If the de-Broglie wavelength of a particle of mass (\(m\)) is \(100\) times its velocity, then its value in terms of its mass (\(m\)) and Planck's constant (\(h\)) is:
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When combining equations, isolate the variable you want to eliminate (\(v\)) first, then substitute it directly. Keep constants like numbers outside the radical symbol until the final step to keep your algebra clean and fast.