Calculate the wavelength of an electron traveling at 1.14×10^5 m/s?

djl

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I know this question is relatively straight forward, but when i try to submit the answer, the program I'm using keeps telling me it's incorrect. I used the formula Lambda = h/mv :

(6.62600 * (10^(-34))) / ((9.10900 * (10^(-31))) * (1.14 * (10^5))) = 6.38081096 × 10-9

Can someone pleeease tell me why this is wrong?!!?
 
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