ÌâÄ¿ÄÚÈÝ
£¨10·Ö£©ÈçͼËùʾΪ½»Á÷·¢µç»úʾÒâͼ£¬ÔÑÊýΪ
ÔѵľØÐÎÏßȦ£¬±ß³¤·Ö±ðΪl0cmºÍ20cm£¬ÄÚ×èΪ5
£¬ÔڴŸÐÇ¿¶ÈB=0.5TµÄÔÈÇ¿´Å³¡ÖÐÈÆ
ÖáÒÔ
µÄ½ÇËÙ¶ÈÔÈËÙת¶¯£¬ÏßȦºÍÍⲿ20
µç×èRÏà½Ó£¬Çó£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241427272716957.jpg)
£¨1£©S¶Ï¿ªÊ±£¬µçѹ±íʾÊý£»
£¨2£©S±ÕºÏʱ£¬µçÁ÷±íʾÊý£»
£¨3£©·¢µç»úÕý³£¹¤×÷ʱ£¬Í¨¹ýµç×èRµÄµçÁ÷×î´óÖµÊǶàÉÙ£¿RÉÏËùÏûºÄµÄµç¹¦ÂÊÊǶàÉÙ£¿
£¨4£©ÏßȦ´ÓͼʾλÖÃת¹ý90¡ãµÄ¹ý³ÌÖУ¬Í¨¹ýµç×èRµÄµçÁ¿Îª¶àÉÙ£¿
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142726647449.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142726678333.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142726740353.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142726787746.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142726678333.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241427272716957.jpg)
£¨1£©S¶Ï¿ªÊ±£¬µçѹ±íʾÊý£»
£¨2£©S±ÕºÏʱ£¬µçÁ÷±íʾÊý£»
£¨3£©·¢µç»úÕý³£¹¤×÷ʱ£¬Í¨¹ýµç×èRµÄµçÁ÷×î´óÖµÊǶàÉÙ£¿RÉÏËùÏûºÄµÄµç¹¦ÂÊÊǶàÉÙ£¿
£¨4£©ÏßȦ´ÓͼʾλÖÃת¹ý90¡ãµÄ¹ý³ÌÖУ¬Í¨¹ýµç×èRµÄµçÁ¿Îª¶àÉÙ£¿
£¨1£©
£¨2£©2A £¨3£©80W£¨4£©![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241427276611061.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142727302852.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241427276611061.png)
£¨1£©½»Á÷·¢µç»ú²úÉúµç¶¯ÊƵÄ×î´óÖµ
£¨1·Ö£©
S¶Ï¿ªÊ±£¬µçѹ±íʾÊýΪµç¶¯ÊƵÄÓÐЧֵ
£¨2·Ö£©
£¨2£©S±ÕºÏʱ£¬µçÁ÷±íʾÊýΪ¸É·µçÁ÷µÄÓÐЧֵ
2A £¨2·Ö£©
£¨3£©µçÁ÷µÄ×î´óÖµ
A £¨1·Ö£©
µç×èRÉÏÏûºÄµÄµç¹¦ÂÊ
W £¨1·Ö£©
£¨4£©![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728254767.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728394627.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728456551.png)
½âµÃ£º
C £¨3·Ö£©
±¾Ì⿼²é½»±äµçÁ÷µÄ²úÉúºÍÓÐЧֵƽ¾ùÖµµÄ¸ÅÄÓɹ«Ê½E=nBSwÇóµÃµç¶¯ÊÆ·åÖµ£¬ÓÉ·åÖµºÍÓÐЧֵµÄ¹ØϵÇóµÃµçÁ÷ÓÐЧֵ£¬Í¨¹ýµ¼ÏߵĵçÁ¿Óëƽ¾ùÖµÓйأ¬¸ù¾Ý·¨ÀµÚµç´Å¸ÐÓ¦¶¨ÂÉ¿ÉÇóµÃµçÁ¿±í´ïʽ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142727739993.png)
S¶Ï¿ªÊ±£¬µçѹ±íʾÊýΪµç¶¯ÊƵÄÓÐЧֵ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142727302852.png)
£¨2£©S±ÕºÏʱ£¬µçÁ÷±íʾÊýΪ¸É·µçÁ÷µÄÓÐЧֵ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142727942620.png)
£¨3£©µçÁ÷µÄ×î´óÖµ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728004559.png)
µç×èRÉÏÏûºÄµÄµç¹¦ÂÊ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728098614.png)
£¨4£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728254767.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728394627.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824142728456551.png)
½âµÃ£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241427276611061.png)
±¾Ì⿼²é½»±äµçÁ÷µÄ²úÉúºÍÓÐЧֵƽ¾ùÖµµÄ¸ÅÄÓɹ«Ê½E=nBSwÇóµÃµç¶¯ÊÆ·åÖµ£¬ÓÉ·åÖµºÍÓÐЧֵµÄ¹ØϵÇóµÃµçÁ÷ÓÐЧֵ£¬Í¨¹ýµ¼ÏߵĵçÁ¿Óëƽ¾ùÖµÓйأ¬¸ù¾Ý·¨ÀµÚµç´Å¸ÐÓ¦¶¨ÂÉ¿ÉÇóµÃµçÁ¿±í´ïʽ
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