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Arman 😚😂🤭😆 1 year, 2 months ago

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Krishna Saroj 1 year, 2 months ago

9th class mid term 20/9/2023

5Thank You

ANSWER

The particle size of a colloid is

Posted by Ekta Rathi 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

Ayush Vishwakarma 1 year, 2 months ago

Size of colloid particle is 1nm

Siya Sharma 1 year, 2 months ago

1nm

Arpit Yadav 1 year, 2 months ago

A body has a 20 m per second and find the velocity

Krishna Saroj 1 year, 2 months ago

Mid term

ANSWER

What are the similarities and differences between stratified and cardiac muscle tissue

Posted by Aditya Kumar 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Nitish Singh 1 year, 2 months ago

cardiac muscle is present in heart

Khushi Kumari 1 year, 2 months ago

What si synpse

ANSWER

A object has mass 10 kg moving with uniform acceleration with force 500N .what will be the momentum

Posted by Sejal Jain 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Yojitha R 1 year, 2 months ago

I don't know

4Thank You

Sujeet Samal 1 year, 2 months ago

m=10,F=500N, F=ma a=F/m =500/10 =50m/s²

ANSWER

Liquids generally have lowered in density as compared to solid. S, but you must have observed that ice floats on water found out why.

Posted by Gitika Manral 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Manya Pal 1 year, 2 months ago

Because the ice cube or iceberg contains air on it that's why the ice float on water

ANSWER

An object experience a net zero external unbalanced force , .is it possible for the object to be traveling with non zero velocity if yes state the condition that must be placed on the magnitude and direction of the velocity. If no provide a reason

Posted by Madhusmita Baskey 1 year, 2 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is reproduction in dog

Posted by Mamta Meena 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Harveen Kaur 1 year, 2 months ago

Sexual reproduction

ANSWER

I went to challenge everyone

Posted by Abdul Rahman Gazi 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Chandra Kala 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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Mamta Meena 1 year, 2 months ago

ANSWER

Differentiate between parenchyma, collenchyma, sclerenchyma on the basis of their cell wall.

Posted by Rajat Singh 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

Kulnoor Kaur 1 year, 2 months ago

Parenchyma - Cellulose Collenchyma - Pectin Sclerenchyma - Lignin

Aditya Kumar 1 year, 2 months ago

Ans.

Aditya Kumar 1 year, 2 months ago

The answer is given in the cbse sample paper just take a look

Kirti Saini 1 year, 2 months ago

Yes

ANSWER

A) Why Compressed natural gas (CNG) is used as fuel these days in vehicles? B) How aquatic plants and animals able to breathe? C) Why rate of diffusion is faster in liquids than in solids? D) Which property of fluids helps them to flow?

Posted by Divit Gupta 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

V.Vicknesh Adaikalam V.Vicknesh Adaikalam 1 year, 2 months ago

A) Compressed natural gas is being used in these days because of more pollution evalvated by petrol,diesel and coal

ANSWER

What are Epidermis cells? Where are they found and what are there functions?

Posted by Anupoma Bor.Gohain 1 year, 2 months ago

CBSE > Class 09 > Science

5 answers

Arman 😚😂🤭😆 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
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Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Ilma Arif 1 year, 2 months ago

Epidermis cell are the outer most cell layer There function is to protect plants from infections , dedication and to prevent the loss of water They also contain stomata Hope its help.... If it is helpful do like 👍💫🌻✨

3Thank You

Pandit Sharma 1 year, 2 months ago

epidemic cell are protective cell of plant

Yogita Rana 1 year, 2 months ago

Dessication not dedication

Yogita Rana 1 year, 2 months ago

Epidermis cells are the protective cells of plant,they cover the outermost covering (external surface)of plant and they protect the plant from infection and dedication ,also prevent the lose of water from internal tissue

ANSWER

What is masterpasion

Posted by Viney Singh 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Ajitesh Singh Solanki 1 year, 2 months ago

Alloys are mixture of two or more metals or a metal and a non - metal and cannot be separated into their components by physical methods. Example : - Brass , copper + Zinc

Sourabh Sharma 1 year, 2 months ago

What is meant by a alloys

3Thank You

ANSWER

Find the volume of an unshaped stone

Posted by Saket Kashyap 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Vanshika Rathi 1 year, 2 months ago

What's matter

4Thank You

ANSWER

Meristimetic tissue

Posted by Payal Sahu 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

A A 1 year, 2 months ago

Dividing tissue

Ilma Arif 1 year, 2 months ago

It is called dividing tissue...it helps plant to grow They are of 3 types ✓Apical ✓lateral ✓inter calary Hope its helps Do like it

Rishabh Rathore 1 year, 2 months ago

Is known as cell division Occurrence -- root and shoot ( growing region of plants )

Saket Kashyap 1 year, 2 months ago

Tissue helping in growth of plants

3Thank You

ANSWER

A stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25m/s. Calculate when and where the two stones meet.

