Log Masuk
Physics for IGCSE & O level - Waves And Sounds (Section 7 - No. 23)
Which of these items can be detected by the use of ultrasound?
Flaws in metal
Depth of water
The size of a foetus
Air pressure
Penjelasan
All of the above are detectable
Komen (0)
Log Masuk Untuk Mengulas
Iklan
Benarkan javascript memuatkan halaman ini dengan betul