ÌâÄ¿ÄÚÈÝ

ijͬѧÉè¼ÆÁËÒ»¸öÈçͼËùʾµÄµç·£¬À´²â¶¨µçÔ´µÄµç¶¯ÊƺÍÄÚ×è¼°¶¨Öµµç×èR0µÄ×èÖµ£®ÊµÑéʱËûÓÃU1¡¢U2¡¢I·Ö±ð±íʾµç±íV1¡¢V2¡¢AµÄ¶ÁÊý£¬ÔÚ½«»¬¶¯±ä×èÆ÷µÄ»¬Æ¬Òƶ¯µ½²»Í¬Î»ÖÃʱ£¬¼Ç¼ÁËU1¡¢U2¡¢IһϵÁÐÖµ£¬È»ºóËûÔÚÁ½ÕÅÖ½Éϸ÷×÷ÁËÒ»¸öͼÏßÀ´´¦ÀíʵÑéÊý¾Ý£¬²¢¼ÆËãµçÔ´µç¶¯ÊÆ¡¢ÄÚ×èÒÔ¼°¶¨Öµµç×èR0µÄÖµ£®
¸ù¾ÝÌâÖÐËù¸øÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌ⣺
¢ÙÔÚ×÷ͼÏßʱ£¬ÓÃÀ´¼ÆËãµçÔ´µç¶¯ÊÆ¡¢ÄÚ×èͼÏßµÄ×Ý¡¢ºá×ø±êÖáÓ¦¸Ã·Ö±ð´ú±í
U1
U1
¡¢
I
I
£»ÓÃÀ´¼ÆË㶨ֵµç×èR0ͼÏßµÄ×Ý¡¢ºá×ø±êÖáÓ¦¸Ã·Ö±ð´ú±í
U1-U2
U1-U2
¡¢
I
I
£¨ËùÌîÄÚÈÝÓá°U1¡¢U2¡¢I¡±±íʾ£©£®
¢ÚÈôʵÑéÖеÄËùÓвÙ×÷ºÍÊý¾Ý´¦Àí׼ȷÎÞÎó£¬ÊµÑéÖвâµÃµÄ¶¨Öµµç×èR0Öµ
´óÓÚ
´óÓÚ
ʵ¼ÊÖµ£¨Ñ¡Ìî¡°´óÓÚ¡±¡¢¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©
·ÖÎö£º£¨1£©¼ÆËãµçÔ´µç¶¯ÊƺÍÄÚ×èµÄͼÏßӦΪ·¶ËµçѹU1Óë¸É·µçÁ÷IµÄ¹ØϵͼÏߣ¬¼ÆË㶨ֵµç×èR0µÄͼÏßӦΪR0Á½¶ËµÄµçѹ£¨U1-U2£©ÓëµçÁ÷IµÄ¹ØϵͼÏߣ»
£¨2£©R0Á½¶ËµÄµçѹ£¨U1-U2£©Ã»ÓÐÎó²î£¬µçÁ÷±íʾÊý±ÈR0µÄʵ¼ÊµçÁ÷ƫС£¬ËùÒÔR0µÄ²âÁ¿ÖµÆ«´ó£®
½â´ð£º½â£º¢Ù¼ÆËãµçÔ´µç¶¯ÊƺÍÄÚ×èµÄͼÏßӦΪ·¶ËµçѹU1Óë¸É·µçÁ÷IµÄ¹ØϵͼÏߣ¬×Ý×ø±êµÄ½Ø¾à´ú±íµÄÊǵçÔ´µÄµç¶¯ÊÆ£¬Ö±ÏßµÄбÂÊ´ú±íµÄÊǵçÔ´µÄÄÚ×èµÄ´óС£®
¼ÆË㶨ֵµç×èR0µÄͼÏßӦΪR0Á½¶ËµÄµçѹ£¨U1-U2£©ÓëµçÁ÷IµÄ¹ØϵͼÏߣ»Ö±ÏßµÄбÂÊ´ú±íµÄ¶¨Öµµç×èR0
¢ÚR0Á½¶ËµÄµçѹ£¨U1-U2£©Ã»ÓÐÎó²î£¬µçÁ÷±íʾÊý±ÈR0µÄʵ¼ÊµçÁ÷ƫС£¬¹ÊR0µÄ²âÁ¿ÖµÆ«´ó£®
¹Ê´ð°¸Îª£º¢ÙU1¡¡I£»U1-U2¡¡I£®
¢Ú´óÓÚ
µãÆÀ£º½â¾ö¸ÃÌâ¹Ø¼üÒªÕÆÎղⶨµç¶¯ÊƺÍÄÚµç×èµÄÊý¾Ý´¦ÀíºÍÃ÷È·µç×èµÄ²âÁ¿·½·¨¡¢Ô­ÀíºÍʵÑéÎó²îµÄ´¦Àí£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
