A certain rifle bullet has a mass of 9.09 g. Calculate the de Broglie wavelength of the bullet traveling at 1673 miles per hour.
Please be very specific on final answer. I tried this 7.52×10^-42 m but it says it`s incorrect.
Thank you
Please be very specific on final answer. I tried this 7.52×10^-42 m but it says it`s incorrect.
Thank you
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de Broglie wavelength [1] (λ):
λ = h/(m×v)
Planck constant h = 6.626×10^-34 J s, m = mass of particle in kg, v = speed in m s^-1,
λ in m
mass in kg = 9.09×10^-3 kg v in m s^-1 = 1673×1609/60×60 = 748 m s^-1
λ = h/(m×v) = (6.626×10^-34)/[(9.09×10^-3)×(748)] = 9.75×10^-35 m
[1] http://chemistry.about.com/od/workedchem…
Sorry about previous answer!
λ = h/(m×v)
Planck constant h = 6.626×10^-34 J s, m = mass of particle in kg, v = speed in m s^-1,
λ in m
mass in kg = 9.09×10^-3 kg v in m s^-1 = 1673×1609/60×60 = 748 m s^-1
λ = h/(m×v) = (6.626×10^-34)/[(9.09×10^-3)×(748)] = 9.75×10^-35 m
[1] http://chemistry.about.com/od/workedchem…
Sorry about previous answer!
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It only semiregistered with me that the velocity of the bullet was way too high in my earlier calculation! I spotted it immediately you alerted me that my original answer was wrong. I guess I got it right this time. Thanks for your vote (and the thumbs). BII
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