Ask questions which are clear, concise and easy to understand.

Mixture

Rishika Rawat 22 hours ago

Solution: Air is a mixture and not a compound because: Air does not have a formula like a mixture, while compounds have a fixed formula. When air is formed by gases, there is no energy change. Properties of air are variable and subjective to time and place.

Mometum. Before Collision =Momentum After Collision

Rishika Rawat 22 hours ago

An example of law of conservation of momentum is Newton's cradle, a device where, when one ball is lifted and then let go, the ball on the other end of a row of balls will push upward. ...

Naveen Sharma 1 day, 2 hours ago

Law of conservation of momentum shows that a object will remain in motion until any external force is not applied example : cradle .

Smrity Verma 17 hours ago

Every object in the universe attracts every other object with a force of attraction which is known as grarvitation

Mandeep Kaur 2 days, 23 hours ago

Why do we have to use the s=ut+1/2 at^2 formula? The mathematically proven equations are as follows (1) First equation of Motion: V = u + at soln. Consider a body of mass “m” having initial velocity “u”.Let after time “t” its final velocity becomes “v” due to uniform acceleration “a”. Now we know that: Acceleration = change in velocity/Time taken => Acceleration = Final velocity-Initial velocity / time taken => a = v-u /t =>at = v-u or v = u + at This is the first equation of motion. (2) Second equation of motion: s = ut + 1/2 at^2 sol. Let the distance travelled by the body be “s”. We know that Distance = Average velocity X Time Also, Average velocity = (u+v)/2 .: Distance (t) = (u+v)/2 X t …….eq.(1) Again we know that: v = u + at substituting this value of “v” in eq.(2), we get s = (u+u+at)/2 x t =>s = (2u+at)/2 X t =>s = (2ut+at^2)/2 =>s = 2ut/2 + at^2/2 or s = ut +1/2 at^2 This is the 2nd equation of motion. Hope u got it.

Rishika Rawat 22 hours ago

For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision. That is, the momentum lost by object 1 is equal to the momentum gained by object 2.

Yashi Choudhary 2 days, 16 hours ago

Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.

Balkrishna Mishra 1 day, 1 hour ago

Rate of change of momentum is directly proportional to unbalanced force applied on it

Balkrishna Mishra 1 day, 1 hour ago

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.
• 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.

Nivethitha Maheswaran 2 days, 17 hours ago

The rate of change of momentum is directly proportional to the applied unbalanced force in the direction of force

Sanket 😞 2 days, 22 hours ago

F = m × a

Saloni Sharma 2 days, 22 hours ago

The applied force is directly proportional to the rate of change of linear momentum

Sia 🤖 3 days ago

Theory that cells are the basic structural, functional, and organizational units of both single-celled and multicellular organisms; cells divide and pass on hereditary information; and energy flows within cells.

Alice Soreng 3 days, 4 hours ago

Collenchyma; .Consist of cell .Intercellular space is not present. .Cell tightly packed. .Deposition of pectin in cell. .Provide flexibility. Sclerenchyma; . Consist of dead cell. .Intercellular space is not present. .cell tightly packed. .Deposition of liginin in cell. . provide hardness.

Alka Darade 3 days, 7 hours ago

Answer is) Both assertion and reason are true but reason is not correct explaintion of assertion

Kumkum Sharma Kumkum Sharma 3 days, 14 hours ago

Yes

Chandana Kumari 2 days, 3 hours ago

Collenchyma

Sanchit Sharma 3 days, 20 hours ago

Collenchyma

Sia 🤖 3 days ago

Where are the options?

Chandana Kumari 2 days, 3 hours ago

(a) inertia of motion

Ashvini Pandey 3 days, 1 hour ago

Inertia of motion

Md Zaid Ali 3 days, 19 hours ago

À

Dipika Kumari 4 days, 5 hours ago

(a) inertia of motion

Sia 🤖 3 days, 19 hours ago

Cannot be changed

Sia 🤖 3 days, 19 hours ago

silver bromide is a pure substance because it is made up of silver and bromine and free from another kind of mixtures.

