A beam of helium atoms moves with a velocity `2.0 xx 10^(3) ms^(-1)`. Find the wavelength associated with a helium atom `(h = 6.626 xx 10^(-34))`

If the velocity of the electron in Bohr's first orbit is 2. 19 xx 10 ^(5) ms ^(-1). Calculate the de-Broglie wavelength associated with it .

Calculate the wavelength associated with an electron moving with a velocity of 10^(3) m s^(-1).

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?

If the velocity of electron in bohr's is 3.5(10*6)ms-1, calculate the de broglie wavelength associated with it.

The electron moves around the ucelus in a hydrogen atom of radis 0.51overset(@)A , with a speed of 2xx10^5ms^-1 . Calculate the following: The magnetic moent associated with the electron take e = 1.6 xx 10^-19 C and mu_0 = 4 pi xx 10^-7 SI units.