Question

multiple - answer 9 points
choose all correct statements.
all waves travel at the speed of light
all waves travel at the same speed
all waves travel at 3x10^8 meters per second

Explanation:

Not all waves travel at the speed of light (which is approximately $3\times 10^{8}$ meters per second in a vacuum). Different types of waves, like sound waves, travel at much slower speeds and at different speeds in different media. Also, different electromagnetic - like radio waves, microwaves etc. travel at the speed of light in a vacuum, but mechanical waves such as water waves and sound waves have their own characteristic speeds depending on the medium. So, none of the given statements are correct.

Answer:

None of the above.