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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 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Param Sidhu 2 years, 10 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

ANSWER

What is immunisation ? How will you improve it ?

Posted by Payal Kumari 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Nitish Kumar 2 years, 10 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

ANSWER

Who discover dead cell

Posted by Naresh Shura 2 years, 10 months ago

CBSE > Class 09 > Science

5 answers

Manju Kumari 2 years, 10 months ago

Robert Hooke 1665

Khushi Prajapati 2 years, 10 months ago

Robert Hooke discover the cell in 1665 while observing the thin slices of crok

Ankit Patel 2 years, 10 months ago

Robert hooke

Jahanavi Dobhal 2 years, 10 months ago

Robert hooke in London 1665

Neha Bohra 2 years, 10 months ago

Robert hook

ANSWER

Uniform circular motion ?

Posted by Sanket ... 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Sania Bhatia 2 years, 10 months ago

B

ANSWER

What is the functional unit of Golgi apparatus

Posted by Himanshu Roy 2 years, 10 months ago

CBSE > Class 09 > Science

3 answers

Vikash Yadav 2 years, 10 months ago

E

Sarthak Kumar Prajapati 2 years, 10 months ago

Cristernae

Himanshu Roy 2 years, 10 months ago

Cisternae

ANSWER

a 10g bullet traveling at 200 m/s strikes and remains embedded in a 2 kg target which is originally at rest but free to move

Posted by Shivendra Singh 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Ankit Patel 2 years, 10 months ago

0.995

ANSWER

What is a element??

Posted by Chahak Chandani 2 years, 10 months ago

CBSE > Class 09 > Science

2 answers

Manpreet Kaur 2 years, 10 months ago

The substance which cannot be spilt into it's simpler form by applying heat, light and electricity

Honey Sharma 2 years, 10 months ago

A basic form of matter that cannot be break down by chemical reaction

ANSWER

Distance of sun from earth

Posted by Avinity Singh 2 years, 10 months ago

CBSE > Class 09 > Science

2 answers

Param Sidhu 2 years, 10 months ago

You can find this by taking the time taken of sun rays as eight minutes and by considering the speed of light then It this values in in the formula of speed it is speed is equal to distance upon Time

Arpit Gautam 2 years, 10 months ago

148.57 million km

ANSWER

What are types of plant and animal kingdom ?

Posted by Priyanshu Kumar Palo 2 years, 10 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

According to the second law of motion,Force is the cause and outcome of_____ a.accaration b. Impulse c. Momentum d.energy

Posted by Sarthak Gupta 2 years, 10 months ago

CBSE > Class 09 > Science

5 answers

Srishti Raj 2 years, 10 months ago

Momentum

Ankit Patel 2 years, 10 months ago

Momentum

Saroj Jangid 2 years, 10 months ago

Momentum..

Priyanshu Kumar Palo 2 years, 10 months ago

Momentum

Srihari P 2 years, 10 months ago

momentum

ANSWER

Define 1 J of work ?

Posted by Sanket ... 2 years, 10 months ago

CBSE > Class 09 > Science

2 answers

Diksha Laniya🐥 2 years, 10 months ago

What sanket

Sanket ... 2 years, 10 months ago

1 Joule is amount of work done when a force of 1 Newton displaces a body through a distance of 1m in the direction of the force applied. (Google kr liya ) ?

ANSWER

how many chromosome are present in a cell

Posted by Sri Bhuvaragavan 2 years, 10 months ago

CBSE > Class 09 > Science

4 answers

Manju Kumari 2 years, 10 months ago

46 and 23 pair

Rutika Tilekar 2 years, 10 months ago

23 pairs

Rithya Reddy 2 years, 10 months ago

23 pairs Total no - 46

Vishal Mishra 2 years, 10 months ago

How

ANSWER

Define Aerenchyma

Posted by Shubh Barnwal 2 years, 10 months ago

CBSE > Class 09 > Science

2 answers

Ankit Patel 2 years, 10 months ago

Paranchyma contain air cavities in it . It helps aquatic plant to float on water so it is called aerenchyma

Divyansh Jain 2 years, 10 months ago

The paranchyma cells which have large air cavities to provide buoyancy to the plant are known as aerenchyma.

