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Yogita Ingle 5 years, 6 months ago
The linear momentum of a body is defined as the product of its mass and linear velocity. If m is the mass of the body and v is the velocity, then
Linear momentu, p = mv
The angular momentum is the rotational analogy to linear momentum.
Angular momentum is equal to the product of the moment of inertia and angular velocity Iω
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Yogita Ingle 5 years, 6 months ago
Napoleon introduced the following changes to make the administrative system more efficient in the areas ruled by him:
- He established civil code in 1804 also known as the Napoleonic Code. It did away with all privileges based on birth. It established equality before the law and secured the right to property.
- He simplified administrative divisions, the abolished feudal system, and freed peasants from serfdom and manorial dues.
- In towns too, guild systems were removed.
- Transport and communication systems were improved.
- Peasants, artisans, businessmen and workers enjoyed the newfound freedom.
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Yogita Ingle 5 years, 6 months ago
Decomposition reaction is a type of reaction in which the compound breaks into two or more products.
Examples of decomposition reaction is:
Decomposition of baking soda.
Decomposition of hydrogen peroxide.
Decomposition of carbonic acid.
When decomposition takes place through heat energy, it is called as thermal decomposition.
Illustration for decomposition by heating process:
When calcium carbonate is heated, carbon dioxide is evaporated with calcium oxide.
When water is heated, it produces monatomic oxygen and hydrogen.
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Yogita Ingle 5 years, 6 months ago
Washing soda is a whitish, odourless powder. Its chemical formula is Na2CO3 and is better known as sodium carbonate. It is hygroscopic in nature that is, it absorbs moisture from the air. It is highly soluble in water and forms strongly alkaline water solution.
Washing soda is synthesized through Solvay’s process. Solvay’s process involves the reaction of sodium chloride, ammonia and carbon dioxide in water. Carbon dioxide involved is produced through calcium carbonate and the calcium oxide left is used in recovering ammonia from ammonium chloride.
At first, sodium bicarbonate is obtained which is then converted to sodium carbonate on heating. Finally, washing soda is produced by recrystallization of sodium carbonate.
- NaCl + NH3 + CO2 + H2O → NaHCO3 + NH4Cl
- 2 NaHCO3 → Na2CO3 + H2O + CO2
- Na2CO3 + 10H2O → Na2CO3.10H2O
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Yogita Ingle 5 years, 6 months ago
Marianne and Germania are allegories of France and Germany respectively...
Allegories is a an abstract idea which is expressed through a person or thing.
Nations were portrayed as female figures, which we call allegories
Marianne :
Marainne is an allegory of France. " Marainne " is a popular Christian name , which underlined the idea of a people's nation. Her characterstics were drawn from those of liberty and the republic - the red cap, the tri - colour, the cokade.
Statues of Marainne were erected in the public squares to remind the public of the national symbol of unity and to persuade them identify with it.
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Yogita Ingle 5 years, 6 months ago
Giuseppe Garibaldi (1807-82) was a famous Italian freedom fighter. He managed a large number of volunteers apart from regular troops.
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The biggest difference between the two is that the nervous system uses electrical impulses to send signals through neurones, whereas the hormonal system uses chemical messengers transported into blood plasma to target cells. The main difference between chemical synapse and electrical synapse is that in a chemical synapse, the nerve impulse passes chemically by means of neurotransmitters whereas an electrical synapse is connected through channel proteins. Nerve impulses pass through the membrane of the axon as an electrical signal. A chemical synapse is a gap between two neurons where information passes chemically, in the form of neurotransmitter molecules. An electrical synapse is a gap which has channel proteins connecting the two neurons, so the electrical signal can travel straight over the synapse.
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Lucifer ? Morningstar? 5 years, 6 months ago
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