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  • 3 answers

Madan Mehta 2 months, 4 weeks ago

How I can delete this

Madan Mehta 2 months, 4 weeks ago


Madan Mehta 2 months, 4 weeks ago

  • 2 answers

Tanzeem Naqvi 2 months, 1 week ago

Every action has equal and opposite reaction

Yogita Ingle 3 months ago

Newton’s Third Law of Motion states that there is always reaction for every action in opposite direction and of equal magnitude.

Explanation: Whenever a force is applied over a body, that body also applies same force of equal magnitude and in opposite direction.


  1. Walking of a person: A person is able to walk because of the Newton’s Third Law of Motion. During walking, a person pushes the ground in backward direction and in the reaction the ground also pushes the person with equal magnitude of force but in opposite direction. This enables him to move in forward direction against the push.
  2. Recoil of gun: When bullet is fired from a gun, the bullet also pushes the gun in opposite direction, with equal magnitude of force. This results in gunman feeling a backward push from the butt of gun.
  3. Propulsion of a boat in forward direction: Sailor pushes water with oar in backward direction; resulting water pushing the oar in forward direction. Consequently, the boat is pushed in forward direction. Force applied by oar and water are of equal magnitude but in opposite directions.
  • 2 answers

Fatima Zahra 3 months, 1 week ago

Physics is a branch of science that deals with the study of object in motion or in rest and laws of physics

Anuj Singh 3 months, 1 week ago

Physics is a branch of science where we learn about anything in motion or at rest, its laws, etc.
  • 2 answers

Anuj Singh 3 months, 1 week ago

It is a type of motion in which the particle periodically passes through its mean position again and again.

Suyash Shukla 4 months ago

Simple harmonic motion
  • 0 answers
  • 1 answers

Gaurav Seth 4 months, 4 weeks ago

  • Sound is a form of energy which produces a sensation of hearing in our ears.
  • Sound is produced due to the vibration of objects. Vibration is the rapid to and fro motion of an object.
  • Vibrating objects are the source of all sounds Irregular, chaotic vibrations produce noise Regular, controlled vibration can produce music All sound is a combination of pure frequencies
  • A stretched rubber band when plucked vibrates and produces sound.
  • 1 answers

Anuj Singh 3 months, 1 week ago

Refer ncert physics book chapter w
  • 1 answers

Harsh Yadav 5 months, 3 weeks ago

1/2 m(v×v)
  • 0 answers
  • 2 answers

Harsh Yadav 5 months, 3 weeks ago

Anybody cannot change its state unless an external force is applied on it

Fardeen Alam 6 months, 1 week ago

  • 3 answers

Arjun Rajput 6 months ago

Starting with formula of acceleration A=v-u/t and arrange it

Ngamminthang Lhanghal 6 months, 1 week ago

What is the procedure to through JEE MAIN

Ngamminthang Lhanghal 6 months, 1 week ago

  • 1 answers

Yogita Ingle 7 months ago

Van de graaff generator is used to generate high voltages of the order of a few million volts. This results in generation of large electric fields for experimental purposes.


  • The inner sphere has a higher potential than outer if the charge q is positive.
  • If the two spheres are connected through a wire, the charge will flow from high to low potential.
  • Thus, providing smaller potentials at the inner sphere will keep building large amount of charge at the outer sphere, till the breakdown field of air (3 x 106 V/m) is reached.
  • This accumulates close to millions of volts.
  • 6 answers

Anurag Chaturvedi 5 months, 2 weeks ago

If g= 9.8 then answer 98 If g= 10 then answer 100

Pratham Bindal 6 months, 1 week ago


Ankit Garg 6 months, 2 weeks ago

Incomplete ques

Ashish Gupta 6 months, 2 weeks ago


Mukesh Devi 7 months ago


Ankit Chauhan 7 months ago

  • 1 answers

Gaurav Seth 7 months, 1 week ago

A block of mass m is suspended by a light thread from an elevator. the elevator is accelerating upward with uniform acceleration ‘a’. 
we know, Newton's law doesn't valid in non-inertial frame of reference. so, we have to add Psuedo force just opposite direction of it motion to make inertial frame of reference.
so, tension in the thread = mg + ma→ [ Psuedo force] 
tension = m(g + a) 

now, we have to find displacement of elevator. 
use formula, S = ut + 1/2 At² 
here A is net acceleration acts on elevator.
here u = 0, A = a [ upward direction]
so, S = 0 + 1/2 at² 
hence, displacement is 1/2at² 

now, workdone = Tension × displacement
= m(g + a) × 1/2 at² 
= 1/2 m(g + a)at² Joule 

  • 3 answers

Rahul Verma 6 months, 3 weeks ago

Simply light is an electromagnetic wave.

Aman Kataria 8 months, 1 week ago

Light is a form of energy that is emitted or absorbed by an body in the form of electromagmetic waves . It has dual nature wave and particle .

Ayush Mishra 8 months, 3 weeks ago

Light is a form of energy which produces visible sensation in our 👀 eyes
  • 3 answers

Aman Kataria 8 months, 1 week ago

It is around 1.6 × 10^-19 C .

Arup Das 9 months, 1 week ago


Kartik Kitukale 9 months, 2 weeks ago

As nucleus have neutral neutrons and positive protons total charge on nucleus os positive there is no relation between charge on nucleus by that of electrons
  • 2 answers

Aditya Kaushal 11 months, 1 week ago

What made them charged???? This is my question??

Harsh Jha 11 months, 1 week ago

They doesn't get charged from anywhere because they are charged ones.
  • 1 answers

Sushanta Karmakar 9 months, 3 weeks ago

Electric field is generated due to a point charge or a system of charges. The point charge or a system of charge interact with other charges via the electric field produced by them.

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