ANSWER

Aerenchyma

Posted by Shubh Barnwal 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Ishita Sirse 2 years, 10 months ago

Aerenchyma is type of parenchyma which has large cavities and it is present in aquatic plants

ANSWER

Is there any difference between weight and mass?

Posted by Arjun Gohil 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 2 years, 10 months ago

Yes , (I)Mass is a measure of how much force it will take to change that path. Mass depends on how much matter atoms and so on there is in an object; more mass means more inertia, as there is more to get moving.(ii) Weight, on the other hand, is a measure of the amount of downwards force that gravity exerts on an object

ANSWER

What is work done formula?

Posted by Arjun Gohil 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 2 years, 10 months ago

Work done = force × displacement

ANSWER

Write a relation between the mass and weight of the body with explanation

Posted by Sweety Yadav 2 years, 10 months ago

CBSE > Class 09 > Science

1 answers

Mayank Chaudhary 2 years, 10 months ago

Mass of a body is the quantity of of matter (or material) contain in it. Weight of a body is the force with which it is attracted towards the centre of the earth.

ANSWER

Mirror formula is a relation between object distence , image distence and focal length of a spherical mirror it can be written as 1/u+1/v,R is radius of curvature of the mirror.this formula is valid in all situation for all spherical mirror for all posion of the object consider the case in which a mirror forms a real image of height 4 cm of an object of hieght 1 cm is placed 20 cm away from the mirror ..the distence from the object to image is?

Posted by Anusha Shankar Anusha Shankar 2 years, 10 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

a motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of. its velocity has slowed down to 36km/h in 4 sec by a force. calculate the accleration and change in momentum. Also find the ammount of force requried.

Posted by Princy Gupta 2 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Rk Gamers 2 years, 11 months ago

You had left a single information of initial velocity

ANSWER

Which of the following tissue has dead cell

Posted by Kartik Meena 2 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Arpit Gautam 2 years, 10 months ago

Sclernchyma

Dhanush S 2 years, 11 months ago

Scherenchyma

Balkrishna Mishra 2 years, 11 months ago

Sclerenchymatous

Sanket ... 2 years, 11 months ago

Sclerenchyma is right ans ?

Kartik Meena 2 years, 11 months ago

Epithelial

ANSWER

Who is the father of biology

Posted by Anurag Kumar 2 years, 11 months ago

CBSE > Class 09 > Science

4 answers

Aviral Tiwari 2 years, 10 months ago

Aristotle

Rishma Bhuyan 2 years, 10 months ago

Aristotle

Mohini Raj 2 years, 11 months ago

Aristotle

Yuvan Yuvan 2 years, 11 months ago

Aristotle

ANSWER

HW- Science Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’. • Suma is swimming in a pond. • A donkey is carrying a load on its back. • A wind-mill is lifting water from a well. • A green plant is carrying out photosynthesis. • An engine is pulling a train. • Food grains are getting dried in the sun. • A sailboat is moving due to wind energy. Complete it in your physics copy and submit tomorrow.

Posted by Aasutosh Sahu 2 years, 11 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

Measure the time it takes you to walk from your house to your bus stop or the school. If you consider that your average walking speed is 4 km/h estimate the distance if the bus stop or school from your house.

Posted by Prastuti Baruah 2 years, 11 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is AIDS virus ?

Posted by Sanket ... 2 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Jaiditya Sinha 2 years, 10 months ago

The term AIDS refers to Acquired Immune Deficiency Syndrome caused by the HIV virus. AIDS is a condition in which the person's immune system weakens to an extent where it is unable to fight any infection.

Yuvan Yuvan 2 years, 11 months ago

HIV causes AIDS and interferes with the body's ability to fight infections

Sanket ... 2 years, 11 months ago

This is just for information not for fun ok ?

