An electron with a mass of 9.11x10-31 kg and traveling at a velocity of 1.19x10^7 m/s has a wavelength which is measurable. What is the wavelength?

Answer 1

We can solve this using the following equation:

λ= h/mv

Where λ is the wavelength, h is Planck's constant, m is the mass of the particle, and v is the velocity.

We know:

Mass: 9.11x10^-31 kg

Velocity: 1.19x10⁷ m/s

Planck's constant: 6.626x10^-34 js

Plugging in our values:

λ = (6.626x10^-34)/ (9.11x10^-31)(1.19x10⁷)

λ= (6.626x10^-34)/(10.84x10^-24)

λ= 0.611x10^-10) or 6.11x10^-11m