Calculating the velocity of electron

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To calculate the velocity of an electron with a de Broglie wavelength of 555 nm, the relevant equation is λ = h/mv. The mass of the electron must be converted to kilograms, resulting in approximately 9.13297 x 10^-25 kg. After performing the necessary calculations using Planck's constant, the correct approach involves ensuring all units are consistent, specifically using SI units. The final calculation yields the velocity of the electron based on the provided values. Accurate unit conversion and detailed steps are crucial for obtaining the correct answer.
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1. Problem: If the de Broglie wavelength of an electron is 555nm, what is its velocity?


2. Homework Equations
- λ = h/mv

3. Ok so i first did the amu-g conversion. so i got the mass of the electron is (9.13297 x 10^-28g), then i did nm-m conversion so (555 x 10^-9m) and i multiplied them and then divided by Plancks constant but i got the wrong answer?
 
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You need to show more work then this. Also, if you're using SI units, you must convert to kg, not grams.
 
nvm i got the answer. its (6.6262x10^-34Js)/((9.13297x10^-25kg)/(555x10^-9m))
 

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