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The process which is used to seperate different components of mixture which can be seperated by filteration. The principle is that during centrifugation lighter particles rises above and denser particles stay at bottom when spun rapidly. Ex. Used to squeeze out water from clothes in washing machine.... Also used to seperate cream from milk and butter.

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What is the process of the cell??

Posted by Swarni Thakare 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Sakshi Singh 4 years, 1 month ago

Cell biology is the study of the formation structure function communication and death if a cell .Studying processes that occur within a cell replication energy conversion moleculer transport and intercellular signaling is vital to understanding many disease states

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From a rifle of Mass 50 g is fired with an initial velocity of 35 m/s calculate the initial recoil velocity of the rifle

Posted by Pranitha R 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Ayush Yadav 4 years, 1 month ago

35m/s^2 Newton third law ot motion Action = Reaction

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Water works purification explanation with diagram

Posted by Bhanupriy M 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

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SI unit of momentun is kgm/s or nor

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Bharti Garg 4 years, 1 month ago

Kg /s

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Kiran Saraswat 4 years, 1 month ago

Kg/m

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Shivkant Mishra 4 years, 1 month ago

Yes you are right

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Tanay Kabra 4 years, 1 month ago

Kg/m

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Anupama Singh 4 years, 1 month ago

Yes

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What is called time lapse

Posted by Swayam Shah 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Sakshi Singh 4 years, 1 month ago

Time lapse refers to a shot that follows a transition in time like an entire l Sunset in a matter of seconds or the flowering of a plant in under a minute

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Tisuee is made of how many cells

Posted by Pushap Thakur 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Shivani Singh 4 years, 1 month ago

Many cells

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Birdeep Gumber 4 years, 1 month ago

420

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Anju Arya 4 years, 1 month ago

tissues are group of many cells performing a specific function

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Shaik Mehwish 4 years, 1 month ago

200 in human body

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Kajol Bishnoi 4 years, 1 month ago

Not fix

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1.) What are vascular bundle 2.) How do cork act as protective tissue

Posted by Manya Puri 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 3 years, 11 months ago

Xylem and phloem makes vascular bundle. As the plant grows older, the outer protective tissue, epidermis undergoes certain changes. A strip of secondary meristem, called phellogen or cork cambium replaces epidermis of stem. Cells on the outside are cut off from this layer. This forms the several-layer thick cork or the bark of the tree. Cells of cork are dead and compactly arranged without intercellular spaces. They also have a chemical called suberin in their walls that makes them impervious to gases and water.

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If a bullet fire from a gun, the gun adjust the force on the gunman backward ?

Posted by Chitralekha Khaund 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Swayam Shah 4 years, 1 month ago

Yes ut is called recoil of gun

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Himanshu Singh 4 years, 1 month ago

Yes because it is a Newton third law of action and reaction

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Distinquish between speed and velocity

Posted by Devika P. V 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Anju Arya 4 years, 1 month ago

speed is a scalar quantity where as velocity is a vector quantity. speed is a fast movement where as velocity is rate of change of speed but they both are measured in meters per second or their SI Unit is same that is meter per second

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Satish Lovewanshi 4 years, 1 month ago

I love you

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Kritika Singh 4 years, 1 month ago

Speed - is scalar quantity It doesn't follow vector rule of addition Only positive No direction Velocity- it is vector Follow vector rule of addition Negative and positive Direction mentioned These are basic ...you can search on physic book if higher classes for more

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why is the weight of an object on the moon one sixth iths weight on the Earth?

Posted by Karnica Agrawal 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Swayam Shah 4 years, 1 month ago

Due to acellaration of gravity(g) which 9.8N on earth which id directly propotional to mass of planet or celestial body so moon has less mass (newtons 2nd law)

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Himanshu Singh 4 years, 1 month ago

Due to the gravitational force it has less gravitational force than earth

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Satish Lovewanshi 4 years, 1 month ago

Kritika sing I Love you

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Kritika Singh 4 years, 1 month ago

Ratio*

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Kritika Singh 4 years, 1 month ago

Due to the gravity due to acceleration acting on it ..as mass of moon is lesser as compared to that of earth ..the g also decrease ..by ration it turns out to be that a object of 6 kg in earth =1 kg on moon

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What is bes

Posted by V S 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Srushti Khadtare Khadtare 4 years, 1 month ago

Bes (/ˈbɛs/; also spelled as Bisu), together with his feminine counterpart Beset, is an ancient Egyptian deity worshipped as a protector of households and, in particular, of mothers, children and childbirth. ... Bes later came to be regarded as the defender of everything good and the enemy of all that is bad.

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What is the definition of Free fall?

Posted by Gulshan Sinku 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Swayam Shah 4 years, 1 month ago

When an object falls only under the influence of gravitational force alone is called free fall which is not possible in day to day life because friction and air resistance act on object falling

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Srushti Khadtare Khadtare 4 years, 1 month ago

downward movement under the force of gravity only.

