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

~; If the deformarion is small, the stress in a body is proportional to the corresponding strain is kmnown as Hooke's Law. ~; Within elastic limit : stress directly proportional to steain. ~; stress/ strain = constant. ~; The modulus of the elasticuty depends in the type of material temperature and impurity. It does not depend upon the values of stress and strain.

1Thank You

Hemanth Reddy 6 years, 1 month ago

Within the elastic limit strees is directly proportional to strain

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Newton's law

Posted by Raj Sinha 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Hemanth Reddy 6 years, 1 month ago

There are three types of law

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Escape speed

Posted by Anurag Jha 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Bhuvi Kumar 6 years ago

Minimum velocity to escape the gravitational force of Earth

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Kiara D'Cruz 6 years, 1 month ago

It's the min. Velocity required to escape from the gravitational field of earth Ve for earth is 11.2km/s (ignoring the air resistance)

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Three mass points each of mass 'm' are placed at the vertices of an equilateral triangle of side L. Find gravitational potential and strength of gravitational field at the centroid of triangle.

Posted by Archit Dauneriya 6 years, 1 month ago

CBSE > Class 11 > Physics

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ANSWER

At what depth from the surface of earth the value of acceleration due to gravity reduced by 40% of its value on the surface of earth?

Posted by Shikha Yadav 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Tricks for physics numericals

Posted by Darshan Sakthivel 6 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Dheeraj Thakur 6 years, 1 month ago

First you have note given items in this question otherwise no tricks

1Thank You

Aditya Narayan Singh 6 years, 1 month ago

Concept should be clear

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Kuldeep Rana Rajput 6 years, 1 month ago

Whg

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Physics is a

Posted by Subir Deb 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Rahul Kumat 6 years, 1 month ago

Physics is study of nature

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Rahul Yadav 6 years, 1 month ago

Subject which can be read by only the students of science ????

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What will be the accelaration due to gravity on the surface of the moon if its radius 1/4 the radius of earth and its mass 1/80 of the mass of the earth ?

Posted by Shubham Durge 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Cbse exam will be conducted between 1st January to 7th fab

Posted by Nisha Choudhary 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Dj Kha 6 years, 1 month ago

0Thank You

Dj Kha 6 years, 1 month ago

Yes

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A carnot engine absorbs 100J of heat energy from a reservoir at 127°c and rejects 600j of heat energy during its cyvle calculate (1) efficiency of the engine (2) temperature of the sink (3) amount of useful workdone percycle

Posted by Tonijeet Potshangbam 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The potential energy of four particles each of mass 1kg placed at the four vertices of a square of side 1 metre

Posted by Manisha Choudhary 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Dj Kha 6 years, 1 month ago

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ANSWER

Show that time of acent equal to time of decent.

Posted by Ruchali Babulkar 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Derived an equation for time of acent of the projectile

Posted by Ruchali Babulkar 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

An ideal engines works between t1 & t2 is used to drive an ideal refrigerator.find ratio of heats

Posted by Onkar Sharma 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What are the uses of polar satellites?

Posted by Rohith K H 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Prem Joshi 6 years, 1 month ago

It is used during wars, disaster and for communication

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Abhilash Maurya 6 years, 1 month ago

It is use military purpose

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ANSWER

Find expression for the total energy of satellite revolving around the surface of the earth.What is the significance of negative sign in this expression?

Posted by Rahul Mahato 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the time period and height of the satellite at height 'h' from the earth?

Posted by Rahul Mahato 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Using newton's law of gravitation prove keplars law of period.

Posted by Rahul Mahato 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the centre of mass of a uniform L-shaped lamila as shown in the fig. The mass of lamila is 3kg

Posted by Riya Kumari 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the height of atmosphere

Posted by Jangu Knowledge And Fun Tv 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is the young modules

Posted by Devashish Kumar 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Young’s Modulus

Young’s modulus is derived from the name of the scientist who defined it.
It is the ratio of longitudinal stress to longitudinal strain.
It is denoted by Y.
Mathematically:
Y= longitudinal stress/ longitudinal strain = σ/ ε
= (F/A)/ (ΔL/L)
Y=FL/ΔL
If Young’s modulus is more, to produce a small change in length more force required.
S.I. Unit is N m^–2 or Pascal (Pa).
Metals have comparatively greater Young’s Modulus. To change the length of metals, greater force is required.

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ANSWER

Define potential difference

Posted by Sujit Kumar 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Potential difference between two points in an electric field may be defined as the amount of work done in moving a unit positive charge from one point to the other point.

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