If a swimmer is traveling at a constant speed of 0.85 m/s how long would it take to swim the length of 50 meter olymic sized pool

What is the role of the ocular lens?

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

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.