1. The problem statement, all variables and given/known data A laser produces light of wavelength 540 nm in an ultrashort pulse. What is the minimum duration of the pulse if the minimum uncertainty in the energy of the photons is 1.0%? 2. Relevant equations ΔEΔt ≥ hbar / 2 3. The attempt at a solution Now I tried a couple ways here: 1. Using Vx = hbar / 2*Pi*elemental charge*0.010%*d giving me 11.7 m/s but soon realized that seemed wrong. 2. Since the uncertainty in energy is 1.0%, i tried substituting it in as ΔE but my end result was wrong. To be honest, I may be overthinking this one but Im kinda stumped as to where to go from here. I greatly appreciate your time! Thank you!