# Problem: a. How long (in ns) does it take light to travel 1.0 m in vacuum?b. What distance does light travel in water, glass, cubiczirconia during the time it travels in 1.0 m vacuum?

###### FREE Expert Solution

Speed of light in medium:

$\overline{){\mathbf{v}}{\mathbf{=}}\frac{\mathbf{c}}{\mathbf{\eta }}}$

Distance, speed, and time relation:

(a)

t = d/c = (1.0)/(3.0 × 108 m/s) = 3.33 × 10-9 s(1ns/10-9s) = 3.33 ns

###### Problem Details

a. How long (in ns) does it take light to travel 1.0 m in vacuum?

b. What distance does light travel in water, glass, cubiczirconia during the time it travels in 1.0 m vacuum?