Sia 🤖 3 days, 22 hours ago

Let the mass of sodium sulphate required be 'x' g
The mass of water = 100 g
The mass of solution =(mass of sodium sulphate + mass of water) = (x + 100)g
Percentage of sodium sulphate in solution {tex}=\;\frac{Mass\;of\;sodium\;sulphate}{Mass\;of\;solution}\times100{/tex}
{tex}20=\frac{x}{x+100} \times 100{/tex}
20x + 2000 = 100x
80x = 2000
x = {tex}\frac{2000}{80}{/tex}
= 25 g
Therefore,  the mass of sodium sulphate required is 25 g.

Vansh Gupta Gupta 4 days, 15 hours ago

Nikita Bhiduri 2 days, 17 hours ago

Thanks to all

Annie Sharma 4 days, 15 hours ago

Average Velocity = total distance/ total time = (20+30+10) / (1+1+1) = 60/3 = 20 Km/h

Shubham Kumar 5 days, 2 hours ago

20km/h

Aman Kumar 5 days, 18 hours ago

60/3=20km/h

Samridhi Goyal 5 days, 18 hours ago

See train moves straight so distance and displacement are same Average velocity=total displacement/total time taken So 20+30+10/1+1+1 =60/3 =20 m/s so according to me it should be 20

Nikita Bhiduri 5 days, 19 hours ago

Option nahi aa raha upload karne ka

Vipin Verma 5 days, 20 hours ago

How to practice of exam

Khushboo Pathan 6 days, 2 hours ago

Name types of simple tissues.

Annie Sharma 4 days, 14 hours ago

Man pushes water in the backward direction with a force, an equal amount of force is applied by water on the man in the forward direction. Newton's third law of motion.

Mohammed Junaid T.K Patel 5 days, 23 hours ago

By kicking hands and legs OK

Sia 🤖 4 days, 19 hours ago

It is the cells which is present in the blood that helps the blood to stop running out of body. They make a clot to stop the blood.

Vansh Gupta Gupta 4 days, 15 hours ago

Platelets, or thrombocytes, are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding. Platelets are made in our bone marrow, the sponge-like tissue inside our bones.

Suraj Singh 5 days, 18 hours ago

J.J Thomas was Greek scientist .he is known for his invention of cathod rays

Arshad Ali Nohary 6 days, 15 hours ago

Structure of the atom

Shubham Kumar 6 days, 13 hours ago

Water=H2O

Priyanka Kumari 6 days, 19 hours ago

Thank u
Parenchyma-1)They are loosely arranged. 2)They are made up of living cells. 3)It stores food. 4)It also provides mechanical support to plants. Collenchyma-1) There is very little intercellular space. 2)They are made up of living cells. 3)It provides flexibility to plants. 4) It also provides mechanical support to plants. Sclerenchyma-1) There is no intercellular spaces. 2) They are made up of dead cells. 3) It provides hardness and stiffness as well as strength to plants. 4) It also provides mechanical support to plants. Thank you🥰🥰

Vansh Gupta Gupta 4 days, 15 hours ago

Vaibhav Mehta 1 week ago

50 km per hour

Sanket 😞 1 week ago

S = 2400km - 2000km = 400km T = 8h Average speed = distance travelled / time taken S/T = 400km/8h =50km h -1 ## myCBSEguide

Trusted by 1 Crore+ Students

#### CBSE Test Generator

Create papers in minutes

Print with your name & Logo

3 Lakhs+ Questions

Solutions Included

Based on CBSE Blueprint

Best fit for Schools & Tutors

#### Work from Home

• Work from home with us
• Create questions or review them from home

No software required, no contract to sign. Simply apply as teacher, take eligibility test and start working with us. Required desktop or laptop with internet connection