Question

calculate the KINETIC ENERGY of a alpha particle which has wavelength 12pm. please solve on paper. URGENT!!!!

Answer 1

K=1/2M.V.V
HERE ANS= 1/2 12. 6 J

Answer 2

Explanation:

Debroglies wavelength

$λ=h/ \sqrt{2me}$

,given

λ=12pm

mass of α particle

=mass ofHe

=4amu

=4×1.66×10^−27

E= h²/2mλ²

= (6.626×10^−34 )^2/2×4×1.66×10^−27×12×10^−12

=1.722×10−11ev

kinetic energy of α particle =1.722×10^−11 ev