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

Inertia is the property ot the material which oppose any change on its state. It is the property of an object which mentain its state. Inertia is directly proportional to the mass. First law of motion is also known as law of inertia.

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Farhab Ansari 3 years ago

what is inertia

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What is base.

Posted by Anantha Kumar 3 years ago

CBSE > Class 09 > Science

1 answers

Farhab Ansari 3 years ago

what is inertia

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ANSWER

Give notes for acid base lesson for 9th

Posted by Anantha Kumar 3 years ago

CBSE > Class 09 > Science

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how many grams of solute is required to prepare 15%concentrated solution . with the volume of 200ml ?

Posted by Sukhmanpreet Kaur 3 years ago

CBSE > Class 09 > Science

0 answers

ANSWER

Sir plzz give me important notes plzz help me my exam is close sir 6 and 8 chapter give me notes plzz sir

Posted by Himanshu Gaming Gaming 3 years ago

CBSE > Class 09 > Science

1 answers

Maheboob Patel Maheboob Patel 3 years ago

Yes sir

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Hlo sir

Posted by Himanshu Gaming Gaming 3 years ago

CBSE > Class 09 > Science

0 answers

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What is sexual reproduction & What is asexual reproduction?

Posted by Lucky Kumar 3 years ago

CBSE > Class 09 > Science

1 answers

Bitu Kumar 3 years ago

When a new baby is born with the help of single parent is called asexual reproduction

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Cells of cork contain a chemical called

Posted by Ashish Rajput 3 years ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 3 years ago

Suberin

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Vijender Malik 3 years ago

Suberin

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Lakshay Meena 3 years ago

suberin

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Lakshay Meena 3 years ago

Cells of cork contain a chemical called suberin

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Rozyta Tensubam 3 years ago

Suberin

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What is lysosomes??

Posted by Nirmal Kumar 3 years ago

CBSE > Class 09 > Science

3 answers

Bitu Kumar 3 years ago

1. Lysosome are the membrane bounded structure which contain powerful digestive enzymes that are made by RER. 2. Lysosome are the waste disposal system of the cell. 3. The function of lysosome is to clean the cell by digesting foreign material, worn-out cell organelles etc. When the cell gets damaged lysosome burst itself and digest its own cell. So, the lysosome are known suicide bag of the cell.

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Rohit Kumar 3 years ago

an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.

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Rozyta Tensubam 3 years ago

Lysosomes are membrane-bound sacs filled with digestive enzymes which are made by RER. They are absent in RBC and have a kind of waste disposal system. When the cell gets damaged, lysosomes burst and the enzymes digest their own cell. Since lysosomes can digest their own cell, they are known as the suicidal bags in a cell.

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Solution contains 30g of glucose and 20g of salt in 500ml of water

Posted by Yokesh Waran 3 years ago

CBSE > Class 09 > Science

1 answers

Abhishek Kumar 3 years ago

550ml

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ANSWER

A car starting from rest moves uniform acceleration of 0.2ms-2 for 4minutes. Find the speed and distance travelled .

Posted by Ganesh Bhai 3 years ago

CBSE > Class 09 > Science

1 answers

Rozyta Tensubam 3 years ago

Given : u = 0 ; a = 0.2 ms-² ; t = 4 mins = 4×60 = 240 secs Then ; v = u + at => v = 0 + (0.2×240) => v = 0 + 48 => v = 48 ms-¹ Again ; S = ut + ½ a t² => S = (0×240) (½×0.2×240×240) => S = 0 + 5760 => S = 5760 m

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Which of the following are not matter and why? Air, thought, light ,chair

Posted by Namrata Babani 3 years ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 3 years ago

Thought because it has not mass and occupy space

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Manas Malhotra 3 years ago

Thought

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Kanishka Chauhan 07 3 years ago

Thought

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Kabeer Gurung 3 years ago

Yes thought and light are not a matter.

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Sarthak Singh 3 years ago

Thought and light is not an matter because it does not occupy space and have volume.

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What is H2s

Posted by Nayandeep Chakraborty 3 years ago

CBSE > Class 09 > Science

3 answers

Vineet Yadav 2 years, 11 months ago

Hydrogen sulfhide

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Rozyta Tensubam 3 years ago

Hydrogen Sulphide

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Lucky Sharma 3 years ago

Jo tum piche se chorta hai

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What is the major source of fresh water in city/ town/ village where you live ?

Posted by Jonali Barman 3 years ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 3 years ago

Underground water

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Sarthak Singh 3 years ago

River .

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A bus decreases its speed from 80 km h -1 to 60 km h -1 in 5 s . Find the acceleration

Posted by Nupur Dasgupta 3 years ago

CBSE > Class 09 > Science

5 answers

Rozyta Tensubam 3 years ago

Given : u = 80 kmh-¹ ; v = 60 kmh-¹ ; t = 5 s Then ; a = v-u / t => a = 60 - 80 / 5 => a = -20 / 5 => a = -4 ms-²

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Sarthak Singh 3 years ago

80km=200/9m 60km=50/3m a=50/3-200/3/5=-1.1ms

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Sarthak Singh 3 years ago

a=v-u/t a=80-60/5=4m/s

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Lakshya Garg 3 years ago

A = v-u / t = 80-60 / 5 = 20/5 =4m/s²

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Satyansh Rajbhar 3 years ago

Acceleration = 4.4 m/s²

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ANSWER

Explain free fall

Posted by Sarika Kumari 3 years ago

CBSE > Class 09 > Science

1 answers

Manas Malhotra 3 years ago

When a body move exclusively under the influence of earth gravity it is said to be in free fall

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Silver nitrate solution is used to study

Posted by Priyanshu Singh 3 years ago

CBSE > Class 09 > Science

4 answers

Khanak Prakash 3 years ago

Golgi body

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Rozyta Tensubam 3 years ago

Golgi Apparatus

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Yash Phougat Yash Phougat 3 years ago

What is force

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Priyanshu Singh 3 years ago

Golgi apparatus

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CO 2 is a gas . Write two gaseous property to justify it.

