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 2 years, 2 months ago

what is inertia

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What is base.

Posted by Anantha Kumar 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Farhab Ansari 2 years, 2 months ago

what is inertia

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Give notes for acid base lesson for 9th

Posted by Anantha Kumar 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

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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 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Maheboob Patel Maheboob Patel 2 years, 2 months ago

Yes sir

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Hlo sir

Posted by Himanshu Gaming Gaming 2 years, 2 months ago

CBSE > Class 09 > Science

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What is sexual reproduction & What is asexual reproduction?

Posted by Lucky Kumar 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Bitu Kumar 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 2 years, 2 months ago

Suberin

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Vijender Malik 2 years, 2 months ago

Suberin

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Lakshay Meena 2 years, 2 months ago

suberin

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Lakshay Meena 2 years, 2 months ago

Cells of cork contain a chemical called suberin

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Rozyta Tensubam 2 years, 2 months ago

Suberin

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What is lysosomes??

Posted by Nirmal Kumar 2 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Bitu Kumar 2 years, 2 months 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 2 years, 2 months ago

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

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Rozyta Tensubam 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Abhishek Kumar 2 years, 2 months ago

550ml

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

Posted by Ganesh Bhai 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Rozyta Tensubam 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Shreya Pandey 2 years, 2 months ago

Thought because it has not mass and occupy space

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Manas Malhotra 2 years, 2 months ago

Thought

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Kanishka Chauhan 07 2 years, 2 months ago

Thought

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Kabeer Gurung 2 years, 2 months ago

Yes thought and light are not a matter.

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Sarthak Singh 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Vineet Yadav 2 years, 1 month ago

Hydrogen sulfhide

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Rozyta Tensubam 2 years, 2 months ago

Hydrogen Sulphide

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Lucky Sharma 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 years, 2 months ago

Underground water

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Sarthak Singh 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Rozyta Tensubam 2 years, 2 months 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 2 years, 2 months ago

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

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Sarthak Singh 2 years, 2 months ago

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

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Lakshya Garg 2 years, 2 months ago

A = v-u / t = 80-60 / 5 = 20/5 =4m/s²

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Satyansh Rajbhar 2 years, 2 months ago

Acceleration = 4.4 m/s²

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ANSWER

Explain free fall

Posted by Sarika Kumari 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Manas Malhotra 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Khanak Prakash 2 years, 2 months ago

Golgi body

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Rozyta Tensubam 2 years, 2 months ago

Golgi Apparatus

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Yash Phougat Yash Phougat 2 years, 2 months ago

What is force

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Priyanshu Singh 2 years, 2 months ago

Golgi apparatus

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

Posted by Ananya Ghawri 2 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 years, 2 months ago

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

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Srishti Gupta 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Prince Kohar 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Shreya Pandey 2 years, 2 months 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 2 years, 2 months 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 2 years, 2 months 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 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Rozyta Tensubam 2 years, 2 months 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 2 years, 2 months 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 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Ujjawalsingh Singh 2 years, 2 months ago

15/5×5=15m/s

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Shorya Agrawal 2 years, 2 months 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 2 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Vijender Malik 2 years, 2 months ago

-200 N

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Rozyta Tensubam 2 years, 2 months ago

-200N

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Sarthak Singh 2 years, 2 months ago

-200n

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

Posted by Saksham Mishra 2 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Rozyta Tensubam 2 years, 2 months 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 2 years, 2 months ago

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

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Ramani Velmurugan 2 years, 2 months 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 2 years, 2 months ago

Water can flow but wood cannot flow

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