The mass of an electron is `9.1xx10^(-31)` kg. If its K.E.is `3.0xx10^(-25)` J,then calculate it's wavelength

An electron is moving with kinetic energy of '2.275 xx 10^(-25) J .' Calculate its de Broglie wavelength: '(m_e=9.1 xx 10^(-31), kg, h=6.6 xx 10^(-34) Js)'

What is the radius of the path of an electron (mass 9 xx 10^(-31)kg and q= 1.6 xx 10^(-19)C) moving at a speed of 3 xx 10^(7) ms^(-1) in a magnetic field of 6 xx 10^(-4)T perpendicular to it? What is the frequency? Calculate energy in Kev (1eV = 1.6 xx 10^(-19)J)

The uncertainty in the momentum of an electron is '1 xx 10^(-5) kg ms^(-1)'. The uncertainty in its position will be '(h=6.62 xx 10^(-34) kg m s^(-1))'

Energy of an electron in the ground state of hydrogen atom is -2.18 xx 10^(-18) J . Calculate the inoisation enethalpy of atomic hydrogen in J mol^(-1) .

The photon has a momentum as well as a wavelength . A photon has a mass of 8.6 xx 10^(-30) kg. Calculate the wavelength. [Plank's constant, h = 6.626 xx 10^(-34) Js]

The photon has a momentum as well as wavelength A photon has a mass of 8.6xx10^(-30) kg. Calculate the wavelength (h=6.626xx10^(-34)Js)