ÌâÄ¿ÄÚÈÝ
ÀûÓÃË«·ì¸ÉÉæ²â¶¨¹âµÄ²¨³¤ÊµÑéÖÐ,Ë«·ì¼ä¾àΪd=0.4 mm,Ë«·ìµ½¹âÆÁ¼äµÄ¾àÀëΪL=0.5 m,ÓÃijÖÖµ¥É«¹âÕÕÉäË«·ìµÃµ½¸ÉÉæÌõÎÆÈçͼËùʾ,·Ö»®°åÔÚͼÖÐA¡¢BλÖÃʱÓα꿨³ß¶ÁÊýÒ²ÈçͼÖÐËù¸ø³öµÄ,Ôò:(1)·Ö»®°åÔÚͼÖÐA¡¢BλÖÃʱÓα꿨³ß¶ÁÊý·Ö±ðΪxA=__________mm,xB=__________ mm,ÏàÁÚÁ½ÌõÎƼä¾à¦¤x=________ mm;
(2)²¨³¤µÄ±í´ïʽ¦Ë=___________ (Óæ¤x¡¢L¡¢d±íʾ),¸Ãµ¥É«¹âµÄ²¨³¤Îª¦Ë=________ m;
(3)Èô¸ÄÓÃƵÂʽϸߵĵ¥É«¹â,µÃµ½µÄ¸ÉÉæÌõÎƼä¾à½«____________ (Ìî¡°±ä´ó¡±¡°²»±ä¡±»ò¡°±äС¡±).
(1)11.1 15.6 0.75 (2)¦Ë=¦¤x 6.0¡Á10-7 (3)±äС
½âÎö:(1)xA=11.1 mm(Óα꿨³ßÎÞ¹À¶Áλ);xB=15.6 mm;¦¤x=0.75 mm.
(2)Óɦ¤x=¡¤¦ËÖª¦Ë=
¦¤x;
´úÈëÊýÖµ¦Ë=6.0¡Á10-7 m.
(3)ÓɦË=,¹ÊƵÂʦÍÔö´ó,²¨³¤¦Ë¼õС,¸ÉÉæÌõÎƼä¾à½«±äС.

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