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

The definition of Matter is anything that has mass and volume (takes up space). For most common objects that we deal with every day, it is fairly simple to demonstrate that they have mass and take up space.

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Rishi Pal 4 years, 3 months ago

Matter is a anything that occupies space and have mass.

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What is sexual reproduction ?

Posted by Sanket ... 4 years, 3 months ago

CBSE > Class 09 > Science

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What is retardation? Write one example of retardation. How is it related to acceleration? Show the uniform retardation graphically

Posted by Piyush Rajput 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Tanvi Gupta 4 years, 2 months ago

Retardation is also de acceleration Like an object is moving with ths retardation of - 6m/s^2

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What is relation between wavelength and amplitude

Posted by Priyal Goyal 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 4 years, 3 months ago

You play free fire

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8. Define ‘Brownian Motion’. Name the Scientist who first observed it.

Posted by Archana Kumari 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 4 years, 3 months ago

You play free fire

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Difference between homogeneous and heterogeneous mixture.

Posted by Vanshika 2008 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Harshit Dhote 4 years, 3 months ago

Homogenous mixtures generally have a uniform composition throughout the mixture whereas Heterogeneous mixtures have composition which may vary from point to point. In Homogenous mixtures, the whole mixture is in the same phase whereas in Heterogeneous mixture, substances can be of two phases and layers may separate.

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Sanket ... 4 years, 3 months ago

You play free fire

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Napthalene balls disappear with time without leaving any solid. Give reason

Posted by Piyush Bairwa 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Jashandeep Kaur 4 years, 3 months ago

By absorbing heat energy from the surroundings, napthalene balls was slowly sublime that is solid naphthalene balls directly get converted into vapours and disappear with time without leaving any solid.

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Describe the structure of cell membrane

Posted by Aarjav Patni 4 years, 3 months ago

CBSE > Class 09 > Science

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The term 'protoplasm' was coined by ?

Posted by Ayush Thapliyal 4 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Deepti Kumari 4 years, 3 months ago

Purkinje

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Sanket ... 4 years, 3 months ago

You play free fire

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Kashish Srivastav 4 years, 3 months ago

Purkinje

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Name the two cell organelles that contain there own genetic material

Posted by Akansha Sehgal 4 years, 3 months ago

CBSE > Class 09 > Science

4 answers

Bhavya Shah 4 years, 2 months ago

Plastids and mitochondria are the two organelles which have their own ribosomes and DNA material

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Sanket ... 4 years, 3 months ago

You play free fire

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Sunny Goyat 4 years, 3 months ago

Mitochondria also known as Power house of the cell

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Karina Karina 4 years, 3 months ago

Mitochondria and plastids

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Explain what happens to the molecular motion and energy of 1 kg of water at 273 k when it is changed into ice at same temperature. How is the latent heat of fusion related to the energy exchange the takes place during this change of state?

Posted by Krishna Agarwal 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 4 years, 2 months ago

You play free fire

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Formula of time = distance/speed?????

Posted by Ishika Singh 4 years, 3 months ago

CBSE > Class 09 > Science

5 answers

Sanket ... 4 years, 3 months ago

Ishika what's app number do agar FF khelti ho to

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Sanket ... 4 years, 3 months ago

Ishika you play free fire

2Thank You

Sanket ... 4 years, 3 months ago

Yes ishika

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Anish Kumar 4 years, 3 months ago

Yes

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Bansari Joshi 4 years, 3 months ago

The formula for time is [Time = Distance ÷ Speed]

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Why do we need food??

Posted by Himani Mehta 4 years, 3 months ago

CBSE > Class 09 > Science

4 answers

Hema Sri 4 years, 2 months ago

We need to eat food because we need to get energy to do any exercise or any activity. I think this helps u

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Sanket ... 4 years, 3 months ago

You play free fire

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Sankar Kadam 4 years, 3 months ago

To be healthy and be energetic

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Keshav Mishra 4 years, 3 months ago

for energy and growth

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Another meaning of reproduction is

Posted by Keerthi Prasad 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Sanket ... 4 years, 3 months ago

You play free fire

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Sanket ... 4 years, 3 months ago

Reproduce ??

