millet,soyabean,groundnut,cotton. Paddy is grown only in rainy season because it requires a lot of water. If wheat is sown in the kharif season,it will not grow well.
Posted by Vani Baliyan 4 years, 10 months ago
- 2 answers
Yogita Ingle 4 years, 10 months ago
Earthquakes: Are earthquake is a sudden shaking or trembling of the earth which lasts for a very short time. Earthquakes can cause immense damage to buildings, dams, etc. They may also cause floods, land slides, tsunamis and loss of life.
It is caused by a disturbance deep inside the earth's crust. The outer layer of the earth is fragmented.
Each fragment is called a plate.
Earth's plates are in continualen these plates brush ptone another or undergo collision, causes earthquakes.
Posted by Analip Kashyap 4 years, 10 months ago
- 1 answers
Meghna Thapar 4 years, 10 months ago
Traditionally men wear dhotis, kurta, angarkha and paggar or safa (kind of turban headgear). Traditional Chudidar payjama (puckered trousers) frequently replaces dhoti in different regions. Women wear ghagra (long skirt) and kanchli (top). However, dress style changes with lengths and breaths of vast Rajasthan.
Posted by Mohitha Satheesh 4 years, 10 months ago
- 1 answers
Mohd Talha 4 years, 10 months ago
Posted by Prathiksha Ramu 4 years, 10 months ago
- 2 answers
Yogita Ingle 4 years, 10 months ago
1) A liquid exerts pressure on the walls of its container.
2) A liquid exerts equal pressure at the same depth. The formation of fountains of water from the leaking pipes of water supply pipeline tells us that water exerts pressure on the walls of its container.
Mohd Talha 4 years, 10 months ago
Posted by Drashti Thakkar 4 years, 10 months ago
- 1 answers
Gaurav Seth 4 years, 10 months ago
Budding
Bud means a small outgrowth from the body of an organism.When a bud is formed on the body of an organism, then the nucleus divides into two and one of the nuclei passes into the bud.
In budding, a small part of the body of the parent organism grows out as a bud which then detaches and becomes a new organism.
For Ex:Hydra, sea-anemones, sponges and corals reproduce by the method of budding.
In hydra, first a small outgrowth called bud is formed on the side of its body by the repeated divisions of its cells.This bud then grows gradually to form a small hydra by developing a mouth and tentacles.And finally the tiny new hydra detaches itself from the body of parent hydra and lives as a separate organism.the parent hydra has produced a new hydra.The bud formed in a hydra is not a single cell.It is a group of cells.
Posted by Ishita Sagar 4 years, 10 months ago
- 2 answers
Drashti Thakkar 4 years, 10 months ago
..... ......9Standar 4 years, 10 months ago
Posted by Rahul Sawin 4 years, 10 months ago
- 4 answers
Anchal Kumar Yadav 4 years, 10 months ago
Yogita Ingle 4 years, 10 months ago
(a) Preparation of soil: Soil is prepared before sowing the seeds. The soil is loosened to increase the absorption of water and manures. Loosening of soil particles adds humus and nutrients in the soil that increases crop yields. Tilling or loosening the soil is done by ploughs which are pulled by a pair of bulls. Tractor driven cultivators are also used to loosen the soil.
(b) Sowing: After preparation of soil it is ready for sowing of seeds. The healthy and clean seeds should be selected. The sowing is done by seed drills or funnel shaped tools. Seed drills are the modern instruments which sow the seeds at proper depth and proper distance.
(c) Weeding: The unwanted plants in the crops are called weeds. These weeds absorb the nutrients from the soil. So it is necessary to remove them. Weeds are either removed manually or by mechanical tools. The process of removal of weeds is called weeding. Some chemicals like 2, 4-D are also used to kill the weeds.
(d) Threshing: Separation of grains from the chaff is called threshing. When the crop is harvested, it is cut along with the stalks. They are then separated and the grains are removed. Winnowing machine is used to separate grains from chaff.
Posted by Smriti Singh 4 years, 10 months ago
- 2 answers
Yogita Ingle 4 years, 10 months ago
- Sound is a form of energy that travels in the form of vibrations through the air or any another medium.
Posted by Smriti Singh 4 years, 10 months ago
- 2 answers
Meghna Thapar 4 years, 10 months ago
Sound is produced when something vibrates. The vibrating body causes the medium (water, air, etc.) around it to vibrate. Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.
There are two types of sound, Audible and Inaudible.
Inaudible sounds are sounds that the human ear cannot detect. The human ear hears frequencies between 20 Hz and 20 KHz.
Sounds that are below 20 Hz frequency are called Infrasonic Sounds. Elephants use Infrasonic sounds to communicate with herds 100s of kms away.
Sounds that are above 20 KHz frequency are called Ultrasonic Sounds. Dogs, Bats can hear high frequency sounds.
Posted by Tenzin Tseyang 4 years, 10 months ago
- 1 answers
Yogita Ingle 4 years, 10 months ago
• Young people should not get drunk and create nuisance in public.
It is a well known fact that alcohol not only affects health but also destroys families.
• They should not throw garbage or trash on the street.
It creates lots of problems for the people living in neighborhood and also becomes a breeding ground for the disease.
Posted by Keshava S 4 years, 10 months ago
- 1 answers
Yogita Ingle 4 years, 10 months ago
Winnowing is an agricultural method for separating grain from the chaff. It is also used to remove hay and chaff or other pests from stored grain. Threshing (the loosening of grain or seeds from the husks and straw) is the step in the chaff-removal process that comes before winnowing.
In the simplest form, it involves throwing the mixture into the air so that the wind blows away the lighter chaff. The heavier grains fall back down for recovery. This method is also called "wind-grading".
Posted by Prachi Saxena 4 years, 10 months ago
- 2 answers
Posted by Prachi Saxena 4 years, 10 months ago
- 3 answers
Gaurav Seth 4 years, 10 months ago
Some boys and girls have disproportionate body parts during adolescence because of the different growth rate of different body parts. The growth rate of arms and legs is higher than the other parts. The other parts soon catch up resulting in a proportionate body.
Posted by Muskan Rawandhe 4 years, 10 months ago
- 3 answers
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Yuvraj Soni 4 years, 9 months ago
1Thank You