CBSE > Class 09 > Science | CBSE Board | Homework Help

Manures help to increases the fertility of soil so the crop is grow faster then the farmer sell the material and productivity is increasing with the help of manures

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Sarthak Kathuria 3 years ago

Manures increases the fertility of soil.Hence productivity increases

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Differentiate between prokaryotic and eukaryotic

Posted by Sudhanshu Kumar 3 years ago

CBSE > Class 09 > Science

2 answers

Devika Prajapati 3 years ago

Prokaryotic cell ----------------------------- Size of a cell is generally small . Nucleus is absent. Nucleons is absent. Cell organelles are absent.

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Radhika Sharma 3 years ago

Prokaryotic cell :--------~ 1. Nucleus doesn't have nuclear membrane 2. Cell organelles are absent 3. 70s ribosomes are present 4. Unicellular 5. Small in size Eukaryotic cell :::------------~ 1. Nucleus covered with nuclear membrane 2. Cell organelles are present 3. 80s ribosomes are present 4. Multicellular 5. Large in size .

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change the speed of 6m/s into km/s

Posted by Sneha Das 3 years ago

CBSE > Class 09 > Science

2 answers

Dhananjay Patil 3 years ago

Given Speed= 6m/s To covert m/s to km/h we have 1m/s=18/5 km/h 6 m/s = 18/5×6 =21.6km/h

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Sujeet Kumar Gupta 3 years ago

0.006 km/s

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What is the difference between chromatid, chromatin and chromosome

Posted by Saloni Pardhi 3 years ago

CBSE > Class 09 > Science

1 answers

Sujeet Kumar Gupta 3 years ago

In a non-dividing cell, the nucleus contains chromatin material which is composed of DNA and proteins which further convert into chromosomes during the cell division

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what is cyotosym

Posted by Heet Anjaria 3 years ago

CBSE > Class 09 > Science

1 answers

Radhika Sharma 3 years ago

Cytoplasm:-- 1. Fluid content in cell 2. Contain cell organelles 3. These cells organelles have specific function

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How many chromosomes in female

Posted by Miss__Riyu Yadav 3 years ago

CBSE > Class 09 > Science

2 answers

Radhika Sharma 3 years ago

23 pair

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Saksham Kumar 3 years ago

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Gravitation formula

Posted by Lakita Sharma 3 years ago

CBSE > Class 09 > Science

2 answers

Arnav Saraf 3 years ago

F=Gm¹m²÷r²

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Pragati Sharma 3 years ago

F=Gm¹m²/r² F= Force G= Gravitational constant m¹ =mass of object 1 m²= mass of object 2 r= distance between centers of the mass...

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What is sounn

Posted by Lakita Sharma 3 years ago

CBSE > Class 09 > Science

2 answers

Sheetal Gupta 3 years ago

Sound is a form of energy which produce sensation hearing in our ears

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Saksham Kumar 3 years ago

Sound is a form of energy which provides sensation of hearing in our ears

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Sun has climbing of palm tree what is the work done against the force of gravity what is the work done due to the force applied by the person if he climb stem and masses 45 kg

Posted by Ash Veer 3 years ago

CBSE > Class 09 > Science

1 answers

Hrishika Garsa 3 years ago

Mass = 45kg g = 10m/s² H=? PE=mgh =45×10×h =450h

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What is mean by mesosome and polyribosomes??

Posted by Account Deleted 3 years ago

CBSE > Class 09 > Science

0 answers

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Why echo more hear in night compar to mid day

Posted by Sushant Pandey 3 years ago

CBSE > Class 09 > Science

1 answers

Adarsh Ojha 3 years ago

After sunset, the surface near the earth cools down more than air in succeeding layers above. Hence, the distant sounds can be heard as the sound waves get refracted and reach the receiver which is present at a distant point. During the day, the sound bends away from the ground; during the night, it bends towards the ground. Hence at night, you have additional "sound" reaching you, making it louder.

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What are polyatomic ions? Give examples.

Posted by Chethan Chethu 3 years ago

CBSE > Class 09 > Science

2 answers

Ridhima Gehlot 3 years ago

The group of atoms carrying a charge is called polyatomic ions.Examples of Polyatomic ions are - Ammonia, Phospate, Sulphate, Sulphite, Nitrate etc

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Adarsh Ojha 3 years ago

Those ions which are formed from groups of joined atoms are called polyatomic ions. Eg- sodium ion, potassium ion, ammonium ion, chloride ion etc.

