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

설명

All of the above are detectable

댓글 (0)

광고

자바스크립트가 이 페이지를 올바르게 로드하도록 허용