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grapejellypie
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Homework Statement
A 220lb fullback runs the 40-yd dash at a speed of 19.6 ± 0.1 mi/h. What is he de Broglie wavelength (in meters)?
Homework Equations
de Broglie Wavelength: λ=h/(mu), where λ=wavelenght, h=6.626 x 10^(-34) kgm^2)/s, m=mass (kg), and u= speed
The Attempt at a Solution
u=19.6 m/s x (1m / 0.6214mi) x (3600s / 1h) = 113550 m/s
m= 220lb x (0.4536kg/ 1lb) = 99.792kg
λ= [6.626 x 10^(-34) kgm^2)/s] / [99.792kg x 113550 m/s]
=5.847 x 10^-41 m (MY ANSWER)
The answer in the back of the book is 7.6 x 10^-37 m