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Ask QuestionPosted by Rajpal Kaur 6 years, 1 month ago
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Posted by Rajpal Kaur 6 years, 1 month ago
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Yogita Ingle 4 years, 11 months ago
A magnetic compass is a simple device used for finding direction. It consists of a magnetic needle that can turn freely about its centre. The needle is encased in a box with a transparent top. Directions are either printed on a card placed below the needle or marked on top of the box. Usually, the north pole of the needle is painted red or blue, or is in the shape of an arrowhead. When kept away from magnetic materials, the north pole of the needle points towards the geographical north. To find directions, the box is turned till the north mark on the card falls exactly below the north pole of the needle. In this position, the other directions are also indicated by the card.
Posted by Prem Prakash 6 years, 1 month ago
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Posted by Snigdha Shooburt 6 years, 1 month ago
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Posted by Ramla Basavani 6 years, 1 month ago
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Sanskaar Kushwaha 6 years, 1 month ago
Yogita Ingle 6 years, 1 month ago
The word ‘Data’ means collection of information in the form of numerical figures, or a set of given facts. A data is a collection of numbers gathered to give some information. Visual representation of data will help us to understand it better and remember the facts easily.
Example:
- The marks obtained by 10 students of a class in a test are:
76, 83, 95, 100, 56, 32, 80, 67, 75, 46
Posted by Sneha Valvi 6 years, 1 month ago
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Ananya Mishra 6 years, 1 month ago
Posted by Chaudhary Shrey 6 years, 1 month ago
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Posted by Dushyant Bhakhar 6 years, 1 month ago
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Posted by Yash Yash 6 years, 1 month ago
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M. Nandan 6 years, 1 month ago
Yogita Ingle 6 years, 1 month ago
Gramabhojaka was the village headman and often the largest landowner. He used the slaves and hired workers to cultivate his lands. He collected taxes from the villagers on behalf of the king. He was a powerful village personnel, sometimes he functioned as a judge and sometimes as a policeman.
Posted by Bhaskar Devaraj 6 years, 1 month ago
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Posted by Rakesh Yadav 6 years, 1 month ago
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Posted by Arvind Makvana 6 years, 1 month ago
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Posted by Utsav Tiwari 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
According to Greek legend magnetism was first discovered by a shepherd named Megnes, who lived in Megnesia, Greece. Megnes was herding his sheep through the mountains. Suddenly he noticed the ferrule of his stick and nails in his sandals got stuck to a rock. The iron in his stick and nails had become attracted to the magnetic rock. The stone was named as magnetite, after the name of the shepherd or the country it was found in. It was also known as loadstone because of its attractive properties.
Posted by Mithelesh Kumar 6 years, 1 month ago
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Posted by Bhavani Pradeep 6 years, 1 month ago
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Posted by Shweta Anand 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Wildlife Week is celebrated every year in India between October 1 and 8. The annual theme of the campaign is to promote the preservation of fauna – i.e. animal life.
Posted by Shiba Prasad Mallick 6 years, 1 month ago
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Noel Jijo 6 years, 1 month ago
Posted by Sanjana Rurkiwal 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Below are a certain conditions where a magnet may get damaged:
- Magnets lose magnetism when they are heated, hammered or dropped from some height.
- Magnets become weak if they are not stored properly.
Magnets should be stored as mentioned below:
- Magnets should be kept in pairs with their unlike poles on the same side. They must be separated by a piece of wood while two pieces of soft iron should be placed across their ends.
- For horse-shoe magnet, one should keep a piece of iron across the poles.
Posted by Sanskaar Kushwaha 6 years, 1 month ago
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Priyanshu Shil 6 years, 1 month ago
Yogita Ingle 6 years, 1 month ago
Proportional reasoning involves the ability to compare and produce equal ratios. A common use of proportions occurs when making or using maps and scale models.
Posted by Sanskaar Kushwaha 6 years, 1 month ago
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Posted by Sanskaar Kushwaha 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Wilhelm Roentgen, a German professor of physics, was the first person to discover electromagnetic radiation in a wavelength range commonly known as X-rays today.
X-rays are a form of electromagnetic radiations which emitted when matter is bombarded with fast electrons.
Posted by Sanskaar Kushwaha 6 years, 1 month ago
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Yogita Ingle 6 years, 1 month ago
Mucus is a slippery secretion produced by mucous membranes. Mucous fluid is typically produced from cells found in mucous glands. Mucous cells secrete products that are rich in glycoproteins and water. Mucous fluid may also originate from mixed glands, which contain both serous and mucous cells. It is a viscous colloid containing antiseptic enzymes,immunoglobulins, inorganic salts, proteins such as lactoferrin, and glycoproteins known as mucins that are produced by globlet cells in the mucous membranes and submucosal glands. This mucus serves to protect epithelial cell in the respiratory, gastrointestinal, urinogenital, visual and auditory systems in mammals. A major function of this mucus is to protect against infectious agents such as fungi, bacteria and viruses. The average human body produces about a litre of mucus per day.
Posted by Vallabh Singh 6 years, 1 month ago
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Chirag Malik 6 years, 1 month ago
Yogita Ingle 6 years, 1 month ago
A switch is a simple device that either breaks the circuit or completes it.
When switch is in ‘OFF’ position, then the circuit is open i.e. no current flows through the circuit and when switch is in ‘ON’ position, then the circuit is complete i.e. current flows through the circuit.
Posted by Arya Poudel 6 years, 1 month ago
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Meghna Thapar 6 years ago
Posted by Krishan Lal 6 years, 1 month ago
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Meghna Thapar 6 years ago
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