The speed of light is 3.00 × 108 m/s in the vacuum of space. in a medium with what index of refraction would light travel slowest? n = 1.00 n = 1.20 n = 1.50 n = 1.62

Index of refraction can be calculated using the following formula:

where in a vacuum and "n" is the index of refraction.  So we must calculate our velocity by manipulating the index of refraction formula and isolate v and so:

We could go one by one and calculate the velocity or use logic.  If you divide by a larger number the output will be a smaller number.  Therefore, the answer would be n=1.62 is the slowest.

By that logic when n=1 light would travel the fastest of these four scenarios.  The key thing to understand about these problems is that the speed of light slows down as it goes through a medium, in a vacuum it's 3 x 10^ 8 m/s but as it goes through say air or water light slows down.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it