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When we push a box, we are applying force i.e.,action and box is displaced by some length. By newton's third law, for action,there is reaction which is equal and opposite, it means,reaction done by box, F = -F' so both forces should be balanced . But why box slip when applying force,in fact it should be balanced(equal & opposite reaction) ?

Posted by Abhishek Karaiya 7 years, 3 months ago

CBSE > Class 11 > Physics

2 answers

Shubham Kumar 7 years, 3 months ago

Every body has a mass which is its limit , when a force exceeding that mass will be applied on it , that body will change its state When we push a body by a distance , then we have actually exerted more force then a body can exert on us. Body also does some work by making us tired

3Thank You

Yakshi ? 7 years, 3 months ago

Exactly!!!!! I was thinking about this too......according to me....if there is non zero net force means....F+F'is not equal to zero then body will accelerate (newton's second law)i.e.acceleration depends on two factors...net force and mass of obj...but....if we apply constant force on body then an opposite force will act on it simultaneously ....the net force become zero and the body will move with constant velocity because of law of inertia which means object wants to be motion.......

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ANSWER

What is collisions???? and explain its types??

Posted by Ashwini Kumar 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years, 3 months ago

When objects collide, a number of different things can happen depending on the characteristics of the colliding objects. Of course, you know that momentum is always conserved in a closed system. Imagine, though, the differences in a collision if the two objects colliding are super-bouncy balls compared to two lumps of clay. In the first case, the balls would bounce off each other. In the second, they would stick together and become, in essence, one object. Obviously, you need more ways to characterize collisions.

Elastic collisions occur when the colliding objects bounce off of each other. This typically occurs when you have colliding objects which are very hard or bouncy. Officially, an elastic collision is one in which the sum of the kinetic energy of all the colliding objects before the event is equal to the sum of the kinetic energy of all the objects after the event. Put more simply, kinetic energy is conserved in an elastic collisions.

Inelastic collisions occur when two objects collide and kinetic energy is not conserved. In this type of collision some of the initial kinetic energy is converted into other types of energy (heat, sound, etc.), which is why kinetic energy is NOT conserved in an inelastic collision. In a perfectly inelastic collision, the two objects colliding stick together.

In reality, most collisions fall somewhere between the extremes of a completely elastic collision and a completely inelastic collision.

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A nuclie is at rest in the laboratory frame of refference.show that if it disintegrates into two smaller nuclie the product must move in opposite dirextion

Posted by Prince Tomar 7 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Show that the elastic force of a spring is a conservation force hence write an expression for tha potential energy of an elastic stretched spring

Posted by Ishant Saini 7 years, 3 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

if the strength of electromagnetic force between two protons is 1 , what will be the strength of strong nuclear force between them?

Posted by Divya Tripathy 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Shivshant Upadhyay 7 years, 3 months ago

You don't know.

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What is bulk modules

Posted by Harpreet Singh 7 years, 3 months ago

CBSE > Class 11 > Physics

3 answers

Ankur Kumar 7 years, 3 months ago

It is the ratio of normal stress(hydrolytic) and volumetric strain

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Ankit Singh 7 years, 3 months ago

?? Priya

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Priya Dharshini ☺☺ 7 years, 3 months ago

Bulk modulules=pressure×initial volume/change in volume or 1/compressibility

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ANSWER

find the percent decrease in weight of the body when it is taken to a height of 16km above the surface of the earth. radius of the earth is 6400km.

Posted by Anushka Gautam 7 years, 3 months ago

CBSE > Class 11 > Physics

1 answers

Poonam Yadav 7 years, 3 months ago

0.5%

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What are the limitations of nuclear chain reaction. How this limitation can be overcome using nuclear reaction

Posted by Ayushi Patel 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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64 droplets of water of radius I mm are combined to form a bigger drop.Is the process endothermic or exothermic. What is the change in energy of the system

Posted by Aditya Vaidya 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Mitanshu Chadha 7 years, 3 months ago

????????

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Aman Singh 7 years, 3 months ago

This process is exothermic process and energy is released in this process.

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ANSWER

Someone please tell me that,"why sky appears blue in colour?"

Posted by Akash Handa 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years, 4 months ago

sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight

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ANSWER

Coefficient of thermal conductivity

Posted by Ɽøⱨł₮ ₲Ʉ₱₮₳ 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Kushal Mishra 7 years, 4 months ago

The coefficient of thermal conductivity of a material is equal to the amount of heat given to its rod of unit length and unit area of cross section in unit time when the temperature difference between its ends is 1 degree C in steady state.

