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    • Posted by Priyanshu Sagar 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 3 answers

    Priyanshu Sagar 7 years, 1 month ago

    Here is the answer of your question an object is thrown upward then ,final velocity (v)=0 ,initial velocity (u)=3m/s, time (t)=5sec. Height (s)=? To find S, we find acceleration V=u+at 0=3+a×5 -3=5a -3/5=a using second equation of motion S=ut+1/2×a×t square S=3×5+1/2×-3/5×5 square S=15-3/10×25 S=15-15/2 S=30-15÷2 S=15/2 S=7.5m

    0Thank You

    Ashish Bhadouria 7 years, 1 month ago

    45 m

    0Thank You

    Priyanshu Singh 7 years, 1 month ago

    Oye ye computer h science nhi!!!!

    0Thank You

    ANSWER

    • Posted by Aman Rajput(Crazy Boy) 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Rahul Markam 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Srishti Agarwal 7 years, 1 month ago

    When a force of 1Newton acts on an object and creates a displacement s of 1m ,the work is said to be done.

    0Thank You

    Abdul Rauf 7 years, 1 month ago

    Work done by a force. Work is done whenever a force moves something over a distance. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force. ... However, not all the energy available does a useful job.

    1Thank You

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    • Posted by Ritika Verma 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Srishti Agarwal 7 years, 1 month ago

    Total time taken =5 sec Tume taken to reach the object to produce echo =5/2 =2.5 sec Speed =distance ÷ time =3652÷2.5 Speed=1460.8 m/s

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    • Posted by Shivam Mishra 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Monish Tikendra Kumar Netam 7 years, 1 month ago

    In law of conservation of mass a mass can niether be created or destroyed in a chemical reaction it can be only changed And in law of constant proportion the number of atom in an element are in a fixed proportion like the water H2o are in 1:8 means if you take a sample of water from sea or normal water the both water will be In same proportion

    1Thank You

    Monish Tikendra Kumar Netam 7 years, 1 month ago

    Law of conservation of mass and law of constant proportion

    2Thank You

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    • Posted by Shreya Jain 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Harit Naagar 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Priyanshu Patel 7 years, 1 month ago

    RER helps in protein synthesis SER helps in lipid synthesis..

    0Thank You

    Aryan Azad 7 years, 1 month ago

    Rough. Endoplasmic reticulam and smooth endoplasmic reticulam

    1Thank You

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    • Posted by Prashanť Torres 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Nitin Jangra,?✌ 7 years, 1 month ago

    It does not tell about the stability of atom

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    • Posted by Harit Naagar 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 3 answers

    Anashuman Singh 7 years, 1 month ago

    Robert Brown

    0Thank You

    Harit Naagar 7 years, 1 month ago

    Ok

    0Thank You

    Akanksha Kumari? 7 years, 1 month ago

    Ernest Rutherford

    2Thank You

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    • Posted by Pratik Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Anashuman Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Harit Naagar 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Anashuman Singh 7 years, 1 month ago

    Sugar gets charred to dryness or may even burn with a sugary smell on heating, whereas ammonium chloride gets sublimed on heating.

    1Thank You

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    • Posted by Keshav Agrawal 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Keshav Agrawal 7 years, 1 month ago

    The sense of smell is not matter. However, the smell or odour of a substance is Classified as matter. The smell of any substance (perfume) is the gaseous form of that substance which our olfactory system can detect (even at very low concentrations). Hence, smell of perfume is matter.

    1Thank You

    Anashuman Singh 7 years, 1 month ago

    Smell, though can by felt by one of our five senses, is not a matter because it neither has space nor occupies volume.

    1Thank You

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    • Posted by Arun Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Yogita Ingle 7 years, 1 month ago

    Commercial Unit of Energy. The SI unit joule is too small to express very large quantities of energy. Hence we use a bigger unit called kilowatt hour (kWh) to express energy. 1 kWh is the amount of energy consumed by an electrical gadget in one hour at the rate of 1000 J/s or 1kW.

