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    • Posted by Harshit Tiwari 1 year, 11 months ago

    CBSE > Class 12 > English Core
    • 0 answers
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    • Posted by Ashwani Kumar 1 year, 11 months ago

    CBSE > Class 09 > Information Technology (402)
    • 0 answers
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    • Posted by Pushkar Roy 1 year, 11 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Krish Agrawal 1 year, 11 months ago

    The integration of cos^3(x) can be solved using a trigonometric identity. Here's the integration step by step: ∫cos^3(x) dx = ∫(cos^2(x) * cos(x)) dx Now, you can use the identity cos^2(x) = 1 - sin^2(x): = ∫(1 - sin^2(x)) * cos(x) dx = ∫cos(x) dx - ∫(sin^2(x) * cos(x)) dx The first integral, ∫cos(x) dx, is straightforward and equals sin(x): = sin(x) - ∫(sin^2(x) * cos(x)) dx Now, for the remaining integral, you can use a u-substitution. Let u = sin(x), so du = cos(x) dx: = sin(x) - ∫(u^2 * du) Now, integrate u^2 with respect to u: = sin(x) - ∫u^2 du = sin(x) - (u^3 / 3) + C Now, replace u with sin(x): = sin(x) - (sin^3(x) / 3) + C So, the integral of cos^3(x) is: ∫cos^3(x) dx = sin(x) - (sin^3(x) / 3) + C, where C is the constant of integration.

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    • Posted by Shashi Vardhan 1 year, 11 months ago

    CBSE > Class 10 > Mathematics
    • 0 answers
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    • Posted by Shashi Vardhan 1 year, 11 months ago

    CBSE > Class 10 > Science
    • 0 answers
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    • Posted by Subhan Hasan 1 year, 11 months ago

    CBSE > Class 10 > English Language and Literature
    • 0 answers
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    • Posted by Raghvi Dubey 1 year, 11 months ago

    CBSE > Class 08 > Science
    • 2 answers

    J. P Tiwari 1 year, 11 months ago

    Yes

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    Paramjit Dey 1 year, 11 months ago

    CBSE Class 08 Science Revision Notes Chapter – 18 Pollution of Air and Water Pollution: An undesirable change in the physical, chemical or biological characteristics of air, water and land that may be harmful to human life and other animals, living conditions, industrial processes and cultural assets. Pollutants: The agents that pollute our environment are called pollutants. Pollutants are the substances which contaminate air, water and land. For eg. smoke ,dust,fog and gases like sulphur dioxide and nitrogen dioxide. Air pollution is the contamination of air by impurities which may have a harmful impact on the living organisms and the non-living components. Sources of Air Pollution: Natural Sources: Smoke and dust arising from forest fires or volcanic eruptions. Methane gas arising from decaying organic matter. Man-made Sources: Exhaust gases from factories, power plants and automobiles. Carbon monoxide, nitrogen oxides, carbon dioxide, methane and sulphur dioxide are the major pollutants of air. Smog is a mix in the air of smoke and chemicals with fog. The chemical components of smog can include ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide. Smog can trigger breathing difficulties like asthma and coughing. Steps to prevent air pollution: • Use of fuels like CNG and unleaded petrol in automobiles. • Switching to alternative fuels, like solar energy, hydropower and wind energy. • Planting trees. • Travelling to school on a bicycle or on public transport or car pooling. • Avoiding the burning of leaves, trash and vegetable matter. • Restricting cigarette smoking. Increasing levels of greenhouse gases like CO2 ,CFC (Chloroflorocarbon) are leading to global warming. Excessive use of CFCs damages ozone layer which protects the earth from harmful UV rays emitted by the sun. Greenhouse Effect and Global Warming: The sun's rays warm the earth's surface. A part of the radiation that falls on the earth is absorbed by it and a part is reflected back into space. A part of the reflected radiation is trapped by the atmosphere due to presence of gases like water vapor, carbon dioxide, methane, nitrous oxide etc known as greenhouse gases. This is known as greenhouse effect. The trapped radiations further warm the earth and have adverse effects such as melting of glaciers and increasing sea levels. This phenomenon is known as global warming. Water pollution is the contamination of water by objectionable and harmful substances such as sewage, toxic chemicals, silt, etc. Sewage, agricultural chemicals and industrial waste are some of the major contaminants of water. Water which is purified and fit for drinking is known as potable water. Water is a precious natural resource. We must learn to conserve it.

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    • Posted by Swaleha Malik🦋💗 1 year, 11 months ago

    CBSE > Class 10 > Science
    • 0 answers
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    • Posted by Swaleha Malik🦋💗 1 year, 11 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Swati S 1 year, 11 months ago

    Continuity of species and brings variation that causes evolution.

    1Thank You

    Sumit Yadav 1 year, 11 months ago

    Variation

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    • Posted by Manisha Devasi 1 year, 11 months ago

    CBSE > Class 11 > History
    • 1 answers

    Preeti Singh 1 year, 9 months ago

    1.There were vast mountainous area . 2.Rivers are the source of agriculture. 3.fish was the source of animal at that time. 4.dairy milk ,animal husbandary were source of income.