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what is full form of SMG

Posted by Amanjot Singh 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is modulus of rigidity of fluid?

Posted by Vivek Gairola 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years, 3 months ago

In water, and indeed all (Newtonian) fluids, the shear modulus is zero because if you apply a force the liquid simply flows and the strain becomes arbitrarily large

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Name a quantity whoes si unit is Wm-¹k—1

Posted by Niraj Thakur 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is ampere?

Posted by Om Prakash Yadav 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Pardeep Singh 7 years, 4 months ago

It is si unit of current

2Thank You

Rudransh Kalia 7 years, 4 months ago

a unit of electric current equal to a flow of one coulomb per second.

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ANSWER

what is Pascal law

Posted by Sanjay Bhadouriya 5 years, 11 months ago

CBSE > Class 11 > Physics

4 answers

Sheetal Singh 7 years, 3 months ago

Pascal's law basically states that any pressure applied to a fluid inside a closed system will transmit that pressure equally in all directions throughout the fluid.

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Mitanshu Chadha 7 years, 3 months ago

??????????

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Ruru ❤️ 7 years, 4 months ago

Pascal law states that pressure ob a fluid at rest is same at all the points if we ignore gravity.

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Mahi Yadav 7 years, 4 months ago

Define its simple defination

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what is scal

Posted by Huidrom Pravakaran 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

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Finf the force required to give the masa of 70kg and acceleration of 4 m/s^2 A. Horizontally B. Vertically

Posted by A B 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

If energy can't be created then where did energy comes from???

Posted by Anand Mahto 7 years, 4 months ago

CBSE > Class 11 > Physics

1 answers

D-Evil ??? 7 years, 4 months ago

I appreciate your question bro, But you will get to know its answer just by completing tne statement as it is transfered from one form to another. It is just transfered. And everything in the world comprise with energy ---- Punitjat YT 47

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ANSWER

What r different formulas for angular momentum(L) in rotational motion

Posted by Priya Dharshini ☺☺ 7 years, 4 months ago

CBSE > Class 11 > Physics

5 answers

Ankit Singh 7 years, 4 months ago

Its formula is (ANGULAR MOMENTUM- mvr)

2Thank You

Priya Dharshini ☺☺ 7 years, 4 months ago

Thanks

1Thank You

Sakshi?? Dubey 7 years, 4 months ago

angular momentum is product of inertia and angular velocity. Angular momentum=mvr

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Priya Dharshini ☺☺ 7 years, 4 months ago

Any other formula ??

3Thank You

Aniket Paul 7 years, 4 months ago

L=IW(W=OMEGA)

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ANSWER

Why stress is a tensor quantity?

Posted by Mohd Umair 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

a stone breaks tbe wi dow oane into pieces while a bullet perces through the same. give reason

Posted by Anish Kashyap 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Work done in isothermal process

Posted by Sejal Sharma 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A fire fighter is holding a hose pipe from which liquid of density p is gushing out with velocity v. if r is radius of the hosepipe , then the force exerted by the firefighter to hold the pipe is ?

Posted by Shruti Gupta 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Question paper or last year post mid term

Posted by Anjali Ramteke 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

G Night Everyone?????????????????

Posted by Faizan Khan?? 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Which students are study DAV School ,CBSE Aflliated

Posted by Faizan Khan?? 7 years, 4 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why is steel is more elastic than rubber. Explain

Posted by Krupali Sonar 7 years, 4 months ago

CBSE > Class 11 > Physics

2 answers

Ankit Singh 7 years, 4 months ago

Right answer priya

2Thank You

Priya Dharshini ☺☺ 7 years, 4 months ago

everyone thinks that rubber is more elastic than any thing else, because elastic is a synonym for rubber in day to day life, but in physics it is different. elasticity as a property is measured by young’s modulus(Y) the greater the value of ‘Y’ the material is more elastic. Y=Stress/strain here stress is proportional to applied force and strain is proportional to elongation of specimen. now take two identical rods of steel and rubber and apply equal forces on their ends, now measure the elongation in them, obviously the elongation in rubber rod is much greater than that of steel rod. so the value of Y for Steel gets much larger than that for rubber, and so steel is more elastic than rubber. I just gave detailef explanation because this is mostly asked question in mechanical properties of solid.hope u understood the concepts involved in it

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ANSWER

Find gravitation acceleration at Re/4 height from surface?

Posted by Amulya Srivastava 7 years, 4 months ago

CBSE > Class 11 > Physics