    0Thank You

    Nikunj Arora 7 years, 1 month ago

    Si unit of energy is joule commercial unit of energy is kwhr t

    0Thank You

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    • Posted by Arun Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Meghna Thapar 6 years, 1 month ago

    AIDS virus attacks white blood cells (WBCs) or lymphocytes of human beings and weakens the human body’s immunity or self-defence mechanism. AIDS becomes prone to many other infections or diseases. Hence, it is called a fatal disease.

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    • Posted by Krishna Saraswat 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Yogita Ingle 7 years, 1 month ago

    The advantages of classifying organisms are as follows:
    (i) Classification facilitates the identification of organisms.
    (ii)  helps to establish the relationship among various groups of organisms.
    (iii) helps to study the phylogeny and evolutionary history of organisms.
    (iv) By studying a few animals, the characteristics of the whole group can be known.

    0Thank You

    Vinod Pal 7 years, 1 month ago

    Teu

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    • Posted by Krishna Saraswat 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 1 month ago

    Cryptogamae Phanerogamae
    This sub-kingdom includes plants which do not flower in their life time. This sub-kingdom includes plants which flower to perform sexual reproduction.
    Plant body is not well differentiated into stem, leaves etc. Plant body possess well-formed stem, leaves and roots.
    Reproductive organs are hidden. These are highly evolved plants.
    These are less evolved plants. These plants produce seeds.
    These plants do not bear seeds. Seeds germinate into new plants.
    These can reproduce through spores. Phanerogams are further classified into Gymnosperms and Angiosperms.

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    • Posted by Krishna Saraswat 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Ananya Singh 7 years, 1 month ago

    Notochord is the initial stage of nervechord which disapear after a certain age period in some organism while develop as nervechord or backbone in other organisms

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    • Posted by ?Shubham??? Roy? 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Meghna Thapar 6 years, 1 month ago

    Applications of Isotopes:

     

    1. Radioactive isotopes are used in nuclear reactors as a fuel. The nuclear reactors are used to generate electricity.
    2. Uranium-235 isotope is the fuel of choice for nuclear power plants.They are also used as diagnostic tools in medicine.
    3. Cobalt-60 is the isotope of choice for radiotherapy.
    4. Phosphorus-30 is used in the treatment of leukemia or blood cancer.
    5. Iodine-131 radioisotope, used as a 'tracer', is injected into the body to check the activity of the thyroid gland. It helps in detecting the amount of iodine taken up by the thyroid gland. It is an important tool in the diagnosis and treatment of diseases such as goitre.

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    • Posted by Anashuman Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Mukul Singh 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 3 answers

    Priyanshu Patel 7 years, 1 month ago

    I'm disappoint by yogita ingle because her 4 point is not correct .well it's not her mistake someone told to him but actually there's nothing like 4 point.. it can only be possible if the men has aids problem....

    0Thank You

    Yogita Ingle 7 years, 1 month ago

    AIDS: Acquired Immune Deficiency Syndrome

    Aids can be transmitted from person to person in many ways:

    • By unprotected intercourse with infected person
    • By Blood transfusion
    • From mother to a child (By birth), it can also be spread by breastfeeding
    • Through oral ***, in some cases it can possible by deep kissing
    • By the use of hypodermic needles

    3Thank You

    Anashuman Singh 7 years, 1 month ago

    Acquired immuno deficiency syndrome. It spreads though sexual contact, blood infusion or breast feeding.

    2Thank You

    ANSWER

    • Posted by Mohammed Mujtahid Ahmed Karigar 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Yogita Ingle 7 years, 1 month ago

    Air pollution is defined as the introduction of pollutants, organic molecules, or other unsafe materials into Earth’s atmosphere. This can be in the form of excessive gases like carbon dioxide and other vapours that cannot be effectively removed through natural cycles, such as the carbon cycle or the nitrogen cycle.
    Causes of Air Pollution

    Air pollution can be caused by both man-made and natural causes, although the contribution by these natural causes is pretty negligible.

