What is not an example of reflection

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

In the first law of thermodynamics, triangle e=q-w, what does q stand for