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Anuj Bansal 6 years, 4 months ago
Posted by Manan Preet 6 years, 4 months ago
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Posted by Shiv Patel 6 years, 4 months ago
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Rahul 2525 6 years, 4 months ago
Anita Phappagire 6 years, 4 months ago
Posted by Shakil Ahamed 6 years, 4 months ago
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Posted by Garima Jain 6 years, 4 months ago
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Meghna Thapar 5 years, 5 months ago
If the time taken by one pendulum to reach its mean position from the extreme position is 0.25 seconds then a pendulum will move to two extreme positions from one mean position only.
That will means that the total time period = 2 * 0.25 = 0.50 seconds.
Since, a pendulum will move from mean to the extreme, extreme to mean, mean to the extreme and again extreme to mean, it will cover 2 cycles.
Hence, 2 * .50 = 1
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Posted by Ishaan Srivastava 6 years, 4 months ago
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Manohar Rao G 6 years, 4 months ago
Posted by Ishaan Srivastava 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
- He took various measures to stregthen his army. He was the first Sultan of Delhi who laid the foundation of a permanent standing army
- He was the first Muslim sultan of Delhi who not only conquered most of the North Indian states but also sent an expedition to south under Malik Kafur. The kingdoms of Dwar Samudra, Warangal, Devagiri and Madurai were defeated. These kingdoms accepted the suzeranity of Alauddin and agreed to pay regular annual tribute.
- He built new forts at strategic locations and repaired the old ones.
Posted by Mahesh Hunashikatti 6 years, 4 months ago
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Posted by Ishaan Srivastava 6 years, 4 months ago
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Rahul 2525 6 years, 4 months ago
Satish Kumar 6 years, 4 months ago
Yogita Ingle 6 years, 4 months ago
The four stages in the preparation of a manuscript are
- Preparing the paper.
- Writing the text.
- Melting gold to highlight important words and passages.
- Preparing the binding.
Posted by Shahina Hami 6 years, 4 months ago
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Posted by B. L Solanki 6 years, 4 months ago
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Meghna Thapar 5 years, 10 months ago
Many people in our country still do not have an access to proper sanitation facilities. They defecate in the open, on dry riverbeds, on railway tracks, near fields and many a time directly in water.
Poor sanitation and contaminated drinking water is the cause of a large number of diseases. Untreated human excreta is a health hazard and cause water pollution and soil pollution. When both the surface water and groundwater get polluted it becomes the most common route for water borne diseases like cholera, typhoid, polio, meningitis, hepatitis and dysentery.
Posted by Shashwat Lingayat 6 years, 4 months ago
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Posted by Parth Kamble 6 years, 4 months ago
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Posted by Rushikesh Shelke 6 years, 4 months ago
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Meghna Thapar 5 years, 10 months ago
The process in which water passes down slowly through the soil is called percolation of water.
Posted by Prachi Kulkarni 6 years, 4 months ago
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Posted by Prachi Kulkarni 6 years, 4 months ago
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Posted by Unnati Sarda 6 years, 4 months ago
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Tanya Gupta 6 years, 4 months ago
Rahul 2525 6 years, 4 months ago
Yogita Ingle 6 years, 4 months ago
Earth absorbs about 75 % of the total solar energy reaching its surface thereby increasing its temperature. Some of this energy is radiated back into the atmosphere. The gases present in the atmosphere for example ozone, methane, carbon dioxide, water vapor and chlorofluorocarbons are called greenhouse gases, they absorb some heat thereby restricting the heat to escape our atmosphere. These gases add to the heating of the atmosphere and result in global warming.
Posted by Brijbhushan Patel 6 years, 4 months ago
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Posted by Palak Dung 6 years, 4 months ago
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Yogita Ingle 6 years, 4 months ago
Physical Change: Change in which only physical properties of a substance change and no new substance is formed is called Physical Change. Most of the physical changes are reversible, this means we can get the substance back even after the change.
Examples: Folding of a paper sheet: A paper can be folded or unfolded, and hence it is an example of physical change. Moreover, no new substance is formed in this process, so it is a physical change.
Chemical changes: Changes in which chemical properties of substance change and a new substance is formed are called chemical changes. Some of the chemical changes are irreversible. Even in case of reversible changes in which chemical properties of substance change and a new substance is formed are called chemical changes. Some of the chemical changes are irreversible.
Example: Burning of wax is chemical change
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Rahul 2525 6 years, 4 months ago
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