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Meghna Thapar 5 years, 8 months ago
- Conductors conduct electrical current very easily because of their free electrons.
- Insulators oppose electrical current and make poor conductors.
- Some common conductors are copper, aluminum, gold, and silver.
- Some common insulators are glass, air, plastic, rubber, and wood.
The glass is an insulator, so when electrons are exchanged between it and the cloth you are rubbing it with, the charges stay put on the glass. But with an iron rod, the charges distribute around the rod. Since you are touching it, the charges also distribute around you. So this drains off the charge.
Posted by Vishu Bhedhav 5 years, 8 months ago
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Meghna Thapar 5 years, 8 months ago
The term 'storm and stress' was coined by G. Stanley Hall in Adolescence, written in 1904. Hall used this term because he viewed adolescence as a period of inevitable turmoil that takes place during the transition from childhood to adulthood.
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Posted by Aryan Sharma 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Gauss’s Law
According to Gauss’s law, the total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The total electric flux through a closed surface is zero if no charge is enclosed by the surface.
- Gauss’s law is true for any closed surface, no matter what its shape or size.
- The term q on the right side of Gauss’s lawincludes the sum of all charges enclosed by the surface. The charges may be located anywhere inside the surface.
- The surface that we choose for the application of Gauss’s law is called the Gaussian surface. The Gaussian surface can pass through a continuous charge distribution.
- Gauss’s law is useful for the calculation of the electrostatic field for a symmetric system.
- Gauss’s law is based on the inverse square dependence on distance contained in the Coulomb’s law. Any violation of Gauss’s law will indicate departure from the inverse square law.
Posted by Lakshmi R 5 years, 8 months ago
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Meghna Thapar 5 years, 8 months ago
Our economy had been a victim of enormous exploitation. Our natural resources, iron ores, gold mines, wealth and manpower was subject to intense exploitation. Due to these atrocities, the Indian economy on the eve of independence showed poor/low economic growth.
Posted by Purnima Rana 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
- X-Rays are produced by bombarding a metal target by high energy electrons.
- It is very important diagnostic tool.
- X-Rays have lesser wavelengths as compared to all other waves.
- Because of this X-Rays can easily penetrate inside the skin (low density material). It either gets reflected or absorbed by the high density material (like bone).
- In any X-Ray, bones look darker and lighter area is skin.
- It is also used for cancer treatment.
- In cancer there is unwanted growth of the cells.
- In order to treat cancer the abnormal growth of cells should be stopped.
- The X-Rays have the ability to damage the living tissue.
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Meghna Thapar 5 years, 8 months ago
Biological value (BV) is a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism's body. It captures how readily the digested protein can be used in protein synthesis in the cells of the organism. Proteins are the major source of nitrogen in food.
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Yogita Ingle 5 years, 8 months ago
Nutrients are the compounds in food that provide us with energy that facilitates repair and growth and helps to carry out different life processes.
These nutrients are divided into two categories:
- Macronutrients, which are required by the body in large amounts.
- Micronutrients, which are required by the body in small amounts.
Posted by Anjanee Singh 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Harappan civilization:
The subsistence strategies of Harappan people included wide range of diet which included both plants and animals produce.
The Harappan Civilization or the Indus Valley Civilization is one of most ancient civilizations of world that existed around 2500 to 1700 BC along the banks of rivers Indus and Saraswati. Harappa was first site to be discovered and hence given the name.
Since, it was present on banks of two mighty rivers, most of their diet came from agriculture, but it also included animal products such as fish which can easily be caught from the river.
The archaeologist have found charred remains of grains such as wheat, barley, and millet. They also found the charred remains of bones of some animals like wild boar, deer, some wild birds which were probably used for eating purposes. In this way they sustained themselves.
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Sneha Debbarman 5 years, 8 months ago
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