CBSE > Class 09 > Science | CBSE Board | Homework Help

Evaporation causes cooling because the process require heat energy. the energy is taken away by the molecules when they convert from liquid into gas ,and this causes cooling on the original surface

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Sanket ... 4 years, 4 months ago

Bhul nhi gya bro iska answer to bta do ?

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Piyush ❤️ 4 years, 4 months ago

Hii bhaii sanket yr ap to mujhe bhul he gya

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Sanket ... 4 years, 4 months ago

Mujhe lgta tha heat ki vajah se hota hai ???

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Enlist the causes of infection diseases

Posted by Samiksha Singh 4 years, 4 months ago

CBSE > Class 09 > Science

0 answers

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If the tip of sugarcane plant is removed from the field even it keeps on growing in length It is due to the presence of

Posted by Anindita Sinha 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Shashank Kushwaha 4 years, 4 months ago

Intercalary meristems Because Intercalary meristems can be found in the base of nodes and leaf blades of stems. ... Sugarcane is a monocot plant with nodes that have intercalary meristems. As a result, even if the sugarcane's tip is cut, it can still grow because of the intercalary meristem found at nodes.

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Banshika Thakur 4 years, 4 months ago

Apical meristmatic

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Krissh Sharma 4 years, 4 months ago

Velocity

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What name is given to these atoms ¹⁶O, ¹⁷O, ¹⁸O

Posted by Kushal Omar 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Sia ? 4 years, 3 months ago

Isotopes are two or more types of atoms that have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), and that differ in nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei.

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Kushal Omar 4 years, 3 months ago

Not fully correct

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Deference between kharif crops and rabi crops

Posted by Preet Kaur 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Shashank Kushwaha 4 years, 4 months ago

Kharif crop These crops are usually sown at the beginning of the monsoon season around June and harvested by September or October. Rice, maize, bajra, ragi, soybean, groundnut, cotton are all types of Kharif crops. Rabi crop Crops that are grown in the winter season, from November to April are called Rabi Crops. Some of the important rabi crops are wheat, barley, peas, gram and mustard.

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Thakur Deepali Singh 4 years, 4 months ago

Where found tissue

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Shubham Prasad 4 years, 4 months ago

Kharif crops are the crops which are sown at the beginning of the rainy season, e.g. between April and May. Rabi crops are the crops that are sown at the end of monsoon or at the beginning of winter season, e.g. between September and October. ... Major Rabi crops are wheat, gram, peas, barley etc.

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What will be the momentum if stone heavy mass of 10kg When it is thrown with a velocity 2m/s².

Posted by Manish Kumar 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Jaiditya Sinha 4 years, 4 months ago

How is velocity in m/s²

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Param Sidhu 4 years, 4 months ago

Mometum(p)=mass (m)*velocity (v) Given (m)=10kg,,,,,,,,(v)=2m/s² Therefore momentum =2*10☞20kg ms-¹

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Tanishka Panchal 4 years, 4 months ago

P=m×v =10×2. =20(kg. m/s)

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Uttak kya hai

Posted by Akash Kumar 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Archana Yadav 4 years, 4 months ago

Cluster of cells is call tissue

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Pysices

Posted by Muskan Poriyal 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 4 years, 4 months ago

Motion , force and laws of motion , work and energy and last one is sound .

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Why a dead body floats, with it's head immersed in water ?

Posted by Sahitya Rathore 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Akash Kumar 4 years, 4 months ago

Uttak kya hai

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On immersing an iron nail in CuSO4 solution for few minutes, you will observe

Posted by Your Life 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Sejwal Rupnawar 4 years, 4 months ago

Send

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Blood is the river of life justify the statement

Posted by Abhishek Raj 4 years, 4 months ago

CBSE > Class 09 > Science

1 answers

Jaiditya Sinha 4 years, 4 months ago

Red blood cells or RBCs play an important role by carrying oxygen throughout the body. The RBCs lacks nucleus and most organelles but they carries nutrients and the haemoglobin protein that make the blood red and carry oxygen. It is called as the red river of life as the red colour is due to the presence of haemoglobin that makes the blood red, it flows or circulates in the form of liquid in our body in same way like a river flows and known as life because blood carries oxygen which is required for breathing or survival,without oxygen a person would die.

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*** hormones kya hota in hindi

Posted by Ranjan Bhagat 4 years, 4 months ago

CBSE > Class 09 > Science

2 answers

Devesh Kumar 4 years, 4 months ago

Hormones is a harmones

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Sania Farhat 4 years, 4 months ago

Hormon is a chemical messenger

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Newton law of motions

Posted by Nikhil Thakur 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Param Sidhu 4 years, 4 months ago

Law1☞☞☞☞☞a body will remain in a state of motion or in state of rest until and unless and external force act on it this law is also known as law of inertia Law2☞☞☞☞☞☞according to this law momentum is directly proportional to net force acting on it Law3☞☞☞☞☞☞☞☞every action has an equal and opposite reaction (Fab= -Fba)

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Sanket ... 4 years, 4 months ago

No bro 3 only

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Virat Singh 4 years, 4 months ago

In class 9 there are 4 laws of Newton

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According to the third law of motion action and reaction

Posted by Sumit Kumar 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Param Sidhu 4 years, 4 months ago

According to third law of motion every action and reaction✧✧✧➜ are equal and opposite

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Virat Singh 4 years, 4 months ago

Are equal

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Raiput Aaditya 4 years, 4 months ago

The first two laws of motion till us how an applied force change the motion and provide us with a method of determining the force

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Toshya . 4 years, 4 months ago

Act on two bodies in opposite direction

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Nikhil Thakur 4 years, 4 months ago

Hii

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All formulas of motion and force law and motion

Posted by Shreenath Atpadkar 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

K_Hushii 🍁 4 years, 4 months ago

Ya bro read your science book ch 8 ,9

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Sanket ... 4 years, 4 months ago

Read the book science ch 8,9 bro ?

