<span><span>C. People who work hard are superior to those who are lazy.</span><span> </span></span>
B Light waves travel faster than sound waves
Answer:
In waves distance is measured by wave length and time is measured by frequency or period.
velocity ratio=wave length multiply by frequency.
HENCE, if the same wave travels for 2 econds its frequency will be 2Hz.
Explanation:
1. False
2.False
3.False
4.True
5. True
6. False
7.True
8.False
9. True
10. False