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

The constant in Newton's law of gravitation relating gravity to the masses and separation of particles is equals to the 6. 67 × 10 -7Newton metre square per kg square

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The substance whose specific heat is more than theyare cooledand hot for long time

Posted by Vipin Mayank 5 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

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Define center of mass of a rigid body

Posted by Sayan Choudhury 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 11 months ago

Center of mass is the point where whole mass of the system can be supposed to be concentrated and motion of the system can be defined in terms of the center of mass.

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Define-Young's Modules of elasticity,term compressibility, Poisson's ratio.

Posted by Aksh Uppal 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Rashi Tomar 5 years, 11 months ago

Y=3B(1-2 sigma) another Y=2G(1+ sigma)

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Yogita Ingle 5 years, 11 months ago

Young's Modulus of Elasticity

Young's Modulus of elasticity is the ratio of longitudinal stress to longitudinal strain.

It is denoted by Y.

Young's Modulus of elasticity is given by

y = longitudinal stress to longitudinal strain

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A object is moving from point A to point B what is the work done by gravitational force

Posted by Aditi Chaudhary 5 years, 11 months ago

CBSE > Class 11 > Physics

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What will be effect on maximum height of a projectile when its angle of projection is changed

Posted by Ashish Arya 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 11 months ago

maximum height = {tex} \frac{ u^{2} sin^{2} \alpha }{2g}{/tex}

for α=30,

maximum height = {tex} \frac{ u^{2} sin^{2}30}{2g} = \frac{ u^{2} }{8g}{/tex}

for α=60,

maximum height = {tex} \frac{ u^{2} sin^{2}60}{2g} = \frac{3 u^{2} }{8g}{/tex}

So maximum height will increase

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Define fluid pressure

Posted by Aditi Chaudhary 5 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Yash Varshney 5 years, 11 months ago

The thrust exerted by a fluid at rest per unit area of the surface in contact with it is called as fluid pressure

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Surbhi Suryawanshi 5 years, 11 months ago

Pressure

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Prabh Singh 5 years, 11 months ago

It is a measurement of force per unit area on the object in a fluid or on a surface of a closed container. This pressure is exerted by gravity , acceleration or by forces outside the closed container.

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Escape speed of a cat of mass m is v on the surface of earth. The escape speed of a dog of mass 2m would be - (a) v/2 (b) 2v (c) v (d) 4v

Posted by Asavari Kaur 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Asavari Kaur 5 years, 11 months ago

Can you solve it

3Thank You

Beast Boy 5 years, 11 months ago

By under root 2Gm/r The escape velocity of dog will be 2v

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which em wave give preference for the treatment of cancer

Posted by Priti Rana 5 years, 11 months ago

CBSE > Class 11 > Physics

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a brick has the dimensions as shown in the figure it has a mass of 2 kg find the pressure exerted when kept a with the face 23 into 10 sentimeter on the ground be with the face turns into 7.5 sentimeter on the ground

Posted by Lakhraj Kumar 5 years, 11 months ago

CBSE > Class 11 > Physics

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Elastic potential energy of spring

Posted by Dilbag Sidhu 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 11 months ago

Elastic Potential Energy is the potential energy stored in an elastic material when it is stretched or compressed. The amount of energy stored is proportional to the amount stretched or compressed, as in, the more the amount of stretch, greater is the energy stored.

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Stereoisomerism???

Posted by Nisha Yadav 5 years, 11 months ago

CBSE > Class 11 > Physics

3 answers

Yogita Ingle 5 years, 11 months ago

Stereoisomerism refers to “the isomerism that is caused by the non-similar arrangements of atoms or functional groups belonging to an atom in space”. These types of isomers have the same constitutions, but different geometric arrangements of atoms. Stereoisomers can be broadly classified into two types, namely enantiomers and diastereomers.

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Shivangi Yadav 5 years, 11 months ago

Different arrangement of atom in space.

