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ANSWER

Define breaking stress. A heavy wire is suspended from a roof and no weight is attached to its lower end. Is it under stress?

Posted by Dyanesh R 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Yes, due to the gravitational pull on the wire, it is under and which will increase on increasing this pull.

Stress: The stress applied to a material is the force per unit area applied to the material. The maximum stress a material can stand before it breaks is called the breaking stress or ultimate tensile stress. Tensile means the material is under tension. The forces acting on it are trying to stretch the material.

ANSWER

Derive the three kinematics equation

Posted by Lil. Viper 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Mannat Khurana 6 years, 1 month ago

V=u+at S=1/2at^2+ut V^2=u^2+2as

ANSWER

Prove that elastic potential energy per unit volume is half stress into strain

Posted by Anshika Bais 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Vanshaayu Prajapati 6 years, 1 month ago

We know, Young's modulus is the ratio of stress to strain. e.g., Y = stress/strain. if we assume a wire of length L, area of cross section A is fixed at one end and stretched by suspended a load M from the other end due to this extension of wire is x. = 1/2 × load × extension

ANSWER

I prepared for IIT-JEE fir two years and now my JEE mains exams are over im focusing on boards now i need to clear ncert and i dont know the way of writing in guidingboards from where should i start im totally confused.

Posted by Aryan Bhavsar 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Aryan Bhavsar 6 years, 1 month ago

Hey, Lil Viper you dont know who i am dont be so rude to others i've already reported your answer i didnt ask you personnaly i asked in community okay? I didnt even forced you to reply to my question.Be in your limits...?

Lil. Viper 6 years, 1 month ago

Go home and study you silly boy ?????just asking stupid questions

ANSWER

If E,G,M,Respectively denoted energy mass angular momentum and gravitational constant EJ square per unit M 5G2

Posted by Sanjana Mandrah 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Robinpreet Kaur 6 years, 1 month ago

Rewrite the question

ANSWER

Force accerlatiin

Posted by Vishal? Kumar 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Important question for sahodya 2019-20

Posted by Tech Knows . 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Lil. Viper 6 years, 1 month ago

Study all chapters properly u will find every questions easy

ANSWER

Projectile motion and explain it horizontal projection

Posted by Sanjana Mandrah 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

When a particle is thrown obliquely near the earth’s surface, it moves along a curved path under constant acceleration that is directed towards the center of the earth (we assume that the particle remains close to the surface of the earth). The path of such a particle is called a projectile and the motion is called projectile motion. Air resistance to the motion of the body is to be assumed absent in projectile motion.

In a Projectile Motion, there are two simultaneous independent rectilinear motions:

Along x-axis: uniform velocity, responsible for the horizontal (forward) motion of the particle.
Along y-axis: uniform acceleration, responsible for the vertical (downwards) motion of the particle.

ANSWER

Centre of mass In rigid body

Posted by Sanjana Mandrah 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Centre of mass of a body or system of a particle is defined as, a point at which whole of the mass of the body or all the masses of a system of particle appeared to be concentrated.

ANSWER

What is adhesive

Posted by Shahana Perwin 6 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Shubhanjali Singh Gaur 6 years, 1 month ago

Adhesive means attached between molecules or any other thing . in other words , it works like a glue . i hope you can understand this.

Yogita Ingle 6 years, 1 month ago

Adhesion happens between two dissimilar molecules or substances.
Adhesion is generally the force of attraction present between the water molecules and the walls of xylem vessels.
Capillary action and meniscus (the curved surface which is formed by any liquid in a cylinder) are the effects of adhesion.

Suyash Singh 6 years, 1 month ago

The force of attraction between molecules of different substances example oil -water

ANSWER

explain bournellis principal

Posted by Casendra Shyrmang 6 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Gautam Prajapati 6 years, 1 month ago

It states that the sum of pressure energy, kinetic energy, and potential energy per unit volume of an ideal fluid (incompressible, non viscous, steady flow and irrotational) remains constant.

Vanshaayu Prajapati 6 years, 1 month ago

In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738.

Robinpreet Kaur 6 years, 1 month ago

It states increase in speed of fluid and decrease in static pressure simultaneously. OKKKKK

4Thank You

ANSWER

Is the paper of 12 come from only ncert or any other book

Posted by Bobby Nachehal 6 years, 1 month ago

CBSE > Class 11 > Physics

7 answers

Lil. Viper 6 years, 1 month ago

No it will come from foreign

Lil. Viper 6 years, 1 month ago

No it will come from foreign books ????

