ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Ò»ÁÐÑØxÖáÕý·½Ïò´«²¥µÄ¼òÆ׺ᲨÔÚt=0ʱ¿ÌµÄ²¨ÐÎÈçͼËùʾ£¬ÖʵãPµÄx×ø±êΪ3m.¡£ÒÑÖªÈÎÒâÕñ¶¯ÖʵãÁ¬Ðø2´Î¾­¹ýƽºâλÖõÄʱ¼ä¼ä¸ôΪ0.4s¡£ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨ÌîÕýÈ·´ð°¸±êºÅ¡£Ñ¡¶Ô1¸öµÃ2·Ö£¬Ñ¡¶Ô2¸öµÃ3·Ö£¬Ñ¡3¸öµÃ4·Ö£»Ã¿Ñ¡´í1¸ö¿Û2·Ö£¬×îµÍµÃ·ÖΪ0·Ö£©¡£

A£®²¨ËÙΪ4m/s

B£®²¨µÄƵÂÊΪ1.25Hz

C£®x×ø±êΪ15mµÄÖʵãÔÚt=0.2sʱǡºÃλÓÚ²¨¹È

D£®xµÄ×ø±êΪ22mµÄÖʵãÔÚt=0.2sʱǡºÃλÓÚ²¨·å

E£®µ±ÖʵãPλÓÚ²¨·åʱ£¬x×ø±êΪ17mµÄÖʵãÇ¡ºÃλÓÚ²¨¹È

¡¾´ð°¸¡¿BDE

¡¾½âÎö¡¿ÈÎÒâÕñ¶¯ÖʵãÁ¬Ðø2´Î¾­¹ýƽºâλÖõÄʱ¼ä¼ä¸ôΪ0.4s£¬Ôò£¬½âµÃ

´ÓͼÏñÖпÉÖª£¬ËùÒÔ¸ù¾Ý¹«Ê½£¬¹ÊA´íÎ󣻸ù¾Ý¹«Ê½¿ÉµÃ²¨µÄƵÂÊΪ1.25Hz£¬BÕýÈ·£»x×ø±êΪ15mµÄÖʵãºÍx×ø±êΪ3mµÄÖʵãÏà¸ô12m£¬Îª²¨³¤µÄÕûÊý±¶£¬¼´Á½ÖʵãΪͬÏàµã£¬¶øx×ø±êΪ3mµÄÖʵ㾭¹ýt=0.2s¼´ËÄ·ÖÖ®Ò»ÖÜÆÚÕñ¶¯µ½Æ½ºâλÖã¬ËùÒÔx×ø±êΪ15mµÄÖʵãÔÚt=0.2sʱÕñ¶¯µ½Æ½ºâλÖã¬C´íÎó£»xµÄ×ø±êΪ22mµÄÖʵãºÍxµÄ×ø±êΪ2mµÄÖʵãΪͬÏàµã£¬xµÄ×ø±êΪ2mµÄÖʵ㾭¹ýt=0.2s¼´ËÄ·ÖÖ®Ò»ÖÜÆÚÇ¡ºÃλÓÚ²¨·å£¬¹ÊxµÄ×ø±êΪ22mµÄÖʵãÔÚt=0.2sʱǡºÃλÓÚ²¨·å£¬DÕýÈ·£»µ±ÖʵãPλÓÚ²¨·åʱ£¬¾­¹ýÁË°ë¸öÖÜÆÚ£¬¶øx×ø±êΪ17mµÄÖʵãºÍx×ø±êΪ1mµÄÖʵãΪͬÏàµã£¬¾­¹ý°ë¸öÖÜÆÚx×ø±êΪ1mµÄÖʵãÇ¡ºÃλÓÚ²¨¹È£¬EÕýÈ·¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø