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The particles of the mediums in contact with the vibrating body starts vibrating and they push the particle near them and finally comes to rest at their own position. This process continues and thus sound reaches our ear .

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Explain the causes of winds

Posted by Arya Magade 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Pratibha Sahu 7 years, 2 months ago

When the high pressure high pressure areas winds come from low pressure area it will make the tornado tsunami and so many cycles and it is very harmful for us

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What are sound wave

Posted by Monika Verma 7 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Krishti Sen 7 years, 2 months ago

Sound wave is the propety of its frequency of the produced sound

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Pratibha Sahu 7 years, 2 months ago

Sound waves are characterized by the motion of particles in the medium and are called mechanical waves

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Jas Singh 5 years, 11 months ago

Stomp

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Lab Manual : To study the properties of mixture and compound prepared by Iron filling (Fe) and Sulphur powder (s).

Posted by Anshul Choudhary 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Krishti Sen 7 years, 2 months ago

Separation process is used to separate iron fillings and sulphur powder

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Which connective tissue conect bone to bone

Posted by Samarth Ahirrao 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Sagar Rawat 7 years, 2 months ago

Lifament

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Formula making

Posted by Shrasti Magardey 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Ritvik Mandal 7 years, 2 months ago

Align

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What is stroma?

Posted by Shaidha Begam 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 6 years, 1 month ago

Stroma is the part of a tissue or organ with a structural or connective role

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What is difference between mariculture and composite fish culture

Posted by Tanu Meena 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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What is protecting our natural resources

Posted by Krish Bagde 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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What is daltan atomic theory

Posted by Ayush Kr 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Itika Singhal 7 years, 2 months ago

Dalton atomic theory is as follows : 1 all the matter is made up of very small particle called atom. 2 atom can neither be created nor be destroyed. 3 atoms of same elements are identifical in all respect i.e. shape, size etc. 4 atom of same or different elements combine together to form molecule or compound. 5 when the atom of same or different elements combine together they do so in a simple whole no. Ratio 6. Atoms of same elements can combine together in more than one ratio to form more than one compound 7 atom of different elements can combine together in the different ratio to form more than one compound 8 the no. And kind of atom in a given compound is always fixed. 9 Atoms of different element exhibit different properties. 10 atom is the smallest particle that take place in the chemical reactions.

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Protoplasm ka sang a than kiya hai

Posted by Md Iqbal Zee 7 years, 2 months ago

CBSE > Class 09 > Science

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Mention two factors need to be varied to liquefy atmospheric gases

Posted by Tamoghna Majumder 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Rajkumar Okte 7 years, 2 months ago

The 2 factor are 1= increase in pressure 2= decrease in temprature

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Calulate the number of calcium ions in 5•6 g ofcalcium oxide

Posted by Anup Rai 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Garv Sharma 7 years, 2 months ago

6.022×10^22

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Physics problem

Posted by Aditya Jha 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Name the newly discovered form of carbon which is represented as C60

Posted by Shivam Kumar 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Ashish Raj 7 years, 2 months ago

Buckminsterfullerene

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Abinash Mohanty 7 years, 2 months ago

Fullerene or Buckyball

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Meaning of angular speed and angular velocity

Posted by K. Sanju 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Different between bone and cartilage?

Posted by Vaish Shukla 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Shivam Kumar 7 years, 2 months ago

Bone - bone is highly calcified , hard and rigid connective tissue. Cartilage - cartilage is solid but semirigid and flexible. It is widely spaced cells.

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Compare plants cell and animals cell ? Diagram?

