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Arman 😚😂🤭😆 1 year ago

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Krishna Saroj 1 year ago

9th class mid term 20/9/2023

5Thank You

ANSWER

The particle size of a colloid is

Posted by Ekta Rathi 1 year ago

CBSE > Class 09 > Science

4 answers

Ayush Vishwakarma 1 year ago

Size of colloid particle is 1nm

Siya Sharma 1 year ago

1nm

Arpit Yadav 1 year ago

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

Krishna Saroj 1 year ago

Mid term

ANSWER

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

Posted by Aditya Kumar 1 year ago

CBSE > Class 09 > Science

2 answers

Nitish Singh 11 months, 4 weeks ago

cardiac muscle is present in heart

Khushi Kumari 1 year 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 ago

CBSE > Class 09 > Science

2 answers

Yojitha R 1 year ago

I don't know

4Thank You

Sujeet Samal 1 year 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 ago

CBSE > Class 09 > Science

1 answers

Manya Pal 1 year 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 ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is reproduction in dog

Posted by Mamta Meena 1 year ago

CBSE > Class 09 > Science

1 answers

Harveen Kaur 1 year ago

Sexual reproduction

ANSWER

I went to challenge everyone

Posted by Abdul Rahman Gazi 1 year ago

CBSE > Class 09 > Science

2 answers

Chandra Kala 1 year ago

Don't post personal information, mobile numbers and other details.
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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.

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Mamta Meena 1 year ago

ANSWER

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

Posted by Rajat Singh 1 year ago

CBSE > Class 09 > Science

4 answers

Kulnoor Kaur 1 year ago

Parenchyma - Cellulose Collenchyma - Pectin Sclerenchyma - Lignin

Aditya Kumar 1 year ago

Ans.

Aditya Kumar 1 year ago

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

Kirti Saini 1 year 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 ago

CBSE > Class 09 > Science

1 answers

V.Vicknesh Adaikalam V.Vicknesh Adaikalam 11 months, 4 weeks 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 ago

CBSE > Class 09 > Science

5 answers

Arman 😚😂🤭😆 1 year ago

Don't post personal information, mobile numbers and other details.
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Ilma Arif 1 year 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 ago

epidemic cell are protective cell of plant

Yogita Rana 1 year ago

Dessication not dedication

Yogita Rana 1 year 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 ago

CBSE > Class 09 > Science

2 answers

Ajitesh Singh Solanki 1 year 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 ago

What is meant by a alloys

3Thank You

ANSWER

Find the volume of an unshaped stone

Posted by Saket Kashyap 1 year ago

CBSE > Class 09 > Science

1 answers

Vanshika Rathi 1 year ago

What's matter

4Thank You

ANSWER

Meristimetic tissue

Posted by Payal Sahu 1 year ago

CBSE > Class 09 > Science

4 answers

A A 1 year ago

Dividing tissue

Ilma Arif 1 year 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 ago

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

Saket Kashyap 1 year 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 ago

CBSE > Class 09 > Science

0 answers

ANSWER

Why does on ice melt when put out of refrigerator

Posted by Prince Kumar 1 year ago

CBSE > Class 09 > Science

4 answers

Anyang Gogoi 11 months, 4 weeks ago

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

A A 1 year ago

Temperature

Ilma Arif 1 year ago

Because the temperature start rising

Mukesh Kumar 1 year ago

Ice cube melt because of laten heat

ANSWER

Which tissue cell remain in continues state of division

Posted by Ramanpreet Sidhu 1 year ago

CBSE > Class 09 > Science

2 answers

Yogita Rana 1 year 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 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 ago

CBSE > Class 09 > Science

1 answers

Manya Pal 1 year 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 ago

CBSE > Class 09 > Science

2 answers

Manya Pal 1 year 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 ago

ANSWER

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

Posted by Tarun Nagar 1 year ago

CBSE > Class 09 > Science

5 answers

Abbas Khan Abbas Khan 1 year ago

Motion

Alok Mishra 1 year ago

At rest because it not change it position

Pragya Sharma 1 year 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 ago

At rest

Inderjit Singh 1 year ago

At rest because they do not change distance with time

ANSWER

Who invited me

Posted by Abhiram Vivekanandhan 1 year ago

CBSE > Class 09 > Science

4 answers

Harshdeep Singh 1 year 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.

Garvit Varshney 1 year ago

Namoonw

Drishti Tomar 📚📒✍️ 1 year 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 ago

ANSWER

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

Posted by Roshni Asrani 1 year ago

CBSE > Class 09 > Science

4 answers

Surat Sakhi Ghai. 1 year ago

Alka Jaiswal 1 year ago

Endoplasmic reticulum

Piyush Aswal 1 year ago

Endoplasmic reticulum

Abhiram Vivekanandhan 1 year ago

ANSWER

Define villi

Posted by Satyam Kumar 1 year ago

CBSE > Class 09 > Science

1 answers

Keshav Kumar 1 year 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 ago

CBSE > Class 09 > Science

5 answers

Surat Sakhi Ghai. 1 year ago

Squamous epithelium

Iitian Manish 1 year ago

Squamous epithelium tissue

Keshav Kumar 1 year ago

lining of blood vessels is made up of squamous epithelium

Harmanpreet Kaur 1 year ago

Epithelial tissues... May be

Harshpreet Kaur 1 year 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 ago

CBSE > Class 09 > Science

1 answers

Harshpreet Kaur 1 year 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 ago

CBSE > Class 09 > Science

2 answers

Satyam Kumar 1 year ago

Aditya Kumar 1 year ago

A car run

5Thank You

ANSWER

Who coined the term atom

Posted by Radhika Tiwari 1 year ago

CBSE > Class 09 > Science

2 answers

Harshpreet Kaur 1 year 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 ago

Democritus

ANSWER

I need chemistry chapter 1

Posted by Nikhil Kal Kal 1 year ago

CBSE > Class 09 > Science

2 answers

Keshav Kumar 1 year ago

Chapter 1 is matter in our surroundings

Aman Yadav 1 year 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 ago

CBSE > Class 09 > Science

1 answers

Harshpreet Kaur 1 year 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 \(a_{\text{Earth}}\).