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The rifle and bullet have zero momentum and zero kinetic energy to start with. When the trigger is pulled, the bullet gains some momentum in the forward direction, but this is canceled by the rifle's backward momentum, so the total momentum is still zero. The kinetic energies of the gun and bullet are both positive scalars, however, and do not cancel.
What type of radiation is produced by a hot object emitting energy?
Which law states that the ratio of the potential difference across a conductor to the current through it is constant, provided the temperature remains c...
Which among the following is not a characteristic of transition metals?
Which of the following materials exhibits piezoelectric effect?
The kinetic energy of a body is directly proportional to —
What is the SI unit of magnetic flux?
What are the dimensions of the coefficient of viscosity?
Which of the following materials is most suitable for marking electromagnetic and core of transformer?
An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is New...
You are asked to jog in a circular track of radius 35 m. Right one complete round on the circular track, your displacement and distance covered by you r...