£¨2006?¹ã¶«£©Ä³Í¬Ñ§Éè¼ÆÁËÒ»¸öÈçͼËùʾµÄʵÑéµç·£¬ÓÃÒԲⶨµçÔ´µç¶¯ÊƺÍÄÚ×裬ʹÓõÄʵÑéÆ÷²ÄΪ£º´ý²â¸Éµç³Ø×飨µç¶¯ÊÆÔ¼3V£©¡¢µçÁ÷±í£¨Á¿³Ì0.6A£¬ÄÚ×èСÓÚ1¦¸£©¡¢µç×èÏ䣨0¡«99.99¦¸£©¡¢»¬¶¯±ä×èÆ÷£¨0¡«10¦¸£©¡¢µ¥µ¶Ë«ÖÀ¿ª¹Ø¡¢µ¥µ¶µ¥ÖÀ¿ª¹Ø¸÷Ò»¸ö¼°µ¼ÏßÈô¸É£®¿¼Âǵ½¸Éµç³ØµÄÄÚ×è½ÏС£¬µçÁ÷±íµÄÄÚ×è²»ÄܺöÂÔ£®
£¨1£©¸Ãͬѧ°´Í¼7Á¬Ïߣ¬Í¨¹ý¿ØÖÆ¿ª¹Ø״̬£¬²âµÃµçÁ÷±íÄÚ×èԼΪ0.20¦¸£®ÊÔ·ÖÎö¸Ã²âÁ¿²úÉúÎó²îµÄÔ­ÒòÊÇ
²¢Áªµç×èÏäºóÏß·×Ü×èÖµ¼õС£¬´Ó¶øÔì³É×ܵçÁ÷Ôö´ó
²¢Áªµç×èÏäºóÏß·×Ü×èÖµ¼õС£¬´Ó¶øÔì³É×ܵçÁ÷Ôö´ó
£®
£¨2£©¼òҪд³öÀûÓÃͼ7Ëùʾµç·²âÁ¿µçÔ´µç¶¯ÊƺÍÄÚ×èµÄʵÑé²½Ö裺
¢Ù
µ÷½Úµç×èÏä R£¬¶Ï¿ª¿ª¹ØK£¬½«¿ª¹Ø S ½Ó D£¬¼Ç¼µç×èÏäµÄ×èÖµºÍµçÁ÷±íʾÊý£»
µ÷½Úµç×èÏä R£¬¶Ï¿ª¿ª¹ØK£¬½«¿ª¹Ø S ½Ó D£¬¼Ç¼µç×èÏäµÄ×èÖµºÍµçÁ÷±íʾÊý£»
£»
¢Ú
¶Ï¿ª¿ª¹ØD£¬Ôٴε÷½Úµç×èÏä R£¬½«¿ª¹Ø S ½Ó D£¬¼Ç¼µç×èÏäµÄ×èÖµºÍµçÁ÷±íʾÊý
¶Ï¿ª¿ª¹ØD£¬Ôٴε÷½Úµç×èÏä R£¬½«¿ª¹Ø S ½Ó D£¬¼Ç¼µç×èÏäµÄ×èÖµºÍµçÁ÷±íʾÊý
£»
£¨3£©Í¼ÊÇÓÉʵÑéÊý¾Ý»æ³öµÄ
1I
-R
ͼÏó£¬ÓÉ´ËÇó³ö´ý²â¸Éµç³Ø×éµÄµç¶¯ÊÆE=
2.86
2.86
V¡¢ÄÚ×èr=
2.37
2.37
¦¸£®£¨¼ÆËã½á¹û±£ÁôÈýλÓÐЧÊý×Ö£©
ijͬѧÉè¼ÆÁËÒ»¸öÈçͼ1ËùʾµÄʵÑéµç·£¬ÓÃÒԲⶨµçÔ´µç¶¯ÊƺÍÄÚ×裬ʹÓõÄʵÑéÆ÷²ÄΪ£º´ý²â¸Éµç³Ø×飨µç¶¯ÊÆEÔ¼3V£©¡¢µçÁ÷±í£¨Á¿³Ì0.6A£¬ÄÚ×èСÓÚ1¦¸£©¡¢µç×èÏäR £¨ 0¡«99.99¦¸£©¡¢»¬¶¯±ä×èÆ÷£¨0¡«10¦¸£©£®¿ª¹ØK¡¢Ë«ÖÀ¿ª¹ØS ¼°µ¼ÏßÈôǧ£®
¿¼Âǵ½¸Éµç³ØµÄÄÚ×è½ÏС£¬µçÁ÷±íµÄÄÚ×è²»ÄܺöÂÔ£®¸Ãͬѧ°´Í¼Á¬Ïߺ󣬣¨a£©±ÕºÏ¿ª¹ØK£¬¶Ï¿ª¿ª¹ØS£¬µ÷½Ú»¬¶¯±ä×èÆ÷P Ê¹µçÁ÷±í¶ÁÊýΪÂú¿Ì¶ÈÖµI 0£¬´Ëʱ»¬¶¯±ä×èÆ÷½ÓÈëµç·µÄ×èֵΪR1£» £¨b£©±ÕºÏ¿ª¹ØK£¬°Ñ¿ª¹ØSÓëC ½Óͨ£¬µ÷½Úµç×èÏäR Ê¹µçÁ÷±íÖ¸Õë¶ÁÊýΪÂú¿Ì¶ÈÖµµÄÒ»°ëI0/2£¬´ËʱRµÄֵΪR2£®ÔòµçÁ÷±íµÄÄÚ×èRA=
 
