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Yogita Ingle 7 years, 6 months ago
| Electrons | Protons | Neutron |
| 1) Electrons are Negatively charged particles 2) Electrons are present in outer shells with in an atom and revolve around the nucleus in well-defined orbits or discrete orbits 3) The mass of an electron is about 1/ 2000 times the mass of an hydrogen atom. 4)A electron is represented as 'e-' |
1) Protons are Positively charged particles. 2) Protons are present in the nucleus of all atoms Number of protons determines the atomic number of an element 3) The mass of a proton is taken as one unit and equals to neutron. 4) A proton is represented as 'p+' |
1) Neutrons do not carry any charge and are neutral. 2) Neutrons are present in the nucleus of all atoms, except hydrogen 3) The mass of a neutron is taken as one unit and equals to that of proton. 4) A neutron is represented as 'n' |
Posted by Sufiyan Siddque 7 years, 6 months ago
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Posted by Mr Naman त्यागी 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
If the net external force acting on a system of bodies is zero, then the momentum of the system remains constant. This is the basic law of conservation of linear momentum.
Example: One of the applications of conservation of momentum is the launching of rockets. The rocket fuel burns are pushed the exhaust gases downwards, and due to this, the rocket gets pushed upwards. Motorboats also work on the same principle, it pushes the water backward, and gets pushed forwards in reaction to conserve momentum.
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Yogita Ingle 7 years, 6 months ago
Rubella, causes fever, sore throat, rash, headache, and red, itchy eyes. If a woman gets rubella while she is pregnant, she could have a miscarriage or her baby could be born with serious birth defects.
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Yogita Ingle 7 years, 6 months ago
Cathode ray is a collection of electron beam emerging from cathode end and strike anode plate. It is therefore negatively charged whose e/m ration is constant for all the gases therefore called universal constant. The mass of cathode ray is 1/1837 times the mass of hydrogen atom.
Anode ray is a collection of proton which is also known as canal rays. It emerges from anode and strike cathode plate. It is therefore positively charges whose e/m ratio is variable for different gases. The mass of proton is 1837 times the mass of electron.
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Yogita Ingle 7 years, 6 months ago
- Law of conservation of linear momentum is a extremely important consequence of Newton's third law of motion in combination with the second law of motion.
- According to law of conservation of momentum
When two or more bodies acts upon each other their total momentum remains constant provided no external forces are acting - So, Momentum is never created or destroyed.
Posted by Dhananjay Singh 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
SER - It stands for Smooth Endoplasmic Reticulum.
It helps in the synthesis of Lipids for membrane biogenesis.
Posted by Karan Mandal 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
Soil is a mixture of rock particles, minerals, decayed organic material, air, and water. The formation of soil happens over a very long period of time and is majorly formed by the weathering of rock. Weathering in turn is the breaking down of huge pieces of rocks into smaller pieces by the action of natural forces, such as water, heat, glaciers, wind and roots of plants, etc.
Posted by Neeta Zanwar 7 years, 6 months ago
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Yogita Ingle 7 years, 6 months ago
| It is a colorless fluid. | It is a reddish colored fluid. |
| It is part of the lymphatic system | It is part of the circulatory system |
| It helps in body defense and is a part of the immune system. | It is associated with the circulation of oxygen and carbon dioxide, nutrients hormones, waste products etc. |
| It contains plasma and a lesser number of WBCs and platelets. | It contains plasma, RBCs, WBCs, and platelets. |
| Carries less amount oxygen and digested food. | Carries more amount oxygen and digested food. |
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