Answer:
laser pointer does not make use of total internal reflection
We know that momentum = mass times velocity
So a. 720 kgm/s
Answer:
We have learned that refraction occurs as light passes across the boundary between two media. Refraction is merely one of several possible boundary behaviors by which a light wave could behave when it encounters a new medium or an obstacle in its path.
Friction produces heat hope this helps
I hope my answer helped u under stand better