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Can anyone please send me the step-by-step answer for table 10.1 in physics chapter -10 (gravitation )

Posted by S . Maha Gowri 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Shivani Singh 4 years, 1 month ago

????

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Kiran Saraswat 4 years, 1 month ago

???

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Aditya Rathod 4 years, 1 month ago

Nah!

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Ankan Karmakar 4 years, 1 month ago

Good

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Please link the previous year papers for tissues

Posted by Pranavi Joshi 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Q : Difference between immediate and contributory causes of diseases.

Posted by Riddhi Ahuja 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 1 month ago

Immediate Causes
1. Factors which are directly responsible for a particular disease are called immediate causes.
2. Example: Pathogens such as virus, bacteria, fungi, etc.

Contributory Causes

1. Factors which provide favourable conditions which make pathogens invasion easy are called contributory causes.

2. Example: poor nourishment, unhygienic environment, pollutants, etc.

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please explain the numericals of physics of chapter motion and force and laws of motion with some random examples

Posted by Pranavi Joshi 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Swayam Shah 4 years, 1 month ago

Seee

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Explain endoplasmic reticulum in simple and understandable words

Posted by Pranavi Joshi 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Pranavi Joshi 4 years, 1 month ago

Thanks kuldeep ??

1Thank You

Pranavi Joshi 4 years, 1 month ago

Thanx alot kuldip??

1Thank You

Kritika Singh 4 years, 1 month ago

Endoplasmic reticulum is a organelle of a cell that helps to connect cytoplasm with nucleus..which is necessary to transfer thing ( basically mineral ,food , oxygen etc) This is a easy to learn definition .. functions not included along with external information

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Pranavi Joshi 4 years, 1 month ago

Kuldeep Malik Thanks for ur answer but u have explained rough endoplasmic reticulum in more detail I only want endoplasmic reticulum

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Kuldeep Malik 4 years, 1 month ago

Endoplasmic reticulum A network of tubes for transportation of substances It is called rough because of presence of ribosomes on surface of tubes and it look rough Ribosomes are manufacturer of protein and er are known for manufacturation of protein Refer to ncert book for more information

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Please explain the process of ATP(Adenosine Triphosphate) And why is it necessary???

Posted by Pranavi Joshi 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Pranavi Joshi 4 years, 1 month ago

Ohk thanx vishwas verma But do u know the explanation If yes please tell

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Vishwas Verma. 9681 4 years, 1 month ago

I necessary because it's the energy currency of a cell

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Where are gens located

Posted by Pinki Patel 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Bharti Garg 4 years, 1 month ago

Chromosome

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Divya Gupta 4 years, 1 month ago

Genes are located at chromosomes in nucleus

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Aditya Rathod 4 years, 1 month ago

In the cell in our body in our nucleus in our chromosomes so what do u want now ???

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Pranavi Joshi 4 years, 1 month ago

Firstly it's not gens it's genes and they're located on the thread like structures called chromosomes which are located inside the nucleus if a cell

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Mohd Faisal 4 years, 1 month ago

Gene located at Chromosomes in Nucleus

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Can anyone please send me the step-by-step answer for table 10.1 in physics

Posted by S . Maha Gowri 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

S . Maha Gowri 4 years, 1 month ago

Gravitation (chapter-10)

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Kalpnaagrawal Kalpnaagrawal 4 years, 1 month ago

Which chapter?

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Why exercise essential for good health? Please give right answer

Posted by Sandip Mondal 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

*Suhana * 4 years, 1 month ago

1) It improves the ability to work and gives strength to the body. ( The person having good health get the jobs easier because they can work faster and more as compare to others.) 2)It is good because it freshes our mind.( Fresh mind is able to get more knowledge). 3) If we have some phisical problem like stress and head ache, etc. it improves much pain then to take medicines.

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Define air

Posted by Rani Barman 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Shivani Singh 4 years, 1 month ago

The mixture of gases that surrounds the earth and that people animals and plant's breathe.

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Pranavi Joshi 4 years, 1 month ago

Air is a heterogeneous mixture of gases which includes oxygen which we need to breath It's a non-uniform composition and consist two or more phases

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Dhiraj Singh 4 years, 1 month ago

Air is the mixture of gases.

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What is newton first law?

Posted by Khevish Bhardwaj 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

Newton’s First Law of Motion:

Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.

Explanation: If any object is in the state of rest, then it will remain in rest untill a exernal force is applied to change its state. Similarly an object will remain in motion untill any exeternal force is applied over it to change its state. This means all objects resist to in changing their state. The state of any object can be changed by applying external forces only.

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Which is not mixture

Posted by Dhrumal Solanki 4 years, 1 month ago

CBSE > Class 09 > Science