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Sanket ... 4 years, 4 months ago

F = ma P = mv

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What is displacement formula?

Posted by Arjun Gohil 4 years, 4 months ago

CBSE > Class 09 > Science

5 answers

Param Sidhu 4 years, 4 months ago

Velocity is equal to displacement upon time and ➜➜➜➜➜➜displacement is velocity multiply time

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Sandhya Prajapati😘😘 4 years, 4 months ago

V-u

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Devesh Kumar 4 years, 4 months ago

Displacement = v T

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Shivansh Kumar Srivastava 4 years, 4 months ago

Final position of an object - initial position of the same object

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Sanket ... 4 years, 4 months ago

Final - initial = displacement

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An organelle X, that breath to produce energy in the cell is...

Posted by Rishabh Shivhare 4 years, 4 months ago

CBSE > Class 09 > Science

3 answers

Param Sidhu 4 years, 4 months ago

Mitochondria is the only site for energy in a cell therefore organelle X is mitochondria

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Srishti Raj 4 years, 4 months ago

Mitochondria

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Ishita Sirse 4 years, 4 months ago

Mitochondria

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Difference between mass and weight ? ?

Posted by Sanket ... 4 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Devesh Kumar 4 years, 4 months ago

Babla ho gaya hai kiya

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Diksha Laniya🐥 4 years, 4 months ago

Hello

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Diksha Laniya🐥 4 years, 4 months ago

Weight is the gravitational force acting on the body. Mass is the amount of matter the body contains. Relation between weight and mass is w=mg

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Aaditya Pattaiya 4 years, 5 months ago

. No. Differentiating Property Mass Weight 1 Definition Mass is simply the measure of the amount of matter in a body. Weight is the measure of the amount of force acting on a mass due to acceleration due to gravity. 2 Denotation Mass is denoted by “M”. Weight is denoted by “W”. 3 Formula Mass is always constant for a body and there are several formulas to calculate mass. One way to calculate mass is: Mass = volume × density Weight is the measure of the gravitational force acting on a body. Weight can be calculated from the following formula: Weight = mass × acceleration due to gravity 4 Quantity Type Mass is a bas

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Is weight greater than buoyancy force explain

Posted by Ashish Tomar 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Shreyansh Mishra 4 years, 4 months ago

If an object's average density is less than that of the surrounding fluid, it will float. ... The buoyant force, which equals the weight of the fluid displaced, is thus greater than the weight of the object. Likewise, an object denser than the fluid will sink.

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What is Newton 1 law

Posted by Harshit Yadav 4 years, 5 months ago

CBSE > Class 09 > Science

5 answers

Harshit Yadav 4 years, 4 months ago

N1, 2,3,laws in short

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Ashutosh Se Pandey 4 years, 4 months ago

Newton's first law states us that if an object is at rest or if and object or a body is in motion it does not change its state until any external force applied on it.

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Mr. King 4 years, 4 months ago

According to Newton first law of motion if body is in rest or uniform motion it will be remains until any external force applied on it.

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Komal Yadav Khola 4 years, 5 months ago

According to the newton first law of motion a body is in rest or uniform motion it will be remains until any external force applied on it

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Anonymous Kumar 4 years, 5 months ago

Newton's first law states that an object will be keep moving or keep address stand still and external unbalanced forces act on its

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Issac Newton

Posted by Sanket ... 4 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Arjun Gohil 4 years, 4 months ago

A scientist

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Diksha Laniya🐥 4 years, 5 months ago

No my father said no means no and I am say ok .

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Anyone have sample paper of science...

Posted by Akshara Gupta 4 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Param Sidhu 4 years, 4 months ago

https://t.me/class9term1 ✧✧join this telegram channel and you will get new term 1 study material of all subject including sample papers

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Sandhya Prajapati😘😘 4 years, 4 months ago

Yes I have

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Pratik Upadhyay 4 years, 5 months ago

Yes

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Dayanand Prajapati 4 years, 5 months ago

I have

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Chapter 3

Posted by ᴋᴀʀᴜɴᴀ ɴᴇɢɪ 05 4 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Mànyà Jain 4 years, 4 months ago

Atoms and molecules

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Arjun Gohil 4 years, 4 months ago

Atoms & moleculs

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A car complete 3.0m/s and after travelling 2hour so it complete 3.0m/s and the driver applies break slowly and stops 10 s. So the car travelled farther after the break were applied.

Posted by Jahanavi Dobhal 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Param Sidhu 4 years, 4 months ago

u➜3m/s,,,v➜0m/s,,,,t➜10s to find s We'll first find acceleration a=0-3/10=0.3m/s² Now using s=ut+½at² We get s=3*10+½*0.3*100☞☞s=30+15✧✧➜➜☞☞s=45m show the car will travel 45 m further after the brakes applied

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What is immunisation ? How will you improve it ?

Posted by Payal Kumari 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Nitish Kumar 4 years, 5 months ago

Immunization is the process of giving a vaccine to a person to protect them against disease. Immunity (protection) by immunization is similar to the immunity a person would get from disease, but instead of getting the disease you get a vaccine

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Who discover dead cell

Posted by Naresh Shura 4 years, 5 months ago

CBSE > Class 09 > Science