Lesson: Chapter 4 — Waves and their applications
This erases every answer in this set and starts you again at question one. Your score will be gone.
Type these four numbers to confirm:
Those numbers don't match. Look at them again and type them.
In Activity 4.4 more of the hacksaw blade is let stick out. What happens?
The right answer is the one marked above.
The frequency falls and the sound becomes less shrill. A longer vibrating part vibrates more slowly, so it gives a lower pitch.
This browser is not saving your answers, so no total can be shown.
Answer the question to continue.