Posted by Vivek Agrawal 1 year, 2 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Why does on ice melt when put out of refrigerator

Posted by Prince Kumar 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

Anyang Gogoi 1 year, 1 month ago

from surroundings and all the is used to break the intermolecular force of attraction between the particles of matter

A A 1 year, 2 months ago

Temperature

Ilma Arif 1 year, 2 months ago

Because the temperature start rising

Mukesh Kumar 1 year, 2 months ago

Ice cube melt because of laten heat

ANSWER

Which tissue cell remain in continues state of division

Posted by Ramanpreet Sidhu 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Yogita Rana 1 year, 2 months ago

Ice melts because of latent heat of fusion.it absorb heat from surroundings and all the is used to break the intermolecular force of attraction between the particles of matter

Saniya Saifi 1 year, 2 months ago

Meristematic tissue

ANSWER

A 40 kg shell is moving with a velocity of 72 km/h . It explodes into two pieces , of which one piece of mass 15 kg stops immediately. Calculate the velocity of the other piece .

Posted by Sayed Hamza Parvez 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Manya Pal 1 year, 2 months ago

52.36363636363636

ANSWER

liquid generally have lower density as compared to solid but you must have observed that ice floats on water find out why

Posted by Piyush Aswal 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Manya Pal 1 year, 2 months ago

Because the ice berg contains air in it because when water get freezed the water contain air in it that's why ice float on water

Deepak Kumar 1 year, 2 months ago

ANSWER

Discuss weather the wall of your classroom are at rest or in motion

Posted by Tarun Nagar 1 year, 2 months ago

CBSE > Class 09 > Science

5 answers

Abbas Khan Abbas Khan 1 year, 2 months ago

Motion

Alok Mishra 1 year, 2 months ago

At rest because it not change it position

Pragya Sharma 1 year, 2 months ago

The wall of the classroom is not moving or changing its position, it means that it is at rest, because if any object does not change its position, it means that it is rest

Alka Jaiswal 1 year, 2 months ago

At rest

Inderjit Singh 1 year, 2 months ago

At rest because they do not change distance with time

ANSWER

Who invited me

Posted by Abhiram Vivekanandhan 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

Harshdeep Singh 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Garvit Varshney 1 year, 2 months ago

Namoonw

Drishti Tomar 📚📒✍️ 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Abhiram Vivekanandhan 1 year, 2 months ago

ANSWER

Where are the essential proteins and lipids required for cell membrane are manufactured

Posted by Roshni Asrani 1 year, 2 months ago

CBSE > Class 09 > Science

4 answers

Surat Sakhi Ghai. 1 year, 2 months ago

Alka Jaiswal 1 year, 2 months ago

Endoplasmic reticulum

Piyush Aswal 1 year, 2 months ago

Endoplasmic reticulum

Abhiram Vivekanandhan 1 year, 2 months ago

ANSWER

Define villi

Posted by Satyam Kumar 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Keshav Kumar 1 year, 2 months ago

Villi are finger-like projections which are richly supplied with blood vessels. They are present in the inner lining of the small intestine and help in the absorption of nutrients by increasing the surface area for absorption.

ANSWER

What is the lining of blood vesseles made up of

Posted by Rehan Sayyed 1 year, 2 months ago

CBSE > Class 09 > Science

5 answers

Surat Sakhi Ghai. 1 year, 2 months ago

Squamous epithelium

Iitian Manish 1 year, 2 months ago

Squamous epithelium tissue

Keshav Kumar 1 year, 2 months ago

lining of blood vessels is made up of squamous epithelium

Harmanpreet Kaur 1 year, 2 months ago

Epithelial tissues... May be

Harshpreet Kaur 1 year, 2 months ago

The lining of blood vessels is made up of a layer called the endothelium. The endothelium is a single layer of cells that lines the inner surface of blood vessels, including arteries, veins, and capillaries. It plays a crucial role in regulating blood flow, maintaining vascular tone, and preventing blood clot formation by releasing various signaling molecules and controlling the passage of substances in and out of the bloodstream.

