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State first law of motion

Posted by Biswasi Naik 7 years, 6 months ago

1 answers

Satyam Kumar 7 years, 6 months ago

According to the newton's first law of motion: The body is remain at rest and the body in motion will continue in motion , applying no external force on it

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When a carpet is beaten with a stick dust comes out of it explain

Posted by Biswasi Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Disha Sharma 7 years, 6 months ago

When a carpet is beaten with stick the carpet comes in motion while the dust due to the inertia of rest tends to remain at rest and comes out of it

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What is the movemetum of an object of mass m.moving with a velocity ?

Posted by Biswasi Naik 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Arjav Jain 7 years, 6 months ago

P=m.v Where , p=momentum M=mass V= velocity

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When we solve the sample papers

Posted by Krishna Chaudhary 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is the means of 'respond to stimuli'

Posted by Ruqaiya Masood 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Any external agent that produces a reaction in our body in favour of it or away from it is known as stimulus. For example: When we are hungry and we smell something cooking in the kitchen then we move into the kitchen to see what is cooking. This smell is a stimulus that makes us to go into the kitchen.

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The relative density of a substance is 0.8. Find the depth it will go in water if it is released from a height 2 metres from the ground.

Posted by Pragyan Sarma 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Transfer section of dried bone in mammals

Posted by Abhishek Dhull 7 years, 6 months ago

CBSE > Class 09 > Science

0 answers

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Plzz make the notes of science so that i will able to complete my school works and i can be able to score good marks I want this because all time because of wrong notes my marks always dedocts and for that if u will give me right notes then i would be able to score 3 position to 1 position in my class Its humble req pls dont ignore this i req u Thank u???

Posted by Kunal Roy 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Ritesh Kumar 7 years, 6 months ago

You can use the notes present in this app. ???

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Si unit of impulse

Posted by Rohit Soni 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Ritesh Kumar 7 years, 6 months ago

Newton second (N•s) ???

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How to find momentum

Posted by Anirban Singha 7 years, 6 months ago

CBSE > Class 09 > Science

3 answers

Ritesh Kumar 7 years, 6 months ago

P=ma???

1Thank You

Nityam Ayush 7 years, 6 months ago

Momentum=mass×velocity

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Manish Kumar 7 years, 6 months ago

M×a

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Distance can not be zero and displament can be justify this statement

Posted by Rishabh Maheshwari 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Rahul Soni 7 years, 6 months ago

0Thank You

Rishabh Maheshwari 7 years, 6 months ago

1Thank You

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What is the ATP

Posted by Ayushman Nautiyal 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Rahul Soni 7 years, 6 months ago

What a rubbish question

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Mehwish Ali 7 years, 6 months ago

ATP is the enery released by mitochondria

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What is mitrocondia

Posted by Ashish Kr 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Arjav Jain 7 years, 6 months ago

mitochondria is a double layer bonded structure in a Cell it is also known as the powerhouse of the cell because it contains energy and provide energy to all the cell organelles it is also known as semi autonomous organelle because it is present with chlorophyll and with circular DNA

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Why is plasma membrane called selectively pemieble membrane

Posted by Himanshi Chaudhary 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Kartiek Singh 7 years, 6 months ago

because it allows only some selective material from higher concentration to lower concentration to lower concentration

4Thank You

Ayush Dwivedi 7 years, 6 months ago

Because it allows flow only some substances into the cell and out of the cell

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ANSWER

what is reflex arc

Posted by Soniya Chhonker 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Rahul Kumar Rahul Kumar 7 years, 6 months ago

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Which cell organel contains cell sap?

Posted by Krish Sinha 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Ritesh Kumar 7 years, 6 months ago

Vacuoles ???

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What is endopalsmic reticulam

Posted by Ayush Mamgai 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

The endoplasmic reticulum (ER) is an organelle found in eukaryotic cells only. The ER has a double membrane consisting of a network of hollow tubes, flattened sheets, and round sacs. These flattened, hollow folds and sacs are called cisternae. The ER is located in the cytoplasm and is connected to the nuclear envelope. There are two types of endoplasmic reticulum: smooth and rough ER.

Smooth ER: does not have any ribosomes attached. It is involved in the synthesis of lipids, including oils, phospholipids and steroids. It is also responsible for metabolism of carbohydrates, regulation of calcium concentration and detoxification of drugs.

Rough ER: is covered with ribosomes giving the endoplasmic reticulum its rough appearance. It is responsible for protein synthesis and plays a role in membrane production. The folds present in the membrane increase the surface area allowing more ribosomes to be present on the ER, thereby allowing greater protein production.

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What is tyandal effect

Posted by Aman Jha 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Aman Jha 7 years, 6 months ago

Scattering of light is known as tyandal effect

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What is tyanfal effect

Posted by Aman Jha 7 years, 6 months ago

CBSE > Class 09 > Science

4 answers

Khushi Agrawal 7 years, 6 months ago

This question is wrong. The correct ques. is what is tyndall's effect? The answer of this ques. is scattering of light by the colloidal particle is known as tyndall's effect.

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Dabas Jaat 7 years, 6 months ago

it seems you want to ask about tyndal effect

2Thank You

Khushi Malik 7 years, 6 months ago

What a stupid question

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Aman Jha 7 years, 6 months ago

There is no this type of questions

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Which is the most abundant element in the earth crust

Posted by Ravindra Kumar 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

The mass-abundance of the nine most abundant elements in the Earth's crust is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium 2.0%, and titanium 0.61%.

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As the altitude of a body increases , do wieght and mass both vary and give reason

Posted by Abhinav Saini 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Abhinav Saini 7 years, 6 months ago

Wieght but not mass

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what is deffiuson

Posted by Mayuri Madheshia 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Prathmesh Kadam 7 years, 6 months ago

The intermixing of particles of two diffenwent types of matter on there own is called diffusion

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Prathmesh Kadam 7 years, 6 months ago

In chem

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What is squamous epithelial tissue

Posted by Lavanya Kumar 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Squamous epithelium is single layered cells which perform diffusion.
*They are mainly concentrated in the areas of gas exchange, nutrient and waste exchange and in the filtration areas of kidneys.
*They also secrete lubricating fluid in lining of body cavities.

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What is the meaning of external ATP

Posted by Rishi Jain 7 years, 6 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 6 months ago

Cell contains mitochondria which is known as the powerhouse of the cell as it synthesises ATP(energy currency of the cell). If we supply the external ATP to the cell, the concentration ATP will increase and signal given to mitochondria would stop the production of internal ATP.

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Different between s e r and Rer

Posted by Dhiraj Kumar Kumar 7 years, 6 months ago

CBSE > Class 09 > Science

2 answers

Rishi Jain 7 years, 6 months ago

Rer they have proteins as they are known as on this endoplasmic reticulum there are ribosomes attached so it is known as rer and it is helpful in making Protein synthesis as well as ser means smooth endoplasmic reticulum there are helpful for making lipids and fats synthesise

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Mahtab Rathee 7 years, 6 months ago

SER = smooth endoplasmic reticulum RER = rough endoplasmic reticulum

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Name magnesium hydroxide formulae

Posted by Niharika ? Chaube? 7 years, 6 months ago

CBSE > Class 09 > Science