1.which of the following is a layer of the atmosphere select one: a. biosphere b. planosphere c. weathersphere d. stratosphere 2.which layer of the atmosphere contains the ozone layer? select one: a. troposphere b. stratosphere c. mesosphere d. thermosphere

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

The two required components for a generator

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up