Question

How fast is an electron moving if it has a wave number is equal to the square of distance it travels in one second?​

Answer 1

Answer:

Here we are given that wavelength is equal to the distance travelled by the electron in 1 second, i.e. Place the values for h and m in the above equation that we have solved for v, i.e. Therefore, the electron is moving with a velocity of 0.027 m/s.

Answer 2

= 0.027 m/s

The distance travelled in one second = velocity (v)

Given wavelength (λ) = velocity (v)

Therefore λ = h/mv becomes v = h/mv

⇒v2 = h/m

v=(√h/√m)

h is the Planck’s constant = 6.626 x 10-34 J s

m is the mass of the electron = 9.10939 x 10-31 kg

v = √6.626 x 10-34 J s/√9.10939 x 10-31 kg

= 0.027 m/s