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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 ago

CBSE > Class 11 > Physics

2 answers

Shubham Kumar 7 years 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

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Yakshi ? 7 years 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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What is collisions???? and explain its types??

Posted by Ashwini Kumar 7 years ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years 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 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 ago

CBSE > Class 11 > Physics

0 answers

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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 ago

CBSE > Class 11 > Physics

1 answers

Shivshant Upadhyay 7 years ago

You don't know.

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What is bulk modules

Posted by Harpreet Singh 7 years ago

CBSE > Class 11 > Physics

3 answers

Ankur Kumar 7 years ago

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

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Ankit Singh 7 years ago

?? Priya

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Priya Dharshini ☺☺ 7 years 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 ago

CBSE > Class 11 > Physics

1 answers

Poonam Yadav 7 years 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 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 ago

CBSE > Class 11 > Physics

2 answers

Mitanshu Chadha 7 years ago

????????

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Aman Singh 7 years 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 ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 7 years 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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Coefficient of thermal conductivity

Posted by Ɽøⱨł₮ ₲Ʉ₱₮₳ 7 years ago

CBSE > Class 11 > Physics

1 answers

Kushal Mishra 7 years 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 ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is modulus of rigidity of fluid?

Posted by Vivek Gairola 7 years ago

CBSE > Class 11 > Physics

1 answers

Rudransh Kalia 7 years 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 ago

CBSE > Class 11 > Physics

0 answers

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What is ampere?

Posted by Om Prakash Yadav 7 years ago

CBSE > Class 11 > Physics

2 answers

Pardeep Singh 7 years ago

It is si unit of current

2Thank You

Rudransh Kalia 7 years 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, 8 months ago

CBSE > Class 11 > Physics

4 answers

Sheetal Singh 7 years 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 ago

??????????

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Ruru ❤️ 7 years 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 ago

Define its simple defination

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what is scal

Posted by Huidrom Pravakaran 7 years 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 ago

CBSE > Class 11 > Physics

0 answers

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

Posted by Anand Mahto 7 years ago

CBSE > Class 11 > Physics

1 answers

D-Evil ??? 7 years 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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What r different formulas for angular momentum(L) in rotational motion

Posted by Priya Dharshini ☺☺ 7 years ago

CBSE > Class 11 > Physics

5 answers

Ankit Singh 7 years ago

Its formula is (ANGULAR MOMENTUM- mvr)

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Priya Dharshini ☺☺ 7 years ago

Thanks

1Thank You

Sakshi?? Dubey 7 years ago

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

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Priya Dharshini ☺☺ 7 years ago

Any other formula ??

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Aniket Paul 7 years ago

L=IW(W=OMEGA)

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ANSWER

Why stress is a tensor quantity?

Posted by Mohd Umair 7 years 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 ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Work done in isothermal process

Posted by Sejal Sharma 7 years ago

CBSE > Class 11 > Physics

0 answers

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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 ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Question paper or last year post mid term

Posted by Anjali Ramteke 7 years ago

CBSE > Class 11 > Physics

0 answers

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

Posted by Faizan Khan?? 7 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Which students are study DAV School ,CBSE Aflliated

Posted by Faizan Khan?? 7 years ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Why is steel is more elastic than rubber. Explain

Posted by Krupali Sonar 7 years ago

CBSE > Class 11 > Physics

2 answers

Ankit Singh 7 years ago

Right answer priya

2Thank You

Priya Dharshini ☺☺ 7 years 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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Find gravitation acceleration at Re/4 height from surface?

Posted by Amulya Srivastava 7 years ago

CBSE > Class 11 > Physics