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Yes, the DeBroglie equations uses SI units for all of the units involved in the equation. It is important to also remember that velocity is meters per seconds. So if you are given anything other than these units, for example kilometers per hour, you would have to convert this to meters per second.
You also need to remember that you are dividing Planck's constant by the momentum and the units for Plank's constant is J(s) where Joules is kg⋅m2⋅s−2. So, in order for the two masses units to cancel out, you have to use kg in the denominator as well. It's always about using the same units as the constants given so the units can cancel out.
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