ÌâÄ¿ÄÚÈÝ
ÈçͼËùʾ£¬Ë®Æ½UÐι⻬µ¼¹ì£¬¿í¶ÈΪL=1m£¬µ¼¹ìµç×èºöÂÔ²»¼Æ£¬ab¸ËµÄµç×è r=0.1¦¸£¬¶¨Öµµç×èR=" 0." 3¦¸¡£ÔÈÇ¿´Å³¡µÄ´Å¸ÐӦǿ¶ÈB=0.5T£¬·½Ïò´¹Ö±µ¼¹ìÏòÉÏ£¬ÏÖÓÃÁ¦FÀ¶¯ab¸ËÓɾ²Ö¹¿ªÊ¼ÏòÓÒ¼ÓËÙÇ°½ø2mʱǡÒÔ2m/sµÄËÙ¶È×÷ÔÈËÙÔ˶¯¡£Çó´Ëʱ£º
£¨1£©a¡¢b¼äµÄµçÊÆ²î £»
£¨2£©ab¸ËËùÊܵݲÅàÁ¦´óСºÍ·½
Ïò£»
£¨3£©ab¸Ë¼ÓËÙ¹ý³ÌÖÐͨ¹ýab¸ËµÄµçÁ¿q¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241234467654046.jpg)
£¨1£©a¡¢b¼äµÄµçÊÆ²î £»
£¨2£©ab¸ËËùÊܵݲÅàÁ¦´óСºÍ·½
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412344673472.gif)
£¨3£©ab¸Ë¼ÓËÙ¹ý³ÌÖÐͨ¹ýab¸ËµÄµçÁ¿q¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241234467654046.jpg)
£¨1£©µç¶¯ÊÆ
V£»£¨1·Ö£©
µç·ÖеçÁ÷
A£»£¨1·Ö£©
a¡¢b¼äµÄµçÊƲî
V £¨2·Ö£©
£¨2£©ab¸ËËùÊܵݲÅàÁ¦
N¡££¨2·Ö£©
·½ÏòˮƽÏò×ó¡££¨1·Ö£©
£¨3£©Í¨¹ýab¸ËµÄµçÁ¿
£¨2·Ö£©
C £¨1·Ö£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446781589.gif)
µç·ÖеçÁ÷
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446796636.gif)
a¡¢b¼äµÄµçÊƲî
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446796470.gif)
£¨2£©ab¸ËËùÊܵݲÅàÁ¦
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446812651.gif)
·½ÏòˮƽÏò×ó¡££¨1·Ö£©
£¨3£©Í¨¹ýab¸ËµÄµçÁ¿
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446827493.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123446843637.gif)
ÂÔ
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