| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| relativistic doppler effect equation | 0.72 | 0.9 | 1931 | 70 | 36 |
| relativistic | 1.38 | 0.2 | 8854 | 52 | 12 |
| doppler | 1.79 | 0.5 | 6592 | 60 | 7 |
| effect | 0.66 | 0.5 | 6701 | 54 | 6 |
| equation | 1.01 | 0.2 | 584 | 66 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| relativistic doppler effect equation | 1.91 | 0.3 | 8402 | 19 |
