Light travels from material P of refractive index 2.0 to material Q of refractive index 1.6. The speed of light in P is 1.5 x 10^8 m s-1. What is the speed of light in Q?

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

Answerigneous bedrock of the oceanic crust;

Answer///(d) atoms contain small,negatively charged particles;

To find speed, or mph, use distance/time.