An electron and a photon each have a wavelength of 2.00nm. Find (i) their momenta (ii) the energy of the photon and (iii) the kinetic energy of electron. `h=6.63xx10^(-34)Js`

Explanation

To solve the problem step by step, we will find the momentum of the electron and photon, the energy of the photon, and the kinetic energy of the electron.

### Given:
- Wavelength (λ) = 2.00 nm = \(2.00 \times 10^{-9}\) m
- Planck's constant (h) = \(6.63 \times 10^{-34}\) Js
- Speed of light (c) = \(3.00 \times 10^{8}\) m/s
- Mass of electron (m) = \(9.1 \times 10^{-31}\) kg

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