ÌâÄ¿ÄÚÈÝ

Ò»ÁÐÕñ·ùΪ5 cmµÄ¼òгºá²¨ÑØͼÖÐxÖá´«²¥£¬ÖʵãP£¬QµÄƽºâλÖÃÊÇxÖáÉÏÏà¾à0.6 mµÄÁ½µã£¬t=0ʱ¿ÌPÖʵãÕýͨ¹ýƽºâλÖÃÏòÉÏÔ˶¯£¬QÖʵã¸ÕºÃ´ïµ½×î´óÕýλÒÆ´¦£¬Èô²¨µÄ´«²¥ËÙ¶ÈΪ120 m/s£¬ÇÒ²¨³¤¦Ë´óÓÚ0.5 m£¬Ôò
[     ]
A£®´Ë²¨µÄ²¨³¤¿ÉÄÜÊÇ2.4 m
B£®´Ë²¨µÄƵÂÊÒ»¶¨Îª150 Hz
C£®QµãÓÒ²à¾àQµãˮƽ¾àÀëСÓÚµÄRµã£¬´ËºóµÚÒ»´Îµ½´ï×îµÍµã¾­¹ýµÄ·³ÌÒ»¶¨Ð¡ÓÚ15 cm
D£®¾­¹ýʱ¼ä¡÷t=0.015 s£¬Pµã¿ÉÄܵ½´ï×î´óÕýλÒÆ´¦
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø