Lesson 4.7 - Sound
VIDEO LESSON (18:40 min)
Video is not accessible in some countries. If you cannot view it, you might need VPN to do so.SPEED OF SOUND
LIGHTNING
EXAMPLE
Determine the speed of sound outside today
SPEED OF SOUND IN OTHER MATERIALS
INTENSITY OF SOUND
EXAMPLE
最后修改: 2026年04月11日 星期六 20:58