A researcher investigates sound waves travelling through carbon dioxide in a long tube.
The table shows measurements for the sound wave.
| measurement | result |
|---|---|
| complete oscillations recorded by a pressure sensor | 20 |
| recording time | 0.050 s |
| positions of four successive compression centres | 15 cm, 80 cm, 145 cm, 210 cm |
What is the speed of the sound wave?
2.6×102 m/s2.6\times10^2\ \mathrm{m/s}2.6×102 m/s
1.6×10−3 m/s1.6\times10^{-3}\ \mathrm{m/s}1.6×10−3 m/s
2.6×104 m/s2.6\times10^4\ \mathrm{m/s}2.6×104 m/s
6.2×102 m/s6.2\times10^2\ \mathrm{m/s}6.2×102 m/s