Lasers can now be designed to emit pulses of light smaller than 30 microns wide in their direction of motion. (a) estimate the uncertainty in the momentum ofa photon in such a pulse. (b) the momcntum ofa photon is p = ii ia. estimate the uncertainty in the wavelength ofa photon in the pulse, assuming a nominal wavelength of800 nl11.

Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s