Lil. Viper 6 years, 1 month ago

Nk it will come from foreign books ????

Sakshi Rai 6 years, 1 month ago

All the questions is from ncert

Robinpreet Kaur 6 years, 1 month ago

Hi Adhya

Adhya Singh 6 years, 1 month ago

Why are you caring about 12th paper

Robinpreet Kaur 6 years, 1 month ago

Are you in 12

ANSWER

Derivation of elastic potential energy

Posted by Devesh Raghuwanshi 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is S.H.M

Posted by Sarla Sarathe 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Simple Harmonic Motion (SHM) is a periodic motion the body moves to and fro about its mean position.The restoring force on the oscillating body is directly proportional to its displacement and is always directed towards its mean position.

ANSWER

Define newton first law of motion

Posted by Anant Tyagi 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Niraj Study Junction 6 years, 1 month ago

According to Newton's 1st law of motion A body will not change its position ( rest or motion) until the external force applied on it.

Himani Bhatia 6 years, 1 month ago

Same as ncert

ANSWER

Which is shm equation

Posted by Chhvi Priya 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Chirag Sharma 6 years, 1 month ago

X=Acos(wt+C)

Mann Panchal 6 years, 1 month ago

x(t)= A cos (wt +¢) where A w and ¢ are constant w is omega and ¢ is phi

ANSWER

Pascal's law of dervation.

Posted by Harsh Godala 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What isthe importance of the Bernoulli's Theorm ???

Posted by Robinpreet Kaur 6 years, 1 month ago

CBSE > Class 11 > Physics

3 answers

Vansh Prajapati 6 years, 1 month ago

Bernoulli's Principle is the single principle that helps explain how heavier-than-air objects can fly. Bernoulli's Principle states that faster moving air has low air pressure and slower moving air has high air pressure. Air pressure is the amount of pressure, or "push", air particles exert

4Thank You

Farhat Shaikh Shaikh 6 years, 1 month ago

Bernoulli's theorem is the only principal which states that how can the object heavier than air can fly it also states that faster moving has low air pressure while the slow moving air has higher pressure.

Divanshu Rawat 6 years, 1 month ago

Because it tell about the energy conservation during a streamline flow

ANSWER

Discuss analytically stationary waves for string and closed organ pipe

Posted by Ritik Soni 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

True / False The minimum height of the plane mirror required to view the full image of an object is 1/2 of the height of the object.

Posted by Suryansh Agarwal 6 years, 1 month ago

CBSE > Class 11 > Physics

2 answers

Niraj Study Junction 6 years, 1 month ago

False because mirror is required of same height of object

Arpit Raj 6 years, 1 month ago

False

ANSWER

Who discovered electron

Posted by Suprit Suprit 6 years, 1 month ago

CBSE > Class 11 > Physics

6 answers

Rupesh Jha 6 years, 1 month ago

Sir jj Thompson

Niraj Study Junction 6 years, 1 month ago

JJ Thomson

Diksha Singh 6 years, 1 month ago

Maine

Beast Boy 6 years, 1 month ago

Sir JJ. Thomson

Chirag Sharma 6 years, 1 month ago

JJ thomson

Yogita Ingle 6 years, 1 month ago

The Electron was discovered by J.J Thomson by conducting a Cathode ray tube experiment. For the experiment he used Crooke's tube, which was 60cm long glass tube and had a small tube attached.

ANSWER

Calculate the amount of heat required to convert 1kg of ice at_10 degree Celsius into steam at 100 degree Celsius

Posted by Anand Kumar 6 years, 1 month ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Work energy theory

Posted by Sourabh Simran 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Vansh Prajapati 6 years, 1 month ago

The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle.

ANSWER

Expression for work done in isothermal and adiabatic

Posted by Anshul Chouhan 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Niraj Study Junction 6 years, 1 month ago

2.303 × nRT log (V2/V1)

ANSWER

Zeroth law definition

Posted by Naveen Sinwar 6 years, 1 month ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 1 month ago

Zeroth law of thermodynamics states that when two systems are in thermal equilibrium through a third system separately then they are in thermal equilibrium with each other also.

For eg: - Consider two systems A and B which are separated by an adiabatic wall. Heat flow happens between systems A and C, and between B and C, due to which all 3 systems attain thermal equilibrium.