ANSWER

? what is the name of that ? Where did it come from? ? People are thinking this as what ??what are the side-effects of this? ? What we can do to prevent this ??? Give example also which we can see this most ? ??

Posted by Ganesh P 2 years, 11 months ago

CBSE > Class 09 > Science

4 answers

Ganesh P 2 years, 10 months ago

Answer : corona

Pratham Maurya 2 years, 11 months ago

Carona

Sanket ... 2 years, 11 months ago

I think bacteria ?

Ganesh P 2 years, 11 months ago

??? find name of this side image

ANSWER

Name any two groups of mirco- organisms from which antibiotics could be extractet

Posted by J I 2 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Param Sidhu 2 years, 10 months ago

Bacteria and Fungi

Yuvan Yuvan 2 years, 11 months ago

(Streptomyches produces streptomycin), (penicillin produced by penicillium moulds

J I 2 years, 11 months ago

Ans

ANSWER

How much big is our world

Posted by Sandhiya Sri 2 years, 11 months ago

CBSE > Class 09 > Science

3 answers

Honey Sharma 2 years, 10 months ago

Beyond ur imagination

Yuvan Yuvan 2 years, 11 months ago

5.972*10^24 kg

Nivetha S 2 years, 11 months ago

5.972 × 10^24 kg

ANSWER

What is p in science ?

Posted by Sanket ... 2 years, 11 months ago

CBSE > Class 09 > Science

5 answers

Sia ? 2 years, 11 months ago

p = m x v. This equation signifies that momentum of a body is the product of its mass and its velocity. Here, p is momentum of the body. m is the mass of the body. v is the velocity of the body.

Sanket ... 2 years, 10 months ago

Thanks ? vese pta tha

Renuka Patil 2 years, 11 months ago

In science p it is the symbol of momentum. P=mv. This equation tells us that momentum of a body is product of It's mass as well as it's velocity. In the above given equation p denotes the momentum of the body, m denotes the mass of the body and v denotes the velocity of the body. You can study it more deeply in science 9 std chapter motion.

Piyush Raj 2 years, 11 months ago

In science, p is symbol of momentum. p=mv

Ishita Sirse 2 years, 11 months ago

The p in science is symbol momentum ..

ANSWER

Why do we breathe?

Posted by Raj Dhwaj Raj 2 years, 11 months ago

CBSE > Class 09 > Science

4 answers

Param Sidhu 2 years, 10 months ago

Breathing is an involuntary activity which we can't control it is required to overall control the coordination of body from the blood to the functioning of it since we breathe oxygen as it is required for the blood to circulate and other body organs to produce energy you can understand this with an example you would have a bike a bike need a fuel which may be petrol and this is required essentially for the working of the bike if the fuel is not provided to the bike then we can't utilise bike in the similar way oxygen is is fuel for our body which can only be consumed by breathing so this is the big reason why we breathe and this is also the reason behind it an involuntary activity performed by involuntary muscles you may also have heared sone facts that we cant stop our breathe to die this is also so the explanation of this fact .thanks......

Arjun Gohil 2 years, 10 months ago

We breathe through our lungs ?

Rishma Bhuyan 2 years, 11 months ago

Oxygen is essential for life. Normal aur contains 21% oxygen, which we breathe into our lungs so it can enter our bloodstream to help with the proper functioning of our tissues and organs. We also breathe as a way to expel carbon dioxide gas, which is a type of waste our bodies produce.

Raj Dhwaj Raj 2 years, 11 months ago

We breathe to the break down of glucose with the help of oxygen to form A. T. P(Adenosine tri phosphate) this is energy packed to gives us energy.

ANSWER

if a body covers 3 consicutive equal distances with speed v¹,v²,v³ then the average speed of the body will be

Posted by Princy Gupta 2 years, 11 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 2 years, 11 months ago

Car travels 3 equal distances with speeds v1, v2 , v3 . We need to know that average speed is defined as the ratio of total distance to the total time taken.

Cancelling "s" on numerator and denominator :

So final answer :

ANSWER

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