Glass rods in air or water A cylindrical glass rod with a hemispherical of radius R=2.00cm end has an index of
refraction 1.52. The rod is surrounded by air. Find the image distance if the object is
8cm from the rod in air. What is the lateral magnification?

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