    The main culprit of air pollution is the man-made sources of air pollution. The single most harmful source of air pollution is the unchecked burning of fossil fuels by mankind. Fossil fuels (non-renewable sources of energy such as crude oil, petrol, diesel, coal etc.) are used in almost every process of industrialization, manufacturing, transport and energy generation

    Prevention

    1. Use of Energy efficient appliances: Whether at the domestic level or at the industrial level, we must push for appliances that use energy efficiently, which result in complete combustion of fuel, as incomplete combustion causes air pollution.
    2. Shifting industries: Another possible solution to reduce the harmful effects of air pollution is to shift the manufacturing plants, factories and industries to remote areas with a low level of population. By doing so you can ensure that pollution in the urban areas decreases over time.
    3. Using Modern Techniques: With technology making great advancements, there are now technologies available that can help reduce the release of pollutants in the air. Air filters, scrubbers, precipitators are just a few examples.
    4. Shifting to Natural Gasses: Instead of using and exhausting fossil fuels, shifting to greener options is a no-brainer. For example, using CNG (compressed natural gas) instead of petrol or diesel is a great option.

    2Thank You

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    • Posted by ?Rahul? ?Gusain? 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 2 answers

    Aditya Raghav 7 years, 1 month ago

    Mixture is a substance which is made up of two or more kind of elements

    0Thank You

    Anashuman Singh 7 years, 1 month ago

    Mixtures are constituted by more than one kind of pure form of matter.

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    • Posted by Dayanand Rajput 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 3 answers

    ?Shubham??? Roy? 7 years, 1 month ago

    Any particle is made of tiny partical is called matter ex -chair,table,plastic etc.

    1Thank You

    Sandhya Saini 7 years, 1 month ago

    Anything which occupies and have mass called matter .like book,chair etc.

    0Thank You

    Khalid Raza 7 years, 1 month ago

    Ball bat cake and any thing have mass and ocuupiep space

    2Thank You

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    • Posted by Haji Moinuddin 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 3 answers

    Krishna Saraswat 7 years, 1 month ago

    1. Manure had a large amount of Fertile

    0Thank You

    ?Shubham??? Roy? 7 years, 1 month ago

    Manure is natural thing is advantage are 1.it give fertility to the soil 2.it gives mineral to soil 3.it good for plant growing up in right manner

    0Thank You

    Aman. N 7 years, 1 month ago

    1. Manure provides organic substances in high amount 2. Manures are eco-friendly in nature 3. Manures are not nutrient specific 4. Cheap 5. Can be made on home

    2Thank You

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    • Posted by Jeet Chavan 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Ananya Singh 7 years, 1 month ago

    Rabies is caused due to rabies virus And its vector are most of the wild animal's bite such as dogs ?, rat etc...

    1Thank You

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    • Posted by Anubhav Sharma 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER

    • Posted by Angel Jindal 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Anashuman Singh 7 years, 1 month ago

    Co2 is kept under very high pressure in fire extinguishers, you can always see the pressure by looking at the pressure gauge of a fire extinguisher. Therfore, it is a liquid inside fire extinguishers.

    1Thank You

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    • Posted by Angel Jindal 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Tanisi Agarwal 7 years, 1 month ago

    Dry ice is basically solidified carbon dioxide, and is called so because the gas on solidifying gives an appearance similar to that of ice. Unlike ordinary ice, it does not melt into a liquid but changes directly into CO2gas, a phenomenon known as sublimation. It changes into gaseous state at and above -78.5 degree Celsius. As this temperature is much lower than water, it is much colder than water ice. Its density varies from1.2 - 1.6 g / cm3. It is therefore denser than water.It is mainly used as a cooling agent because it has temperaturelower than that of water ice. It isused for preserving frozen food like ice cream etc.

    3Thank You

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    • Posted by Ketan Meshram 7 years, 1 month ago

    CBSE > Class 09 > Science
    • 1 answers

    Tanisi Agarwal 7 years, 1 month ago

    Natural resources are resources that exist without actions of humankind. This includes all valued characteristics such as magnetic, gravitational, electrical properties and forces etc. On earth it includes: sunlight, atmosphere, water, land (includes all minerals) along with all vegetation, crops and animal life that naturally subsists upon or within the heretofore identified characteristics and substances

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