£¨ÌîR1»òR2£©£®¸Ã²âÁ¿ÖµÓëµçÁ÷±íÄÚ×èµÄÕæʵֵ£¨ÓÃRg ±íʾ£©±È½Ï£¬ÔòÓÐR A
 
Rg £¨Ìî´óÓÚ¡¢µÈÓÚ»òСÓÚ£©£®
ΪʹµçÔ´µç¶¯ÊƺÍÄÚ×è²âÁ¿µÄ¸ü¼Ó׼ȷ£¬¸Ãͬѧ°´Í¼Á¬Ïߺ󣬶Ͽª¿ª¹ØK£¬°Ñ¿ª¹ØS ÓëD ½Óͨ£¬¶à´Î¸Ä±äµç×èÏäµÄ×èÖµR£¬¶Á³öµçÁ÷±íµÄÏàӦʾÊýI£¬ÒÔ
l
I
Ϊ×Ý×ø±ê£¬RΪºá×ø±ê£¬ÓÉʵÑéÊý¾Ý»æ³ö
l
I
Ò»R Í¼Ïó£¬Èçͼ2Ëùʾ£¬¸ÃͼÏßΪһÌõÖ±Ïߣ®ÓÉͼÏ߿ɵõ½Ö±ÏßÔÚ×ÝÖáÉϵĽؾàΪm£¬Ö±ÏßµÄбÂÊΪk£¬µçÁ÷±íµÄÄÚ×èΪRA£¬ÓÉ´Ë¿ÉÇó³ö´ý²â¸Éµç³Ø×éµÄµç¶¯ÊÆE=
 
