£¨2012?Âí°°É½Ä£Ä⣩ÈçͼËùʾ£¬±ß³¤L=0.2mµÄÕý·½ÐÎÏßȦabcd£¬ÆäÔÑÊýn=lO£¬×ܵç×èr=2¦¸£¬Íâµç·µÄµç×èR=8¦¸£¬ab±ßµÄÖеãºÍcd±ßµÄÖеãµÄÁ¬Ïß00¡äÇ¡ºÃλÓÚÔÈÇ¿´Å³¡µÄ±ß½çÏßÉÏ£¬´Å³¡µÄ´Å¸ÐӦǿ¶ÈB=1T£¬ÈôÏßȦ´ÓͼʾλÖÿªÊ¼¼Æʱ£¬ÒÔ½ÇËٶȦØ=2rad/sÈÆ00¡äÖáÔÈËÙת¶¯£®ÔòÒÔÏÂÅжÏÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
·ÖÎö£ºÏß¿òÔÚÔÈÇ¿´Å³¡ÖÐÔÈËÙת¶¯£¬²úÉúÕýÏÒʽ½»±äµçÁ÷£¬¸ù¾Ý¹æÂÉ¿ÉÁгö¸ÐÓ¦µç¶¯ÊƵÄ˲ʱ±í´ïʽ£¬×î´óÖµÓëÓÐЧֵµÄ
2
±¶£»Ã¿µ±Ïß¿òͨ¹ýÖÐÐÔÃæʱ£¬µçÁ÷·½Ïò¸Ä±ä£»µ±´ÅͨÁ¿ÎªÁãʱ£¬Ïß¿òÇиîËÙ¶È×î´ó£¬²úÉúµÄµç¶¯ÊÆÒ²×î´ó£®
½â´ð£º½â£ºA¡¢T=
2¦Ð
¦Ø
=
2¦Ð
2
S
=¦ÐS£¬ÔÚt=
¦Ð
4
s
ʱ¿Ì£¬ÏßȦ´ÓͼʾλÖÃת¹ý90¡ã£¬´Ëʱ´Å³¡´©¹ýÏßȦµÄ´ÅͨÁ¿×îС£¬¹ÊA´íÎó£»
B¡¢±ÕºÏµç·ÖиÐÓ¦µç¶¯ÊƵÄ˲ʱ±í´ïʽe=Emsin¦Øt£¬¶øEm=nBS¦Ø£¬ËùÒÔe=nBL2¦Øsin¦Øt=0.4sin2t£®¹ÊB´íÎó£»
C¡¢ÓɵçÁ¿µÄ¹«Ê½I=
q
t
£¬µÃq=N
¡÷?
R+r
=10¡Á
1¡Á0£®22¡Á
1
2
8+2
C
=0.02C£¬¹ÊCÕýÈ·£»
D¡¢´Ót=Oʱµ½t=
¦Ð
4
s
ʱ¿Ì£¬µç×èRÉϲúÉúµÄÈÈÁ¿ÎªQ=I2Rt=(
2
2
EM
R+r
)2R¡Á
¦Ð
4
=1.6¦Ð¡Á10-4J£¬¹ÊD´íÎó£»
¹ÊÑ¡£ºC
µãÆÀ£ºÏß¿òÔÚÔÈÇ¿´Å³¡ÖÐÔÈËÙת¶¯£¬²úÉúÕýÏÒʽ½»±äµçÁ÷£®¶ø¶ÔÓÚµç±í¶ÁÊý¡¢Çó²úÉúµÄÈÈÁ¿¾ùÓɽ»±äµçµÄÓÐЧֵÀ´È·¶¨£¬¶øÉæ¼°µ½ÄÍѹֵʱ£¬ÔòÓÉ×î´óÖµÀ´È·¶¨£®¶øͨ¹ýijһµçÁ¿Ê±£¬ÔòÓÃƽ¾ùÖµÀ´Çó£®Í¬Ê±×¢Òâ´Å³¡Ö»ÓÐÒ»°ë£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2013?Âí°°É½Ò»Ä££©ÎÒ¹ú¡°òÔÁúºÅ¡±ÉîDZÆ÷¾­¹ý¶à´ÎÊÔÑ飬ÖÕÓÚÔÚ2012Äê6ÔÂ24ÈÕÒÔ7020mÉî¶È´´ÏÂÊÀ½ç×îмͼ£¨¹úÍâ×îÉî²»³¬¹ý6500m£©£¬Ô¤Ê¾×Å¿ÉÒÔÕ÷·þÈ«Çò99.8%µÄº£µ×ÊÀ½ç£®¼ÙÉèÔÚij´ÎʵÑéʱ£¬´ÓË®Ã濪ʼÏÂDZµ½×îºó·µ»ØË®Ãæ¹²Àúʱ10min£¬ÉîDZÆ÷ÄÚµÄÏÔʾÆÁÉÏÏÔʾµÄÉî¶ÈºÍËÙ¶ÈËæʱ¼ä±ä»¯µÄͼÏß·Ö±ðÈçͼ£¨a£©¡¢£¨b£©Ëùʾ£®Ôò£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