ANSWER

An object experience a net zero external unbalanced force. Is it possible for the object to be traveling with a non zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.

Posted by Aman Rathore 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Harshpreet Kaur 1 year, 2 months ago

if an object is moving at a constant velocity in a straight line and the net external unbalanced force acting on it is zero, then it will continue to move with that non-zero velocity. This is in accordance with Newton's first law of motion, which states that an object in motion (or at rest) will stay in motion (or at rest) unless acted upon by an external unbalanced force.

ANSWER

A force of 5 N produces an acceleration of 8ms rest to -2 on a mass M1 and an acceleration of 24ms rest to -2on a mass m2 what acceleration would the same force provide if both the masses are tied together

Posted by Shlok Kawade 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Satyam Kumar 1 year, 2 months ago

Aditya Kumar 1 year, 2 months ago

A car run

5Thank You

ANSWER

Who coined the term atom

Posted by Radhika Tiwari 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Harshpreet Kaur 1 year, 2 months ago

The term "atom" can be traced back to ancient Greece. The word "atom" is derived from the Greek word "atomos," which means "indivisible" or "uncuttable." The concept of atoms as fundamental, indivisible particles was first proposed by the ancient Greek philosopher Leucippus and his student Democritus in the 5th century BCE. They hypothesized that all matter is composed of these tiny, indivisible particles called atoms, although their understanding of atoms was quite different from our modern atomic theory.

Anup Soni 1 year, 2 months ago

Democritus

ANSWER

I need chemistry chapter 1

Posted by Nikhil Kal Kal 1 year, 2 months ago

CBSE > Class 09 > Science

2 answers

Keshav Kumar 1 year, 2 months ago

Chapter 1 is matter in our surroundings

Aman Yadav 1 year, 2 months ago

Matter in our surroundings

ANSWER

Calculate the gravitational force of attraction between a stone weighing 1 kilogram and the earth is waving 6 into 10 raise to power 24 kilogram what will be the acceleration produced in the stone second acceleration produced in the earth radius of earth equal to 6.4 into 10 raise to power 6 km and g equal to 6.67 into 11 NM square upon kg

Posted by Shikha Chaudhary 1 year, 2 months ago

CBSE > Class 09 > Science

1 answers

Harshpreet Kaur 1 year, 2 months ago

To calculate the gravitational force of attraction between the stone and the Earth and the accelerations produced, we can use Newton's law of universal gravitation: \[F = \frac{{G \cdot (m1 \cdot m2)}}{{r^2}}\] Where: - \(F\) is the gravitational force of attraction between the two objects. - \(G\) is the gravitational constant, which is approximately \(6.67 \times 10^{-11} \, \text{N} \cdot \text{m}^2/\text{kg}^2\). - \(m1\) is the mass of the stone, which is 1 kilogram (\(1 \, \text{kg}\)). - \(m2\) is the mass of the Earth, which is \(6 \times 10^{24} \, \text{kg}\). - \(r\) is the distance between the center of the Earth and the stone, which is the radius of the Earth plus the height at which the stone is located. First, let's convert the radius of the Earth from kilometers to meters: \[r = 6.4 \times 10^6 \, \text{km} = 6.4 \times 10^6 \times 1000 \, \text{m} = 6.4 \times 10^9 \, \text{m}\] Now, we can calculate the gravitational force of attraction between the stone and the Earth: \[F = \frac{{6.67 \times 10^{-11} \, \text{N} \cdot \text{m}^2/\text{kg}^2 \cdot (1 \, \text{kg} \cdot 6 \times 10^{24} \, \text{kg})}}{{(6.4 \times 10^9 \, \text{m})^2}}\] Calculating this expression will give us the gravitational force of attraction (\(F\)) between the stone and the Earth. The acceleration produced in the stone (\(a_{\text{stone}}\)) can be found using Newton's second law (\(F = m \cdot a\)), and the acceleration produced in the Earth (\(a_{\text{Earth}}\)) can be calculated using the same formula, considering the mass of the Earth. Let's calculate \(F\), \(a_{\text{stone}}\), and \(a_{\text{Earth}}\).