¡¢ÄÚ×èr=
 
£®
¾«Ó¢¼Ò½ÌÍø
ÔÚÑо¿µç´Å¸ÐÓ¦ÏÖÏóµÄ¹ý³ÌÖУ¬Ä³Í¬Ñ§Éè¼ÆÁËÒ»¸öÈçͼ1ËùʾµÄʵÑé×°Öã®ABCDΪһ¸öÓҶ˿ª¿ÚµÄUÐÍˮƽµ¼¹ì£¬ËüËùÔÚ¿Õ¼äÓд¹Ö±ÓÚµ¼¹ìƽÃæÏòÉϵÄÔÈÇ¿´Å³¡£®µ¼Ìå°ôADºÍBC¶Îµ¼¹ìÊÇÓеç×èµÄ£¬ÆäËü²¿·Öµç×è²»¼Æ£®ÆäÖÐBC¶Îµç×èR0=5¦¸£®ÏÖÏÈÈõ¼Ìå°ôADÔÚÍâÁ¦×÷ÓÃÏÂÑص¼¹ìÓɾ²Ö¹¿ªÊ¼×öÔȼÓËÙÖ±ÏßÔ˶¯£¬µ±µ¼Ìå°ôËٶȴﵽijһֵʱ£¬Í¨¹ýµ÷ÕûÍâÁ¦Ê¹µ¼Ìå°ôÁ¢¼´×ö¸ÃËÙ¶ÈϵÄÔÈËÙÖ±ÏßÔ˶¯£®ÈôÒÑÖªµ¼Ìå°ôµÄ³¤¶ÈL=1m£¬´Å³¡µÄ´Å¸ÐӦǿ¶ÈB0=0.6T£®
£¨1£©ÏÖÒªÓõçѹ±í²âÁ¿ADÁ½¶ËµÄµçѹֵ£¬ÐèÒª½«Ò»¸öÁ¿³ÌΪ3V£¬ÄÚ×èֵΪ5k¦¸µÄµçѹ±íVµÄÁ¿³ÌÀ©´óΪ6V£¬ÐèÒªÔÚÏÂÃæ¸ø³öµÄµç×èÏäÖÐÑ¡ÔñÒ»¸öÓëµçѹ±íV´®Áª£¬ÄãÈÏΪӦѡÔñ
 
£®£¨ÇëÌîдѡÏî×Öĸ£©
A¡¢µç×èÏ䣨×èÖµ·¶Î§0-99¦¸£©
B¡¢µç×èÏ䣨×èÖµ·¶Î§0-999¦¸£©
C¡¢µç×èÏ䣨×èÖµ·¶Î§0-9999¦¸£©
£¨2£©µ±µ¼Ìå°ôµÄ¼ÓËÙ¶Èa=1m/s2ʱ£¬ÊµÑéÕßͨ¹ý´«¸ÐÆ÷²É¼¯µ½µÄµçѹUºÍʱ¼ätµÄ¶à×éÊý¾Ý£¬ÀûÓüÆËã»ú»æÖƳöµÄU-tµÄ¹ØϵͼÏóÈçͼ2Ëùʾ£¬Ôò¿ÉÄÜÇó³öµ¼Ìå°ôADµÄ×èֵΪ
 
¦¸£®¾«Ó¢¼Ò½ÌÍø
£¨3£©ÊµÑéÕ߸ıä´Å¸ÐӦǿ¶ÈBµÄ´óС£¬Öظ´ÉÏÊöʵÑé²Ù×÷£®¼Ç¼µ¼Ìå°ôÔÈËÙÔ˶¯Ê±µçѹ±íʾÊýUey´Å¸ÐӦǿ¶ÈBµÄ¶à×éÊý¾Ý£¬²¢×ö³öU-B¹ØϵͼÏóÈçͼ3Ëùʾ£®ÔòÔڴŸÐÇ¿¶ÈÔö´óµÄ¹ý³ÌÖе¼Ìå°ô×îÖÕËٶȱ仯Çé¿öΪ
 
£®£¨Ìî¡°±ä´ó¡±¡¢¡°±äС¡±»ò¡°²»±ä¡±£©

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø