Physics

$λ=mvh $ (de broglie wavelength)

$ΔxΔp>2ℏ $

$ΔEΔt>2ℏ $

where $Δx$ is the uncertainty in position,

$Δp$ is the uncertainty in momentum and

$ℏ$ is the reduced Planck's constant

$λ=mvh $

$⇒m=υλh =6.6×10_{−24}×10_{2}6.6×10_{−34} =10_{−12}kg$

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