Question

The wavelength associated with a proton moving at speed40 is

Answer 1

Answer:

The wavelength associated with a proton is 0.397 nm

Answer 2

Concept:

• de Broglie wavelength
• λ = h/mv
• Proton

Given:

• The velocity of the proton = 40 m/s
• Planck's constant h = 6.626 * 10^-34
• The mass of the proton m = 1.67 * 10^-27 kg

Find:

• The de Broglie wavelength λ of the proton with the speed of 40 m/s

Solution:

We know the de Broglie wavelength can be calculated from the following formula

λ = h/mv

where, h is Planck's constant, m is the mass of the proton and v is the speed of the proton.

λ = 6.626 * 10^-34 /1.67 * 10^-27 * 40

λ = 1.58 * 10^-5 m

The wavelength is 1.58 * 10^-5 m.

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