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

A monoatomic ideal gas has heat capacity C v = 1.5 which comes from the three translational degrees of freedom. For solids at high temperature, C v = 3 , implying six degrees of freedom...!

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Prove gravitational force is a conservative force

Posted by Aditi Shourya 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Arpit Gupta 7 years, 1 month ago

Because it is not dependent on its path. It just depend on initial and final position

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Relation between kinetic and linear momentum

Posted by Mhonchan Lapon 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 1 month ago

Let m is the mass of a body
v is the velocity of body
Therefore of momentum of body p = mv
K.E. = 1/2 mv2
= 1/2m (m²v²)
= 1/2m (p)²
= p²/2m

This is an important relation. It shows the body cannot have K.E. without having linear momentum and vice verse.

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What is absorptive or emissive power?

Posted by Lakshika Sharma 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 1 month ago

Emissive power : Energy radiated by the body per unit time is defined as the Emissive power of the body.
Absoptive power: The ratio of the amount of heat energy absorbed by the surface in a certain time to the amount of heat energy falling normally on the suface in the same time.

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Anyone can send blue print of cbse physics +1

Posted by Vartik Thakur 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Priya Dharshini ? 7 years, 1 month ago

It depends upon ur school only. In my school it is divided equally for all chapters

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Poission ratio

Posted by Meenu Kumar 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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How and why friction force is independent on area of contact

Posted by Arpit Gupta 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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Please sir provide me a model paoer of class 11th for hindi medium with solution

Posted by Manish Kumar Singh 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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If e m j and g respective denote energy mass angular momentum and gravitational constant calculate dimensions of ej2/m5g2

Posted by Logang Pauler 7 years, 1 month ago

CBSE > Class 11 > Physics

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Derive the relation between g & G

Posted by Ananta Kundu 7 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Punit Bihare 7 years, 1 month ago

F=GMm/R^2 F=mg Therefore comparing 1 and 2 eq. , GMm/R^2=mg Therefore g=GM/R^2

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Gaurav Seth 7 years, 1 month ago

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10^-11 N.m^2.kg^-2. G is a constant throughout space and time.
g = 9.8 m.s^-2. g is a variable quantity.
G is a scalar quantity whereas g is a vector qualtity.

(According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r², where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.
So mg = GMm/r²,
or g = GM/r²
g is a constant at a given location, which depends upon M and r.)

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Prakhar J 7 years, 1 month ago

g=( GM)/R^2

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Define conduction convection and radiation

Posted by Sannu H 7 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Prakhar J 7 years, 1 month ago

Radiation is the emission and propagation of energy in the form of rays or waves. The energy radiated or transmitted in the form of rays, waves, or particles. .......?

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Prakhar J 7 years, 1 month ago

Convection is the process in which heat moves through a gas or a liquid as the hotter part rises and the cooler, heavier part sinks........?

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Prakhar J 7 years, 1 month ago

Conduction is the process by which heat or electricity passes through a material......?

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if you close one end of an open pipe, what happens to wavelength of fundamental not?

Posted by Vinay Kumar 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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What is heat pump.give an example

Posted by Rohit Chaurasia 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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Please proove the equation of second law of motion by calculus method...???

Posted by Manish Bhati 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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The mass and diameter of a planet are four times that of the earth. What is the acceleration due to gravity on the surface of the planet(g=9.8ms)

Posted by Deepak Akkasali 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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velocity at any time in angular projectile motion

Posted by Siya Bansal 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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What is si unit of gravitation constant

Posted by Bhashkar Reddy 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Veena Singh☺️? 7 years, 1 month ago

Nm²/kg²

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Conservative force and non conservation force problems with solutions

Posted by Pavan Kalyan 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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A ball moving with a momentum of 5kg/ms strikes against a wall at an angle of 45 degree and is reflected at the same angle .calculate the change in momentum.

Posted by Appy Garnara 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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Define escape velocity.derive an expression for the escape velocity of the body from the source of the earth.

Posted by Appy Garnara 7 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Veena Singh☺️? 7 years, 1 month ago

It is the minimum velocity with which an object must be projected from the surface of earth in order that it may escape the gravitational field if earth

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Sahil Sharma 7 years, 1 month ago

He apeksha see the pardeep book or any other help book for the qou. You asked

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What would be the velocity of the top end at the time of touching the ground if a rod of length l and mass M held vertically is let go down,without slipping at the point of contact.

Posted by Appy Garnara 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

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show that in elastic collision bodies of same mass exchange their velocity after collision

Posted by Vinay Kumar 7 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Veena Singh☺️? 7 years, 1 month ago

If m1=m2=m v1=(m-m)u1/2m+2mu2/2m v1=u2 Similarly, v2= u1

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Sahil Sharma 7 years, 1 month ago

He vinay it is a spl. Case in the topic of elastic colision plz see the pardeep book It is well defined in the book

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A string of mass 2.5kg is under the tension of 200N the lenght of the stretched string is 20 mtrs .if a jerk is given to it .how long does it take reach the other end

Posted by Jeevan R 7 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is first law of thermodynamics

Posted by Shiv Narayan Sahu 7 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 7 years, 1 month ago

The First law of thermodynamics is same as law of conservation of energy.
According to law of energy conservation: - Energy can neither be created nor be destroyed, only transformed to other forms.
According to first law of thermodynamics:- The change in the internal energy of a closed system is equal to the amount of heat supplied to the system, minus the amount of work done by the system on its surroundings.
Examples:- Consider a ball falling from the roof of the building when at top of the building the ball has only potential energy and when it starts falling potential energy decreases and kinetic energy starts increasing. At the ground it has only kinetic energy.

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