Posted by Ananya Ghawri 3 years ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 3 years ago

1. The particles are widely packed/arranged. 2. The particles have high fluidity.

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Srishti Gupta 3 years ago

1 It doesn't have fixed shape and volume . 2 It can be compressed

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Calculate the average density of the earth in terms of 'g' , 'G' and 'R'

Posted by Sneha Sr 3 years ago

CBSE > Class 09 > Science

1 answers

Prince Kohar 3 years ago

The same thing you are not in my phone utha ke kithna chapter ke liye bhi na hai to do the me to H to the me to be in yuthe me of

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State the function of meristematic tissue

Posted by Sarika Rawal 3 years ago

CBSE > Class 09 > Science

4 answers

Shreya Pandey 3 years ago

Meristematic tissue have ability to divide their cells. These are 3 types of cells.. apical, lateral and intercalary meristem

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Rozyta Tensubam 3 years ago

Matter can be defined as anything that has mass, volume, can occupy space and can be felt with our senses.

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Suganya R 3 years ago

Helps in growth of the plant 3 Types of meristematic tissues are Apical tissues - tip of stem and root helps in growth Intercalary tissues - present in node of branches helps in growth of branches and leaves Lateral tissues - helps in increasing the grith of the plant

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Bindu Devi 3 years ago

What is a matter

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During a experiment the student were asked to prepare a10%(mass/mass) solution of sugar in water ramesh dissolved 10g of sugar in 100 g of water while sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution (A) are the two solution of the same concentration (B) compare the mass% of two solution

Posted by Gayatri Verma 3 years ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 3 years ago

(A) No, the two solutions are not of same concentration. (B) The mass percentage of the solution prepared by Ramesh is 10/100×100 = 10%.

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Srishti Gupta 3 years ago

100

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Imagine if mitochondria does not have there own DNA. What process could not or could be taken place?

Posted by Sanvi Shetty 3 years ago

CBSE > Class 09 > Science

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A force of 15 Newton acts for 5 seconds on a body of mass 5 kg which is initially at rest calculate the displacement of the body

Posted by Riya Prajapati 3 years ago

CBSE > Class 09 > Science

2 answers

Ujjawalsingh Singh 3 years ago

15/5×5=15m/s

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Shorya Agrawal 3 years ago

15m/s

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Using a horizontal force of 200N, we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the abinet

Posted by Charan Teja 3 years ago

CBSE > Class 09 > Science

3 answers

Vijender Malik 3 years ago

-200 N

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Rozyta Tensubam 3 years ago

-200N

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Sarthak Singh 3 years ago

-200n

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Justify water is a liquid and wood is a solid class 9th

Posted by Saksham Mishra 3 years ago

CBSE > Class 09 > Science

4 answers

Rozyta Tensubam 3 years ago

Liquids have no definite shape but definite volume. The particles of liquid are loosely packed so they are soft. Since water has the properties of liquid, it is a liquid. Solids have definite shape and definite volume. The particles are tightly packed so they are hard. Since wood has the properties of solid, it is a solid.

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Siddhi Vishwakarma 3 years ago

Water can flow but would cannot flow it is solid cannot flow and it as high density

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Ramani Velmurugan 3 years ago

Liquid can flow, water can flow because of that water is an liquid Solid cannot flow and it as high density, wood cannot flow and it as high density

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Kalashree G L 3 years ago

Water can flow but wood cannot flow

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Is Chloroplast stores fats, proteins and starch????

Posted by Xyz Abc A 3 years ago

CBSE > Class 09 > Science

3 answers

Rozyta Tensubam 3 years ago

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Aditi Yagnik 3 years ago

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Xyz Abc A 3 years ago

I think yes Is it right??

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What is difference between compound and mixture

Posted by Mudabbir Husain 3 years ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 3 years ago

Mixture is formed when two or more substances is mixed together in any proportion. The constituent particles show their properties. The constituent particles can be separated by physical methods like handpicking. Compound is formed when two or more atoms of elements are combined chemically to form a new substance in a fixed proportion. The properties of the constituent particles are different from the properties of compounds. The constituent particles cannot be separated by physical methods but can be separated by chemical methods like electrolysis.

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Siddhant Agnihotri 3 years ago

Mixture is formed when two or more substances are mixed in any proportion without any chemical change while Compound is formed when two or more substances are mixed in two proportion with an chemical change.

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ANSWER

Different between prokaryotic or eukaryotic

Posted by Afzal Ali 3 years ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 3 years ago

Prokaryotic cells - 1. The size is generally small. 2. The nuclear region is not well defined and it lacks a nuclear membrane. 3. They contain only one chromosome. 4. Membrane-bound organelles are absent. 5. Example : Bacillus Anthracis Eukaryotic cells - 1. The nuclear region is generally large. 2. The nuclear region is well defined and it is surrounded by a nuclear membrane. 3. They contain more than one chromosome. 4. Membrane-bound organelles are present. 5. Example : Amoeba

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Zia Deen 3 years ago

Prokaryotic cells- Very minute in size, nuclear region is not surrounded by nuclear membrane (nuclear Membrane is absent). Single chromosome present. Eg: Bacteria Eukaryotic cells- Large in size, nuclear region surround by nuclear membrane. More than one chromosomes are present. Eg: Ameoba,humans,animals,plants,etc..

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