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Hermoine Granger 6 years, 3 months ago
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Hermoine Granger 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Relation between Force and Pressure:
If the Force’ F’ is applied perpendicularly on a surface having area ‘A’ ,
then the force applied per area is = F/A
by the definition it is the pressure on that surface
so,pressure,P = Force(F)/Area(A)
P = F/A
FORCE = PRESSURE ×AREA
Posted by Goggi Sudhakar Yadav 6 years, 3 months ago
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Harsh Mishra 6 years, 3 months ago
Cube of 20 or (20)3 = 20 x 20 x 20 = (2 x 2 =4 and 4 x 2 = 8 and then write three zeroes after it since we have to do cube of the given number) ........
Therefore, (20)3 = 8000 = 8 x 103
Posted by Garima Singh 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Following are three arguements against democracy are:
- Change in leaders from time to time (elections) can bring about instability in the government.
- There is a consumption of excessive time for taking decisions because of consultation to many people, which leads to delays.
- Many a times elected leaders are only bothered about the power and politics making them insentive to people's requirement.
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Meghna Thapar 5 years, 6 months ago
The term megadiverse country refers to any one of a group of nations that harbor the majority of Earth's species and high numbers of endemic species. Conservation International identified 17 megadiverse countries in 1998. Many of them are located in, or partially in, tropical or subtropical regions. Megadiversity Countries is a term used to refer to the world's top biodiversity-rich countries. This country-focused method raises national awareness for biodiversity conservation in nations with high biological diversity, with many species unique to a specific country. The group of megadiversity centres incorporates 12 countries: Mexico, Colombia, Ecuador, Peru, Brazil, Zaire, Madagascar, China, India, Malaysia, Indonesia and Australia. Others increase the list to more than 17, adding Papua New Guinea, South Africa, USA, Congo, Philippines and Venezuela.
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Sia ? 6 years, 3 months ago
Tensile Strength is the resistance of a material to breaking under tension.
Hermoine Granger 6 years, 3 months ago
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Meghna Thapar 5 years, 10 months ago
Water is the most common fire extinguisher. But it works only when things like wood and paper are on fire. If electrical equipment is on fire, water may conduct electricity and cause fire. Water is also not suitable for fires involving oil and petrol.
Carbon dioxide can be stored at high pressure as a liquid in cylinders. When CO2 is released from the cylinder, it expands enormously in volume and cools down. So, it not only forms a blanket around the fire but also brings down the temperature of the fuel. That is why it is an excellent fire extinguisher.
Posted by Simarjit Kaur 6 years, 3 months ago
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Sia ? 6 years, 3 months ago
Harmful effects of burning fossil fuels are as following:
(i) Burning of fossil fuels cause air pollution.
(ii) They also cause global warming because they produce greenhouse gas like carbon dioxide on burning.
(iii) They are exhaustible resources, and will be finished in the near future.
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Sia ? 6 years, 3 months ago
Chest X-rays produce images of your heart, lungs, blood vessels, airways, and the bones of your chest and spine. Chest X-rays can also reveal fluid in or around your lungs or air surrounding a lung.
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