ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ä³Í¬Ñ§Æ¯¸¡ÔÚº£ÃæÉÏ£¬ËäȻˮÃ沨ÕýƽÎȵØÒÔ1.8m/sµÄËÙÂÊÏòן£Ì²´«²¥£¬µ«Ëû²¢²»Ïòº£Ì²¿¿½ü£®¸Ãͬѧ·¢ÏÖ´ÓµÚ1¸ö²¨·åµ½µÚ10¸ö²¨·åͨ¹ýÉíϵÄʱ¼ä¼ä¸ôΪ15s£®ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨ £©
A.Ë®Ã沨ÊÇÒ»ÖÖ»úе²¨
B.¸ÃË®Ã沨µÄƵÂÊΪ6Hz
C.¸ÃË®Ã沨µÄ²¨³¤Îª3m
D.Ë®Ã沨ûÓн«¸ÃͬѧÍÆÏò°¶±ß£¬ÊÇÒòΪ²¨´«²¥Ê±ÄÜÁ¿²»»á´«µÝ³öÈ¥
E.Ë®Ã沨ûÓн«¸ÃͬѧÍÆÏò°¶±ß£¬ÊÇÒòΪ²¨´«²¥Ê±Õñ¶¯µÄÖʵ㲢²»Ë沨ǨÒÆ
¡¾´ð°¸¡¿A,C,E
¡¾½âÎö¡¿½â£ºA¡¢Ë®Ã沨ÊÇÓлúеÕñ¶¯Ò»ÆðµÄ£¬ÔÚ½éÖÊ£¨Ë®£©Öд«²¥µÄÒ»ÖÖ²¨£¬ÊÇÒ»ÖÖ»úе²¨£¬Ñ¡ÏîAÕýÈ·£®
B¡¢ÓɵÚ1¸ö²¨·åµ½µÚ10¸ö²¨·åͨ¹ýÉíϵÄʱ¼ä¼ä¸ôΪ15s£¬¿ÉµÃÖªÕñ¶¯µÄÖÜÆÚTΪ£ºT= = = s£¬ÆµÂÊΪ£ºf= =0.6Hz£¬Ñ¡ÏîB´íÎó£®
C¡¢Óɹ«Ê½¦Ë=vT£¬ÓЦË=1.8¡Á =3m£¬Ñ¡ÏîCÕýÈ·£®
DE¡¢²ÎÓëÕñ¶¯µÄÖʵãÖ»ÊÇÔÚ×Ô¼ºµÄƽºâλÖø½½ü×öÍù¸´Ô˶¯£¬²¢²»»á¡°Ë沨ÖðÁ÷¡±£¬µ«Õñ¶¯µÄÄÜÁ¿ºÍÕñ¶¯ÐÎʽȴ»á²»¶ÏµÄÏòÍâ´«²¥£¬ËùÒÔÑ¡ÏîD´íÎó£¬EÕýÈ·£®
¹ÊÑ¡£ºACE
¡¾¿¼µã¾«Îö¡¿¸ù¾ÝÌâÄ¿µÄÒÑÖªÌõ¼þ£¬ÀûÓò¨µÄ¸ÉÉæºÍÑÜÉäºÍ²¨³¤¡¢²¨ËÙºÍƵÂʵĹØϵµÄÏà¹Ø֪ʶ¿ÉÒԵõ½ÎÊÌâµÄ´ð°¸£¬ÐèÒªÕÆÎÕ¸ÉÉæʱ£¬Õñ¶¯¼ÓÇ¿ÇøÓò»òÕñ¶¯¼õÈõÇøÓòµÄ¿Õ¼äλÖÃÊDz»±äµÄ£¬¼ÓÇ¿ÇøÓòÖÐÐÄÖʵãµÄÕñ·ùµÈÓÚÁ½Áв¨µÄÕñ·ùÖ®ºÍ£¬¼õÈõÇøÓòÖÐÐÄÖʵãµÄÕñ·ùµÈÓÚÁ½Áв¨µÄÕñ·ùÖ®²î£»Õñ¶¯ÔÚÒ»¸öÖÜÆÚÀïÔÚ½éÖÊÖд«²¥µÄ¾àÀëµÈÓÚÒ»¸ö²¨³¤£»»úе²¨µÄ´«²¥ËÙÂÊÓɽéÖʾö¶¨£¬Ó벨ԴÎ޹أ»²¨µÄƵÂÊʼÖÕµÈÓÚ²¨Ô´µÄÕñ¶¯ÆµÂÊ£¬Óë½éÖÊÎ޹أ»ÈýÕß¹Øϵ:v=¦Ëf£®