Pierakstīties
JAMB - Physics (1993 - No. 16)
Which of the following waves can propagate through a vacuum?
High velocity sound waves
Ultrasonic waves
Acoustic waves
Infra-red waves
komentāri (0)
Piesakieties, lai komentētu
Reklāma
Ļaujiet javascript pareizi ielādēt šo lapu