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Uma Charan Gangwar 5 years, 11 months ago

Molecules which have same molecular and steuctural formula but have different arrangement of atom in 3-D space

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Corbol cycal

Posted by Nikhil Vishwakarma 5 years, 11 months ago

CBSE > Class 11 > Physics

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Tangential acceleration of a particle starting from rest and moving in a circle of radius one metre varies with time as in the graph time after which total acceleration of the particle makes an angle of 30 degree with radial acceleration is

Posted by Jayesh Raiyani 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Jayesh Raiyani 5 years, 11 months ago

2 raise to 2 by 3

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What is the difference between ordinary and geostationary satellite

Posted by Hardip Singh 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Shivangi Yadav 5 years, 11 months ago

Geostationary satellite is a satellite which looks stationary from the surface. Ordinary satellite looks revovling around the earth.

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Pls tell from where I will get sahodya sample papers for revision pls ?tell

Posted by Esha Kochhar 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Farhat Shaikh Shaikh 5 years, 11 months ago

I think if you want online then search in Google .....

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A rubber string 10m long is suspended from a rigid support at its one end . calculate the extension in the string due to its own weight . the density of rubber is 1500 kg/m and young's modulus for the rubber is 5000000 N/m

Posted by K.S. Singh 5 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

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Why rain drops fall with same velocity?

Posted by Chandni Poojara 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 5 years, 11 months ago

When the rain drops fall freely under gravity, their motion is opposed by the viscous drag of air. They attain terminal velocity when the viscous force due to air becomes equal to the weight of the drops. Terminal velocity, v ∝ r². As radii of rain drops are small, so they do not acquire very high velocity.

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Angle of repose

Posted by Kartik Dhir 5 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

Farhat Shaikh Shaikh 5 years, 11 months ago

angle of repose is define as the minimum angle of inclination of a plane with the horizontal such that a body placed on the plane just begin to slide down the incline it is denoted by Alpha.

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Angle of repise

Posted by Kartik Dhir 5 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

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Pleas give me physics all derivation class 11th

Posted by Rajeshwari Verma 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Rajeshwari Verma 5 years, 11 months ago

Webside pls

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Shivangi Yadav 5 years, 11 months ago

You can search from Google.

1Thank You

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The position of an object moving along x-axis is given by x=a+bt²,where a=8.5m,b=2.5m/s² and t is measured in seconds. What is it's velocity between t=2s and t=4s

Posted by Kaustuvika Gogoi 5 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

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I m from ssvm dhurwa school ...where are you from??

Posted by Prakriti Ojha 5 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Jivisha Srivastava 5 years, 11 months ago

DPS allahabad

0Thank You

Harsh Singh 5 years, 11 months ago

I am harsh

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Prakriti Ojha 5 years, 11 months ago

Oo nice to meet you

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Uttam Kumar Paul 5 years, 11 months ago

Kv hasimara

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Physics practical

Posted by Sweeta Singh 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Farhat Shaikh Shaikh 5 years, 11 months ago

Vernier calipers ,screw gauge and pendulum string...

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Himanshu Rajput 5 years, 11 months ago

Nothing

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Define force? Not its effects.

Posted by Anna . 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Himanshu Rajput 5 years, 11 months ago

An external push or pull which can change the shape or size of the body or also direction of the motion of body

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Farhat Shaikh Shaikh 5 years, 11 months ago

An external agent which can change the position of the body is called force. Aur the product of mass and acceleration is called force

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pressure inside a drop and soap bubble derivation

Posted by Sanjana Sna 5 years, 11 months ago

CBSE > Class 11 > Physics

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Given that gor two vectorsAandB,|A*B|=|A_B|fimd the acute angle betweenAandB

Posted by Shilpa Kumari Kumari 5 years, 11 months ago

CBSE > Class 11 > Physics

0 answers

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Why electron have negative charge.

Posted by Mr Sharma Physics 5 years, 11 months ago

CBSE > Class 11 > Physics

2 answers

Vivek Kumar 5 years, 11 months ago

Its not actually a negative charge its only assumed by the scientists to explain their theories

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Shivangi Agrawal 5 years, 11 months ago

Electron have negative charge bcz all electron Of an atom Create a negative charge to balance positive charge of the Protons In the atomic nucleus Electrons are extremely small Compared to all other Parts of an atom

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What is strain???

Posted by Ronit Ji 5 years, 11 months ago

CBSE > Class 11 > Physics