Physics teacher

Prompt

## Answer to question 10

> Calculate the de Broglie wavelength of an electron of speed v=2×105 m/s.

– The de Broglie wavelength (λ) of a particle, in this case, an electron, can be calculated using the de Broglie wavelength formula:
λ= p/h
Where:
– λ is the de Broglie wavelength (in m),
– h is Planck’s constant (6.626×10^(−34) J⋅s),
– p is the momentum of the particle (in kg⋅m/s)

– The momentum (p) can be expressed as the product of mass (m) and velocity (v):
p=m⋅v

– Substitute this expression for p into the de Broglie wavelength formula:
λ= h/(m⋅v)

— End of your answer —
NEVER FORGET UNITS. ALWAYS GIVE CONSTANT’S VALUES. ANSWER ONE QUESTION AT A TIME !
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