CBSE > Class 11 > Physics | CBSE Board | Homework Help

The Cavendish experiment, performed in 1797–1798 by British scientist Henry Cavendish, was the first experiment to measure the force of gravity between masses in the laboratory and the first to yield accurate values for the gravitational constant.

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Why the atmosphere of the earth is due to the gravitational force of the earth

Posted by Yash Barnwal 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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Posted by Aayushi Kukreja 5 years, 11 months ago

CBSE > Class 11 > Physics

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derive an expression for kinetic energy of a rigid body on its own axis during its rotational motion

Posted by Richa Mishra 7 years, 4 months ago

CBSE > Class 11 > Physics

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Myopia

Posted by Akanksha Yadav 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Vijay Tripathi 7 years, 4 months ago

It is the defect in which person is not able to see near object clearly also known as naer sightdeness which is cured by using concave lense.

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The acceleration due to gravity on the surface of the earth is 10 m/ s^2 . The mass of the planet mars as compared to earth is 1/10 and radius is 1/2. Determine the gravitational acceleration of the body on the surface of mars.

Posted by Maliaka Thakur 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Abhishek Goyal 7 years, 4 months ago

4m/s sq.

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A 2 metre wide truck is moving with uniform speed v= 8 m/s along a straight horizontal road. A pedestrian starts to cross the road with uniform speed u when the truck is 4metre away from him. The minimum value of u so that he can cross the road safely is....?

Posted by Vicky Kumar 7 years, 4 months ago

CBSE > Class 11 > Physics

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A plate in the form of a semicircle of radius a has a mass per unit área of kr where k is a Constant and r is the distance from the centre of the straight edge . By dividing the plate into semicircular rings, find the distance of the centre of mass of the plate from the centre of its straight edge .

Posted by Priyanshu Jhariya 7 years, 4 months ago

CBSE > Class 11 > Physics

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Can i get the applications of bernaulli's theorem

Posted by Nikhlesh Bhardwaj 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Ʌɐpɐʎ Ɐuɐɥsɹɐp . 7 years, 4 months ago

it is use in the calculation of pressure or velocity of the fluid

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Which book is good for 11

Posted by Radha Raman 7 years, 4 months ago

CBSE > Class 11 > Physics

7 answers

Karn Grewal 7 years, 4 months ago

Check yourself that which book better suits u from the above....I mean from which ur concepts will be fully clear..buy that. Everyone has different taste..!

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Vicky Kumar 7 years, 4 months ago

The worst book ever SL ARORA

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Vijay Tripathi 7 years, 4 months ago

S.L Arora is best book it is totally based on N.C.E.R.T with many question.

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Vicky Kumar 7 years, 4 months ago

Dc panday

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Faizan Khan?? 7 years, 4 months ago

Pradeep

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Ritu Thapliyal 7 years, 4 months ago

SL Arora is also good

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Abhinav Sharma 7 years, 4 months ago

HC Verma

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Happy Govardhan to all my dear........दोस्तों??

Posted by Sarthak Sharma 7 years, 4 months ago

CBSE > Class 11 > Physics

7 answers

Sahil Srivastava 7 years, 4 months ago

and sorry

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Sahil Srivastava 7 years, 4 months ago

ohk thnk u

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Sarthak Sharma 7 years, 4 months ago

Mr. Sahil. Its today becoz tomorrow will me. Bhaiya dooz

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Sarthak Sharma 7 years, 4 months ago

Nia its hindu religions Festival

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Sahil Srivastava 7 years, 4 months ago

and bro sarthak kl h govardhan puja

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Sahil Srivastava 7 years, 4 months ago

hinduon ki puja hoti h

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Nia Afreen 7 years, 4 months ago

What is govardhan?

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Pulling a lawn roller is easier than to push it. Why?

Posted by Sumit Kumar 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Pragati Gola 7 years, 4 months ago

Pull is easier than push because object face more resistance in case of push than pull.

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Anmol Yadav 7 years, 4 months ago

Bcoz we apply less force in pulling compared to pushing

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A top can be constructed by joining a cone of radius R and high R and a hemisphere of radius R of uniform density. Distance from the centre of mass

Posted by Sanjana Singh 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Vicky Kumar 7 years, 4 months ago

√3R..

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Sarthak Sharma 7 years, 4 months ago

What is the question in this

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Sanjana Singh 7 years, 4 months ago

R/6

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You have not added new unit for class 11 (ray optic)

Posted by Harnoor Kaur 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Harnoor Kaur 7 years, 4 months ago

But it must be there in class 11

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Anurag Mishra 7 years, 4 months ago

Download it from class 12

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Difference between gravitational potential and gravitational potential energy?

Posted by Swati Gujar 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Vicky Kumar 7 years, 4 months ago

The gravitational potential (V) is the potential energy (U) per unit mass: where m is the mass of the object. Potential energy is equal (in magnitude, but negative) to the work done by the gravitational field moving a body to its given position in space from infinity. Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.

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A metal plate of area 5cm² is placed on a 0.5mm thick castor oil layer.If a force of 22,500dyne is needed to move the plate with the velocity of 3cm/s,calculate the coefficient of viscosity of caster oil.

Posted by Vijay Tripathi 7 years, 4 months ago

CBSE > Class 11 > Physics

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Anyone here from Banaras

Posted by Nawlesh Nand 7 years, 4 months ago

CBSE > Class 11 > Physics

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A steeel wire 70 cm long has a mass of 7kg if the wire is under a tension of 100n what is the speed of transverse waves in the wire

Posted by Anshu Kushwaha 7 years, 4 months ago

CBSE > Class 11 > Physics

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What happens when we leave 2 objects/bodies with equal masses in space?

Posted by Priyanka Nayak 7 years, 4 months ago

CBSE > Class 11 > Physics

3 answers

Priyanka Nayak 7 years, 4 months ago

They starts to move one around another in space because they are of equal masses If one body is have more mass and another have less mass then the lesser mass having body will move towards more mass having body,therefor. " the heavier object will always attract lighter object in space"

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Vijay Tripathi 7 years, 4 months ago

Nothing will happen they will experience equal weight i..e.. zero weight called weightlessness.

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Aman Kumar 7 years, 4 months ago

They will be weightless....

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Is there any difference in the heat and work

Posted by Biswanath Pradhan 7 years, 4 months ago

CBSE > Class 11 > Physics