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What is o⁴ . It will exit

Posted by Keerthi Prasad 4 years, 3 months ago

CBSE > Class 09 > Science

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During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 x 10⁸ m s ?

Posted by Ishika Singh 4 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Sanket ... 4 years, 3 months ago

Hello ishika

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Sanket ... 4 years, 3 months ago

You play free fire

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Keshav Mishra 4 years, 3 months ago

s=vt, v=3*10 power 8 , t = 5 mins =5*60=300s, distance =3*300*10 power8 = 9*10 power 10 m or just put 10 zero after 9

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A compound is regarded as a pure substance while mixture is not . Give reason

Posted by Zeenat Dhanshe 4 years, 3 months ago

CBSE > Class 09 > Science

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A body thrown vertically upwards reaches a maximum height it then returns to ground calculate the total distance travelled and the displacement

Posted by Nidhi Ghodki 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Sanket ... 4 years, 3 months ago

You play free fire

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What is GM crop

Posted by Mido Ratan 4 years, 3 months ago

CBSE > Class 09 > Science

3 answers

Mido Ratan 4 years, 1 month ago

Yes

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Sanket ... 4 years, 3 months ago

You play free fire

1Thank You

Ishika Singh 4 years, 3 months ago

Crops which are been developed by introducing a new gene from any other source, e.g., bacteria or any other organism to obtain the desired character is called Genetically Modified (GM) crop.

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To demonstrate the diffusion of Liquids or gases

Posted by Ayushi Sahu 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Sanket ... 4 years, 3 months ago

You play free fire

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Vinod Singh 4 years, 3 months ago

Home work

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What is reproduction in human

Posted by Ayush Sharma 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Ishika Singh 4 years, 3 months ago

Reproduction means to reproduce. It is a biological process by which an organism reproduces an offspring who is biologically similar to the organism. Reproduction enables and ensures the continuity of species, generation after generation. It is the main feature of life on earth.

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Kamar Tyagi 4 years, 3 months ago

कपड़े धूप में क्यों टूटते हैं

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Explain properties of particles of matter along with how these vary in various states

Posted by Naman Tripathi 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Bansari Joshi 4 years, 3 months ago

Matter can exist in one of three main states: solid, liquid, or gas. Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. ... Gaseous matteris composed of particles packed so loosely that it has neither a definedshape nor a defined volume

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Ncert book ka motion book Mai ex. Ka 10 wala question samj nhi AA RHA hai v Kyu nikalni h

Posted by Dazy Yadav 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Virat Kholi 4 years, 3 months ago

Distance(42250 km) ko time (24) hours se divide kar do

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Virat Kholi 4 years, 3 months ago

Speed nikalni hai

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Prove that s=ut+½at²

Posted by Debiprasad Moharana 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Dazy Yadav 4 years, 3 months ago

Graphical method se

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Om Parkash Singh Om Parkash Singh 4 years, 3 months ago

Fgu

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Give two reasons to justify-

Posted by Anuj Kumar Mahto 4 years, 3 months ago

CBSE > Class 09 > Science

2 answers

Sanket ... 4 years, 3 months ago

Please complete your question ?

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Bansari Joshi 4 years, 3 months ago

Can you please write whole question ?

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How had India leapt her relationship with the world in ancient time

Posted by Anant Sharma 4 years, 3 months ago

CBSE > Class 09 > Science

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WHAT IS RADIOACTIVE RADIATION

Posted by Om Dwived 4 years, 3 months ago

CBSE > Class 09 > Science

5 answers

Sanket ... 4 years, 3 months ago

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.

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Parth Magar 4 years, 3 months ago

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Bandar Gowtham Gowtham 4 years, 3 months ago

Ggh

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Pal D. Pathak 4 years, 3 months ago

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Manan Gulati 4 years, 3 months ago

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Calculate the temperature at which the Celsius and Fahrenheit scale have the same reading