Which of the following is not true about mechanical waves? a they carry energy b they transfer matter c they can be longitudinal d they require a medium

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

What can you increase the strength of an electromagnet by

Compare the patterns of the two waves shown in the image. which statement is true about these waves?