Calculate the wavelength of an electron (m = 9.11 * 10-28 g) moving at 3.66 * 106 m/s.

The answer is 1.99 * 10⁻¹⁰ m.

To calculate this we will use De Broglie wavelength formula:

λ = h / (m*v)

λ - the wavelength

h - Plank's constant: h = 6.626 * 10⁻³⁴ Js

v - speed

m - mass

It is given:

λ = ?

m = 9.11 * 10⁻²⁸ g

v = 3.66 * 10⁶ m/s

After replacing in the formula:

λ = h / (m*v) = 6.626 * 10⁻³⁴ / (9.11 * 10⁻²⁸ * 3.66 * 10⁶) = 1.99 * 10⁻¹⁰ m