I have a mass of $90\;kg$. What is my wavelength, if I move with $4\frac{km}{h}$
$\lambda$ $=$ $\frac{h}{mv}$ $=$ $\frac{6.626\cdot 10^{-34}}{90\cdot 4\cdot \frac{1000}{3600}}$ = $6.626 \cdot10^{-36}\;m$
