stela

if the speed of light in air is3.0 by 10 to the 8 power per second calculate speed of light in a glass box

please help me with this...a box with a square base and an open top must have a volume of 32,000 cm^3. find the dimesinions for the box that minimize the amount of material used.

a point source is on the bottom of a pool 2m deep. find the diameter of the largest circle at the surface which light can emerge from the water (n=1.33)

Good; gi rjjxj jejsjgtd