Two electrons are moving towards each other, each with a velocity of `10^6ms^-1`. What will be closest distance of approach between them?

If two bodies are moving towards each other without any external forces and join, then centre of mass

A man claps near a cliff and echo is heard after 5 s. If the velocity of sound is 346 ms^-1 , then what will be the distance between the man and the cliff ?

Calculate the wavelength of an electron moving with a velocity of 2.05 ms-1

An electron is moving northwards with a velocity of 10^(7)ms^(-1) in a magnetic field of 3 T,directed downwards.Calculate the instantaneous force on the electron. Given that charge on electron = 1.6 xx 10^-19C

A beam of electron is moving with a velocity of 3xx10^6ms^-1 and carries a current of 1muA . How many electrons are in 1 m of the beam?

Two identical particles of mass m carry a charge Q, each. Initially one is at rest on a smooth horizontal plane and the other is projected along the plane directly towards first particle from a large distance with speed v. The closest distance of approach be .

A beam of electron is moving with a velocity of 3xx10^6ms^-1 and carries a current of 1muA . How many electrons per second pass a given point ?

Calculate the wavelength of an electron moving with a velocity of 2.05×10 7 ms −1

A bird is tossing (flying to and fro 0 between two cars moving towards each other on a straight road. On car has a speed of 18 km /h while the other has the speed of 27 km /h. The bird starts moving from first caer towards the other and is moving with the speed of 36 km /h and when the two cars were separated by 36 km. What is the total distance comered by the bird ? What is the total displacement of the bird ?

An electron eneters a magnetic field of 5 T intensity with velocity of 5xx10^6ms^-1 at an angle of 30^@ with the field. Find the magnitude of the force acting on the electron.