ÌâÄ¿ÄÚÈÝ
[ÎïÀí¡ª¡ªÑ¡ÐÞ3¡ª4]£¨15·Ö£©
£¨1£©£¨5·Ö£©ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ ( )
£¨2£©£¨10·Ö£©ÓÉ͸Ã÷½éÖÊÖƳɵĺñ±ÚÈÝÆ÷£¬Æäºá½ØÃæΪԲ»·ÐΣ¬½éÖʵÄÕÛÉäÂÊn
,ÄÚ¾¶r="6" cm£¬Í⾶ÊÇÄÚ¾¶µÄ
±¶£¬ÈçͼËùʾ¡£Ò»Ï¸Êø¹âÑØAB·½ÏòÉäÈËÈÝÆ÷£¬ÈëÉä½Ç
£¬¹âÔÚ¿ÕÆøÖеĴ«²¥ËÙÂÊԼȡ3¡Á108m/s£¬ÇóÕâÊø¹â´ÓÉäÈëµ½µÚÒ»´ÎÉä³ö͸Ã÷½éÖÊËùÓõÄʱ¼ä¡£![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222383536422.jpg)
£¨1£©£¨5·Ö£©ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ ( )
A£®Í¬Ò»µØµãµÄµ¥°Ú°Ú³¤Ô½³¤£¬ÆäÕñ¶¯ÖÜÆÚÔ½³¤ |
B£®Æû³µÃùµÑÏòÎÒÃÇ¿ªÀ´Ê±£¬ÎÒÃǸе½µÑÉùºÜ¼âÈñ£¬ÕâÊDz¨µÄ¹²ÕñÏÖÏó |
C£®¶Ì²¨²»ÈÝÒ×ÈƹýÕÏ°Îï¼ÌÐø´«²¥£¬Òò´Ë¶Ì²¨ÎÞÑÜÉäÏÖÏó |
D£®×ݲ¨¿ÉÒÔÑØˮƽ·½Ïò´«²¥£¬Ò²¿ÉÒÔÑØÊúÖ±·½Ïò´«²¥ |
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238306246.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238322227.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238322286.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222383536422.jpg)
£¨1£©AD
£¨2£©![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238368491.gif)
£¨2£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238368491.gif)
£¨1£©AD£¨5·Ö£©£¨È«Ñ¡¶ÔµÃ5·Ö£¬Ñ¡¶Ôµ«²»È«µÃ3·Ö£¬ÓÐÑ¡´íµÃ0·Ö£©
£¨2£©½â£º´ÓÍâͲ±ÚÈëÉ䣬ÉèÕÛÉä½ÇΪ![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238384698.gif)
¿ÉµÃ£º
£¨2·Ö£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222384626697.jpg)
Éäµ½ÄÚ±Ú½çÃæP´¦£¬ÉèÈëÉä½ÇΪ
ÖУ¬¸ù¾ÝÕýÏÒ¶¨Àí£¬
£¬
Ôò
£¬ £¨2·Ö£©
ÓÉÓÚÁÙ½ç½Ç
£¬
ÔÚÄÚ±Ú½çÃæ´¦»á·¢ÉúÈ«·´É䣬ÔÙ´ÎÉäµ½Íâ±Ú½çÃæ
´¦£¬¸ù¾Ý¶Ô³ÆÐÔ¿ÉÅжϴ˴¦µÄÈëÉä½ÇµÈÓÚ
£¬²»
»á·¢ÉúÈ«·´É䣬¿ÉÒÔ´Ó½éÖÊÖÐÉä³ö¡££¨2·Ö£©
ÓÉÊýѧ¹Øϵ¿ÉµÃ£¬BP=PQ=r=6cm£¬ £¨2·Ö£©
ÔÚ½éÖÊÖеĹâËÙ£¬![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238540374.gif)
Ôò¸Ã¹âÊø´ÓÉäÈëµ½µÚÒ»´ÎÉä³ö¸Ã½éÖÊËùÓõÄʱ¼ä
£¨2·Ö£©
£¨2£©½â£º´ÓÍâͲ±ÚÈëÉ䣬ÉèÕÛÉä½ÇΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238384698.gif)
¿ÉµÃ£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238415306.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222384626697.jpg)
Éäµ½ÄÚ±Ú½çÃæP´¦£¬ÉèÈëÉä½ÇΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238478527.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222384931110.gif)
Ôò
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238509313.gif)
ÓÉÓÚÁÙ½ç½Ç
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238524601.gif)
ÔÚÄÚ±Ú½çÃæ´¦»á·¢ÉúÈ«·´É䣬ÔÙ´ÎÉäµ½Íâ±Ú½çÃæ
´¦£¬¸ù¾Ý¶Ô³ÆÐÔ¿ÉÅжϴ˴¦µÄÈëÉä½ÇµÈÓÚ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238540218.gif)
»á·¢ÉúÈ«·´É䣬¿ÉÒÔ´Ó½éÖÊÖÐÉä³ö¡££¨2·Ö£©
ÓÉÊýѧ¹Øϵ¿ÉµÃ£¬BP=PQ=r=6cm£¬ £¨2·Ö£©
ÔÚ½éÖÊÖеĹâËÙ£¬
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122238540374.gif)
Ôò¸Ã¹âÊø´ÓÉäÈëµ½µÚÒ»´ÎÉä³ö¸Ã½éÖÊËùÓõÄʱ¼ä
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241222385561127.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