If Planck's constant were changed to 660 J.s, the uncertainty in the speed of the 120-kg...
If Planck's constant were changed to 660 J.s, the uncertainty in the speed of the 120-kg running back is 1.7 m/s. The minimum uncertainty in the position of the running back is closest to: 0.032 m 0.065 m 0.13 m 0.52 m 0.26 m A laser emits a pulse of light with energy 9500 J. The number of photons in the pulse if the wavelength is 6.25 Times 10^14 Hz is closest to: 1.2 Times 10^22 2.9 Times 10^19 2.3 Times 10^22 5.2 Times 10^22 3.8 Times 10^22