Posted by Shakti Prakash 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 7 years, 2 months ago

<th>BASIS FOR COMPARISON</th> <th>PLANT CELL</th> <th>ANIMAL CELL</th>

Meaning	The fundamental and functional unit of Kingdom Plantae of the Eukaryotic cells, having true nucleus along with the many organelles, specially the cell wall, chloroplast and the vacuoles.	Animal cells are also the basic unit of life of Kingdom Animalia of the Eukaryotic cells, having all the necessary organelles with specified functions.
Cell Size	Usually larger, which is fixed.	Smaller in size and irregular.
Cell Shape	Rectangular.	Round.
Enclosed by	A plant cell is enclosed by rigid cell wall along with the plasma membrane.	The animal cell is enclosed by a flexible, thin plasma membrane only.
Nucleus	Present and lies on one side of the cell.	Present and lies in the centre of the cell wall.
Centrosomes/Centrioles	Absent	Present
Plastids	Present with chloroplast in them.	Plastids are absent.
Cilia	Absent.	Usually present.
Glyoxysomes	May be present.	Absent.
Plasmodesmata	Present.	Absent.
Desmosomes/Tight junction	Absent.	Present.
Mitochondria	Present in fewer number.	Present in large number.
Vacuoles	Only one huge vacuole.	Animal cells contain many in numbers.
Lysosomes	Rarely noticed in plant cells.	Present.
Chloroplast	Plant cell contains chloroplast, which they use in storing energy.	Animal cells lack chloroplast and use mitochondria for energy storing purpose.
Reserve food	Present as starch.	Present as glycogen.
Synthesis of nutrients	They can synthesize all amino acids, vitamins and coenzymes.	They are not able to synthesize any amino acids, vitamins and coenzymes required by them.
Cytokinesis	Occurs by cell plate only.	Occurs by furrowing or constrictions.
Hypotonic/Hypertonic Solutions	Plant cell does not burst if placed in hypotonic solution.	Animal cells burst in hypertonic solution as they do not have the cell wall.

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Draw plant and animal cell

Posted by Anu Sigh 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 7 years, 2 months ago

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What evolution of organisms ?who first of all gave the idea of evolution?

Posted by Pal Pal 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Geetanjali Chaurasiya 7 years, 2 months ago

The evolution of organism is the report of changes in the body design and the characteristics of animals, plants , or humans..... The idea of evolution was first given by Charles Darwin in 1859...........

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Sheikh Naaz 7 years, 2 months ago

The first idea of evolution given by Charles Darwin in 1859

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A ball rolls down from an inclined plane to a horizontal frictionless plane. It will: a) Stop after 10 seconds b) Continue to move with uniform acceleration c) Continue to move forever with uniform velocity d) Will start moving in a circular path

Posted by Rashid Hayat 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Arimdam Hujut 7 years, 2 months ago

Option c

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an athele completes one round of a circular track of diameter 200m in 40s.What will be the distance covered snd the displacement at the end of 2 minutes 20 seconds

Posted by Niral Anmol 7 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Ravindra Patil 7 years, 2 months ago

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Prathmesh Kadam 7 years, 2 months ago

100

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Prathmesh Kadam 7 years, 2 months ago

1000

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One atmosphere is equal to how much Pascal

Posted by Sheikh Naaz 7 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Sagar Rawat 7 years, 2 months ago

1 atmosphere equal to 1.01×10 is to ki power 5 pascal

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Pratibha Sahu 7 years, 2 months ago

1atmosphere is equal to 1pascal

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The phenomenon of increase in concentration of non-biodegradable organic compound with each tropic level in a food chain is called

Posted by Sheikh Naaz 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Is leukocytes is irregular in shape

Posted by Sheikh Naaz 7 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Is work can be nagative ?

Posted by Nadeem Saifi 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Aditi Kulkarni 7 years, 2 months ago

Yes it can, when displacement of the object and force applied on it are in opposite directions

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A flask contains 4.4 g of carbon dioxide. Calculate :- a)How many moles of carbon dioxide does it contain? b)How many molecules of carbon dioxide are present in the sample? c)How many atoms of oxygen are present in the give sample?

Posted by Tarini Kohli 7 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Nandana Nair 7 years, 2 months ago

Given mass=4.4g Molar mass=12+32=44u A) No:of moles =4.4/44 =0.1mol B). No:of molecules=no:of moles=6.022×10^23 =0.1×6.022×10^23 =0.6022×10^23 C). No of oxygen atoms =2

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Which mode of nutrition fungi shows ?

Posted by Drishi Jain 7 years, 2 months ago

CBSE > Class 09 > Science