Consisting of identical generator and identical lamps Which circuit lamp can give light?

(The generators' internal resistances are negligible.)

Which of the following represents an upside-down image?

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

If steel is more dense that lake water, why can a boat float