Question

a moving electron has a de broglie wavelength length of 7×^10-2 calculate its kinetic energy​

Answer 1

answer:

λ= h/ (√2mE)

7×10⁻² = 6.626×10⁻³⁴ / √(2 × 9.1× 10⁻³¹ ×E)

E= 0.060 ×10 ^41