de Broglie wavelength = h/m*v
Substitute and solve.
Post your work if you get stuck.
Calculate the wavelengths:
-A muon (a sub particle with the mass of 1.884 X 10^-25g) traveling at 320.0 m/s
-an electron (me=9.10939 x 10^-28g) moving at 3.85 x 10^6 m/s
-An 83.0kg athlete running a "4 minute mile" (i.e. 400min/mile)
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