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例1如图1所示,将一把钢尺紧按在桌面上,一端伸出桌边,拨动钢尺,听它振动发出的声音.改变钢尺伸出桌边的长度,再次用力拨动,使钢尺两次振动的幅度大致相同,听它发出声音的变化.这个实验用来探究().A.声音能否在固体中传播B.响度与物体振幅的关系C.音调与物体振动频率的关系D.音色与发声体的哪些因素有关
Example 1 As shown in Figure 1, a steel ruler pressed on the desktop, one end out of the table, dial the ruler, listen to the vibration of its sound.Change the length of the ruler out of the table, once again forced dial Move, so that the amplitude of the steel ruler two vibrations roughly the same, listen to it make a sound change.This experiment is to explore () A. The sound can be transmitted in solid B. The relationship between loudness and object amplitude C. Pitch and object The relationship between the frequency of vibration D. Tone and sound body which factors