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Yogita Ingle 5 years, 10 months ago
In order to take a safe turn, the cyclist has to bend a little from his vertical position. In this case, a component of the reaction provides the required centripetal force.
If q is angle made by the cyclist with the vertical then
In actual practice, the value of q is slightly less because the force of friction also contributes towards the centripetal force.
Posted by Kavi Sharma 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The Sulphide ion test is the most common test that is used for checking any bacterial contamination in drinking water. Since even a small concentration of sulphide ion (0.01 mg/L) in the water makes it unfit for culture and consumption, it is important to check and test the presence of sulphide ion because it is very poisonous.
The simple and most common sulphide test is as follows:-
The water which has to be tested is filled in a test tube and a strip of H₂S is placed inside the tube. This test tube is then incubated for up to 14 - 16 hours at a temperature of 35°C. In case the strip turns into black, it indicates the presence of sulphide ion in the water and therefore, it is considered unsafe and unfit for consumption.
Kavi Sharma 5 years, 10 months ago
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Plant nutrition is the study of the chemical elements and compounds necessary for plant growth, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite. This is in accordance with Justus von Liebig's law of the minimum. The total essential plant nutrients include seventeen different elements: carbon, oxygen and hydrogen which are absorbed from the air, whereas other nutrients including nitrogen are typically obtained from the soil (exceptions include some parasitic or carnivorous plants).
Plants must obtain the following mineral nutrients from their growing medium:-
the macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sulfur (S), magnesium (Mg), carbon (C), oxygen (O), hydrogen (H)
the micronutrients (or trace minerals): iron (Fe), boron (B), chlorine (Cl), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni)
These elements stay beneath soil as salts, so plants consume these elements as ions. The macronutrients are consumed in larger quantities; hydrogen, oxygen, nitrogen and carbon contribute to over 95% of a plant's entire biomass on a dry matter weight basis. Micronutrients are present in plant tissue in quantities measured in parts per million, ranging from 0.1 to 200 ppm, or less than 0.02% dry weight.
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Yogita Ingle 5 years, 10 months ago
The difference between the specific heat of a gas at constant pressure( cp ) and its specific heat at constant( cv ) volume is equal to the universal gas constant(R) divided by the molecular weight(M) of the gas. i.e. cp−cv = R/M .This relation is known as Mayer's formula
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Yogita Ingle 5 years, 10 months ago
Mrs Pearson is loving mother and a gentle wife. She works hard to keep her husband and children happy. She works all hours of the day and all days of. She does her best to keep them happy. She is a simple hearted woman. But she is gentle to a fault. She does feel that her husband and children are thoughtless.
Mrs Fitzgerald feels strongly that the woman should be the mistress of her own house. She should be the boss of her family . She should refuse to be led by nose. She is very intelligent also . She knows how to cure people of their waywardness. She also helps Mrs Pearson to control her husband and children.
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Yogita Ingle 5 years, 10 months ago
The Unique Features of the Indian Constitution:
1. The Lengthiest Constitution: Indian Constitution is a written constitution. It is the lengthiest constitution in the world. It has 395 articles and schedules (now 12). It is a book of more than 250 pages.
2. The Fundamental Rights and the Directive Principles of State Policies: In our Constitution Indian citizens have been provided with six fundamental rights. And for the establishment of social and economic democracy and for the welfare of its citizens, some directives have been given to the central and the state governments.
3. A unique blend of Unitary and Federal Governments: According to the constitution, India has been declared federal and it looks federal but it has the unitary bias. Thus Indian constitution is federal in form but unitary in spirit.
4. The Fundamental Duties: By the 42nd Amendment in 1976, 10 fundamental duties have been also incorporated in the Indian Constitution.
5. Blend of Flexibility and Rigidity: The Indian Constitution is a blend of flexibility and rigidity. Some of the articles as change in the name of any state or in the boundaries, etc. are amended by a simple majority of the Parliament.
Some articles are amended by 2/3 majority of the members of the House present but the clear majority of the total members of the Parliament. But some important articles of the Constitution can be amended by only two-third majority of those present and voting in each House and the resolution has to be ratified by at-least half of the state legislatures.
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