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    • Posted by Daksh Tilwani 1 year, 11 months ago

    CBSE > Class 12 > Accountancy
    • 0 answers
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    • Posted by Vanshika Sharma 1 year, 11 months ago

    CBSE > Class 09 > संस्कृत (शेमुषी)
    • 1 answers

    Yaad Ram 1 year, 10 months ago

    CH 1

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    • Posted by Goutam Singh Chouhan 1 year, 11 months ago

    CBSE > Class 12 > Physics
    • 3 answers

    Priyanshu Singh 1 year, 11 months ago

    Munot upon 4pis idl sintetaupon r square

    1Thank You

    Manish Yadav 1 year, 11 months ago

    Idlsintheta by r square

    0Thank You

    Krish Agrawal 1 year, 11 months ago

    dB = (μ₀ / 4π) * (Idl × r) / r³

    4Thank You

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    • Posted by Aditi Sharma 1 year, 11 months ago

    CBSE > Class 09 > Social Science
    • 0 answers
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    • Posted by Netik Verma 1 year, 11 months ago

    CBSE > Class 08 > Sanskrit
    • 1 answers

    Saipriya Mishra 1 year, 11 months ago

    2

    10Thank You

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    • Posted by Gaurav Jain 1 year, 11 months ago

    CBSE > Class 10 > Social Science
    • 2 answers

    Tannu Singh 1 year, 11 months ago

    John Gothenberg has discovered the first printing press and he wrote the book Bible which was widely spred

    0Thank You

    Yuvraj Singh 1 year, 11 months ago

    Johannes Gutenberg is known for having designed and built the first known mechanized printing press in Europe. In 1455 he used it to print the Gutenberg Bible, which is one of the earliest books in the world to be printed from movable type

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    • Posted by Anjan Kr Sarmah 1 year, 11 months ago

    CBSE > Class 10 > Computer Applications (165)
    • 0 answers
    ANSWER

    • Posted by Parth Mittal 1 year, 11 months ago

    CBSE > Class 10 > हिंदी ए
    • 0 answers
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    • Posted by Khushi Puttawar 1 year, 11 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Akib Ahmed 1 year, 11 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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    Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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    • Posted by Anjan Kr Sarmah 1 year, 11 months ago

    CBSE > Class 10 > Computer Applications (165)
    • 0 answers
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    • Posted by Anjan Kr Sarmah 1 year, 11 months ago

    CBSE > Class 10 > Computer Applications (165)
    • 0 answers
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    • Posted by Aarti Thakur 1 year, 11 months ago

    CBSE > Class 10 > Information Technology (402)
    • 1 answers

    Rekha Patel 1 year, 11 months ago

    How

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    • Posted by Sunil Sannadya 1 year, 11 months ago

    CBSE > Class 10 > Science
    • 2 answers

    Gurjot Kaur 1 year, 11 months ago

    Plant hormones (phytohormones) are chemicals produced by plants that regulate their growth, development, reproductive processes, longevity, and even death.

    1Thank You

    Swaleha Malik🦋💗 1 year, 11 months ago

    Plant hormones:-plant hormones are the fluid which are secreted within the plant also known as phytohormons. plant hormones regulate the growth and development of the plant .

    3Thank You

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    • Posted by Rajni Devi 9 months, 2 weeks ago

    CBSE > Class 08 > Mathematics
    • 1 answers

    Swetleena Pati 1 year, 11 months ago

    14,400

    1Thank You

    ANSWER

    • Posted by Sindhu D 1 year, 11 months ago

    CBSE > Class 10 > English Language and Literature
    • 0 answers
    ANSWER

    • Posted by Shilaja Charan 1 year, 11 months ago

    CBSE > Class 06 > English (OLD)
    • 0 answers
    ANSWER

    • Posted by Mamta Tripathi 1 year, 11 months ago

    CBSE > Class 05 > Computer
    • 2 answers

    Babu Deori 1 year, 11 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

    Few rules to keep homework help section safe, clean and informative.
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    • Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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    Babu Deori 1 year, 11 months ago

    Ch 7

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    • Posted by Anisha Kumari 1 year, 11 months ago

    CBSE > Class 10 > Science
    • 5 answers

    Divyanshi Mishra 1 year, 11 months ago

    Because when potassium left in atmosphere it react with to form a metal oxides

    0Thank You

    Sonam .... 1 year, 11 months ago

    To reduce the chances of 🔥

    0Thank You

    Navreet Kaur Sidhu 1 year, 11 months ago

    Because it is highly reactive with air and immediately catch fire in coming in contact with air

    0Thank You

    Afran Shekh 1 year, 11 months ago

    Wrong question

    0Thank You

    Mrunali Salunke 1 year, 11 months ago

    Potassium is kept in kerosene oil because because Potassium is highly inflammable is kept in open that's why it is kept immersed in kerosene oil

    1Thank You

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    • Posted by Nandu Krishna 1 year, 11 months ago

    CBSE > Class 10 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Sulekha Kumari 1 year, 11 months ago

    CBSE > Class 08 > Mathematics
    • 2 answers

    Bhavya 😘 1 year, 11 months ago

    24.698

    1Thank You

    D.Sadhana Sri 1 year, 11 months ago

    This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

    Few rules to keep homework help section safe, clean and informative.
    • Don't post personal information, mobile numbers and other details.
    • Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
    • Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
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    Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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