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

Cell walls dense protective layer outside the plant cell covering cell membrane and allows all the materials to travel through it. While cell membrane is a semi permeable membrane which allows selective materials to enter and leave the cell and it is very flexible and present in both plant and animal cell.

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Define alcohol ??

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

2 answers

Ankur Kumar 3 years, 2 months ago

Tum insta chalate ho??

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Ankur Kumar 3 years, 2 months ago

Okk ham dost hai

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Define pholem

Posted by Ankur Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Sumesh Sharma 3 years, 2 months ago

I am in 11 th and sanket in 9 th

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Ankur Kumar 3 years, 2 months ago

Kya Anshika ????

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Sanket Kumar 3 years, 2 months ago

Priya what is your age and where you from

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Sumesh Sharma 3 years, 2 months ago

Jindgi

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Sumesh Sharma 3 years, 2 months ago

Jindi jo hamari jand hoti hai use hi problem khete hai?

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What is science ??

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Sanket Kumar 3 years, 1 month ago

Lol sorry ? phir to problem ho skti hai

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Ankur Kumar 3 years, 1 month ago

Sab kha chale gaye ?

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Sanket Kumar 3 years, 1 month ago

Hi Anshika and Priya yr aapko pta hai diksha chli gyi chod ke ??? aur riyanshi ka pta nhi kb online aati hai ??

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Sumesh Sharma 3 years, 1 month ago

Plz sanket mere question par chat mat karo plz mera bhai dekh leta hai kabhi kabhi

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Give me the answer of questions with solution

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

5 answers

Sanket Kumar 3 years, 2 months ago

Answer type kr rahi hai

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Ankur Kumar 3 years, 2 months ago

Mai yhi hu sanket

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Ankur Kumar 3 years, 2 months ago

Ye Anshika kha gayi

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Sanket Kumar 3 years, 2 months ago

Priya gyi kya ? OMG

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Sanket Kumar 3 years, 2 months ago

Ok wait phele baat kr le phir answer dunga ok ?

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The respective densities of aluminium, copper, and water are 2560 kgm−3, 8920 kgm−3, and 1000 kgm−3. What is the relative density of copper with respect to that of aluminium?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Sanket Kumar 3 years, 2 months ago

Yes mja aagya especially dogi wala

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Sanket Kumar 3 years, 2 months ago

Aur sunao intresting kuch ?

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Sumesh Sharma 3 years, 2 months ago

Hnn kha liya

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Sanket Kumar 3 years, 2 months ago

Wah dosto aur khana vana kha liya ??

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A person applies a force of 20 N on the head of a thumb pin. The pressure exerted by the tip of the pin is 20 × 106 Nm−2. What is the contact area of the tip?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Priya Kumari 3 years, 2 months ago

2,120 ... it is the answer of? your questions??

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Ankur Kumar 3 years, 2 months ago

Areee sab chale gaye kya

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Sanket Kumar 3 years, 2 months ago

Anshika sorry yr ?

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Sanket Kumar 3 years, 2 months ago

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The respective densities ofcopper and water are 89200 kg m−3 and 1000 kg m−3.What is the relative density of copper?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

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cube weighing 24.5 N is placed on a floor. It exerts a pressure of 2450 Nm−2 on the floor. What is the volume of the cube?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Sanket Kumar 3 years, 2 months ago

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A cube of side four centimetres and a cuboid of dimensions 4 × 3 × 2 cm3 are placed on a table. The 4 × 3 cm2 face of the cuboid is touching the surface of the table. The pressure exerted by the cuboid is twice that exerted by the cube. What is the ratio of the mass of the cuboid to that of the cube?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

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An anti-aircraft gun is placed at an important position. It fires vertically bullets upward with a velocity of 500 m/s. What should be the minimum height of an airplane from the ground to avoid being hit by the gun fire?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

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An astronaut weighs 112 N on moon’s surface. The acceleration due to gravity on moon is one-sixth of that on earth. What is the mass of the astronaut on earth’s surface?

Posted by Sumesh Sharma 3 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Sia ? 3 years, 1 month ago

= 10 × 1.63 = 16.3 N

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The mass and diameter of Saturn and Jupiter are listed in the given table. Two identical probes are sent to both the planets to gather more information about their atmospheric compositions. Planet Mass (kg) Diameter (km) Saturn 5.68 × 1025 1.20 × 105 Jupiter 1.89 × 1027 1.43 × 105 What will be the approximate ratio of the weight of the probe on Saturn to that on Jupiter?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Ankur Kumar 3 years, 2 months ago

Itni jaldi ?

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Sanket Kumar 3 years, 2 months ago

Aa gya ??

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Ankur Kumar 3 years, 2 months ago

Aaj sanket online nhi hai

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An object, weighing 120 N on moon, is brought back onto the surface of earth. The acceleration due to gravity on moon is one-sixth of that on earth. What will be the change in the weight of the object?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

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A stone is dropped from a tower of height 80 metres. What is its distance from the ground after three seconds?

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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Vikki throws a ball upward with a velocity of 25 m/s. The ball will return to him after

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

0 answers

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The force of gravity is ----force that is--- proportional to the----- of the distance between the two given masses.

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

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the mass of the earth is 6 into 10 raise to the power 24 kg and that of the natural satellite is 6.5 into 10 power 20 kg if the distance between them is 3.35 into 10 ki power 6 km calculate the force exerted by the Earth on it if the gravitational is 6.7 into 10 raise to the power 11 Newton metre square kg

Posted by Sumesh Sharma 3 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Priya Kumari 3 years, 1 month ago

I don't know about it ??

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Who is director of WHO (World health organization ) ? ⚕️⚕️⚕️⚕️

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Sanket Kumar 3 years, 1 month ago

Yes

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Sumesh Sharma 3 years, 1 month ago

Are you online

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Sumesh Sharma 3 years, 1 month ago

Hlo

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Vibhuti Kumari 3 years, 1 month ago

Tedros Adhanom

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What is Golgi apparatus ⚕️ ?

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Sumesh Sharma 3 years, 2 months ago

If you don't mind plz tum mere question par chat mat karo, mera bhai kabhi kabhi dekh leta hai

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Ankur Kumar 3 years, 2 months ago

Nhi Anshika tumse bhi krunge

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Vibhuti Kumari 3 years, 2 months ago

The Golgi apparatus or the Golgi body or Golgi complex or simply Golgi is a cellular organelle present in most of the cells of the eukaryotic organisms.

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Can you name the two organelles we have studied that contain their own genetic material ? ??

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

4 answers

Abhishek Kumar 3 years, 2 months ago

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Ankur Kumar 3 years, 2 months ago

Aur mujhe friendship kerne mai koi problem nhi hai ??

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Ankur Kumar 3 years, 2 months ago

I am not lying believe me

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Ankur Kumar 3 years, 2 months ago

Sanket vo message bhai ne kiya tha maine nhi

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What are living organisms made up of ?

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science

3 answers

Sanket Kumar 3 years, 2 months ago

All students are topper on this app I know but koi kuch play bhi krta hai ki hamesha study like Anshika ?

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Sanket Kumar 3 years, 2 months ago

No reply from Anshika ,riyanshi , bibhuti and Priya and many friends anyone online ? ????

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Sanket Kumar 3 years, 2 months ago

(Priya don't say lie friendship krni hai to bolo) agar tumhe iss message ka bura laga to sorry but friendship krne mein hme kya problem ok sorry just chill ?????

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Fundamental unit of life ?

Posted by Sanket Kumar 3 years, 2 months ago

CBSE > Class 09 > Science