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What is inverse square law applications

Posted by Saish Dongare 3 years ago

CBSE > Class 09 > Science

3 answers

Saish Dongare 2 years, 11 months ago

Ok faizan

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Faizan Khan Faizan Khan 3 years ago

What is xylem

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Faizan Khan Faizan Khan 3 years ago

What is tissue

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What is mean by balance force and unbalance

Posted by B Piyush 3 years ago

CBSE > Class 09 > Science

3 answers

Saumya Gaur 3 years ago

If the resultant force is zero then , it is called balanced force & not zero so , it is called unbalanced force ............ 😁😁

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Sheetal Gupta 3 years ago

Balance force is Zero Unbalanced force is 🚫 zero

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B Piyush 3 years ago

It was reserve that force acts acting on a body is zero the force are said to be balance force and balance force it was reserve to service force acting on your body is not zero the force are said to be unbalance

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Explain the significance of hair like structure of epidermis tissue

Posted by Mouli Chopra 3 years ago

CBSE > Class 09 > Science

1 answers

Bhavya Rana 3 years ago

Epdidermal cells in roots create hair like structure/protections which then increase the absorption surface area of roots. By increasing the absorption surface area roots now can absorb more nutrients and water.

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Who 1/12 the mass of one atom of carbon-12 is to mesar the all atoms mass

Posted by Kishan Dansena 3 years ago

CBSE > Class 09 > Science

1 answers

Prince Kumar 3 years ago

Hydrogen atomic mass__ 1u

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What is the difference between Na and Na+ in terms of members of the electron

Posted by Roshmi Banik 3 years ago

CBSE > Class 09 > Science

3 answers

Dipti Bhardwaj 3 years ago

Na+ is an ion having 8 electrons in L - shell .....and Na is an element having 1 electrons in M-shell

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Pratham Singh 3 years ago

Na+ is electron

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Pratham Singh 3 years ago

Na is atom

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a 1000-w heater is used for 1hours every day for 30days. find the cost of electricity if the rate is Rs 3.00/unit.

Posted by Sakshi Sharma 3 years ago

CBSE > Class 09 > Science

2 answers

Siddharth Singh 3 years ago

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Vaibhav Verma 3 years ago

Ans. Rs 90 1000w = 1kilowatt. Used for 1hr. That is 1kW/h = 1unit of electricity. Similarly for 30 days, if cost per unit is Rs 3. Then, 30× 3 = 90 Rs.

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What are desirable agronomic characteristics for crop improvement

Posted by Rishi Kumar 3 years ago

CBSE > Class 09 > Science

1 answers

Ansh Dagar 3 years ago

Branching and tallness

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What happens when red blood cells is kept in concentrated saline solution?

Posted by Sarvagya Agarwal 3 years ago

CBSE > Class 09 > Science

2 answers

Ridhima Gehlot 3 years ago

The cell will shrink

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Kunal Nainwal 3 years ago

Mujhe nehi pta h mujhse mat pucho na

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What are human cattle farming techniques. Explain

Posted by Mohammed Rehan 3 years ago

CBSE > Class 09 > Science

0 answers

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Explain class nematoda. Biology

Posted by Vaibhav Verma 3 years ago

CBSE > Class 09 > Science

0 answers

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Water cycle art integrated project pdf!

Posted by Someone Unknown 3 years ago

CBSE > Class 09 > Science

2 answers

Someone Unknown 3 years ago

Didn't ask you!

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Abhimanyu Tyagi 3 years ago

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Why is acceleration due to gravity is maximum at poles nd minimum at equator?

Posted by Someone Unknown 3 years ago

CBSE > Class 09 > Science

3 answers

Saumya Gaur 3 years ago

Because the radius of earth is maxium on the poles

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Its_Unknown_ 10_ 3 years ago

Since, acceleration due to gravity is directly proportional to earth's gravity. Therefore where there is more gravity more acceleration due to gravity will be there. Based on Geographic conditions of Earth as earth is spherical.... And also Equator is more nearer to the centre of the earth hence minimum acceleration due to gravity {since, gravity at centre of earth= 0} Same for poles . As the poles are far away from earth's centre {Here g= 9.8ms^-2} gravity would be more of course.. Therefore maximum acceleration due to gravity and no other place is such far to earth's centre as the poles.

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Vaibhav Verma 3 years ago

Good question,, Answer as follows÷ Since, acceleration due to gravity is directly proportional to earth's gravity. Therefore where there is more gravity more acceleration due to gravity will be there. Based on Geographic conditions of Earth as earth is spherical.... And also Equator is more nearer to the centre of the earth hence minimum acceleration due to gravity {since, gravity at centre of earth= 0} Same for poles . As the poles are far away from earth's centre {Here g= 9.8ms^-2} gravity would be more of course.. Therefore maximum acceleration due to gravity and no other place is such far to earth's centre as the poles.. {To be remembered equation ÷ Acceleration due to gravity is directly proportional to gravity The more gravity more acceleration due to gravity and vice versa}

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The displacement of a body is proportional to the cube of the time elapsed. The magnitude of acceleration is : Kindly explain it in detail.....

Posted by Aakriti Dubey 3 years ago

CBSE > Class 09 > Science