A student is 75 m away from a wall and creates a brief, loud sound by knocking two pieces of wood together. What is the approximate interval between producing the sound and the student hearing the echo that is returned?
- A0.2 s
- B0.5 s
- C2 s
- D5 s
Physics 0625 · IGCSE · Sound
A student is 75 m away from a wall and creates a brief, loud sound by knocking two pieces of wood together. What is the approximate interval between producing the sound and the student hearing the echo that is returned?