Showing posts with label learn physics. Show all posts
Showing posts with label learn physics. Show all posts
Insect pest control
Expand EDUCATION Insects are harmful for crops plants. Insects attack the crops in three ways:- Chewing insect sucking insect Internal feeders Chewing insects …
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Weed controls
Expand EDUCATION Weeds are unwanted plants in crops field. It is competitor for crops plant. It have faster growth than crop plants. It use the minerals and wa…
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Nature of Physical law
Expand EDUCATION Law of physics is same everywhere in the universe. for example law of gravitation is same everywhere in the universe. at moon surface the acc…
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Fundamental forces in nature
Expand EDUCATION There are 4 fundamental forces in nature:- Gravitational Force Electromagnetic force Strong nuclear force Weak nuclear force Gravitational for…
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Chapter 1 Physical World
Expand EDUCATION What is physics? Physics is the study of nature and its laws. In nature every things happens have a unique law or unique pattern or system we…
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CROP VARIETY IMPROVEMENT
Farmers desire high yields and good quality of grains from the farming. High yields and good quality of grains can be obtained if the plants and the process of…
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SIZE OF THE NUCLEUS
It is experimentally found that the size(volume) of nucleus is directly proportional to the mass number. V ∝A V =R'A 4/3 Ï€ R…
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DISCOVERY OF NEUTRON
The neutron is discovered by James Chadwick in 1932. There are 3 isotopes of hydrogen:- Hydrogen Deuterium Tritium After the alpha particle scattering experime…
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NUCLEI
Rutherford alfa particle scattering gives ideas that the positive charge and all the mass of an atom is densely concentrated at central of the atom in very sma…
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