Calculating Light Travel Time Through Different Materials

[BuBbLeS01]

[SOLVED] Simple speed of light problem

Homework Statement

How long does it take light to travel trough a 5.23-mm-thick piece of window glass?

Trough what thickness of water could light travel in the same amount of time?

Homework Equations

The Attempt at a Solution

I thought I could just do the speed of light divided by the thickness to get my seconds but that's not right so can someone please help me?

 

[BuBbLeS01]

nevermind...got it