How Does the DeBroglie Wavelength of an Electron Compare to Familiar Objects?

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pdhakal
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a. Find the deBroglie wavelength of an electron traveling at 2*10^6 m/sec.
b. Does this length come close to any familiar dimensions? Explain

For part a. I did
lambda=h/(mv)
=(6.626*10^-34 J sec)/(9.11*10^-31 kg*2*10^6 m/sec)
= 3.64*10^-10 meters

I have the first one but I did not understand the second part.
Could someone please help me with this?
Thanks
 
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Do you know some structure with a size of roughly 3.64*10^(-10) meters?
10^(-10)m even has a special name due to its importance.
 
I don't have any idea about the structure roughly to taht size but I know 10^-10 is 1 Armstrong