ijͬѧÁ·Ï°Ê¹ÓöàÓñí²âµç×裬µ±Ñ¡ÔñÅ·Ä·µµ¡Á10µµÁ¿³Ì²âijһµç×èʱ£¬Ò»ÇвÙ×÷ºÏÀí£¬µ«Ö¸ÕëƫתȴºÜ´ó£¬Ó¦¸Ä»»Å·Ä·µµµÄÐÂÁ¿³ÌΪ
¡Á1
¡Á1
µµ£¬»»ÓÃÐÂÁ¿³ÌºóÐèÒªÊ×ÏÈ
Å·Ä·µ÷Áã
Å·Ä·µ÷Áã
£¬ÔÚ²âÁ¿Ê±£¬´ý²âµç×èÒªÓë±ðµÄÔª¼þºÍµçÔ´¶Ï¿ª£¬²¢×¢Òâ²»ÒªÓÃÊÖ½Ó´¥±í±ÊµÄ½ðÊô¸Ë£¬ÈôÁ½ÊÖ·Ö±ðͬʱ½Ó´¥Á½½ðÊô¸Ë£¬Ôò²âÁ¿Öµ±ÈÕæÖµÒª
С
С
£¨Ñ¡Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£®²âÁ¿ºó£¬Îª·À±íÍ·ÄÚµç³Ø©µç£¬Ó¦½«Ñ¡Ôñ¿ª¹ØÐýµ½
½»Á÷µçѹ
½»Á÷µçѹ
µµµÄ×î´óÁ¿³Ì´¦»ò
OFF
OFF
´¦£¬ÒÔ±£»¤µç±í£®ÈôËûʹѡÔñ¿ª¹ØÖ¸ÔÚ¡°¡Á100¡±Å·Ä·µµ£¬²¢ÕýÈ·²Ù×÷ºó£¬Ö¸ÕëָʾλÖÃÈçͼËùʾ£¬Ôò´Ëµç×èµÄ×èÖµÊÇ
1200¦¸
1200¦¸
£®
·ÖÎö£ºÖ¸ÕëÆ«½Ç´ó£¬ÔòʾÊýС£¬¹ÊËùÑ¡Á¿³ÌÌ«´ó£¬Òª»»Ð¡Á¿³ÌµÄ£®»»µµºóÒªµç·±ä»¯ÁËÒªÖØнøÐÐÅ·Ä·µ÷Á㣮ÔÙ²âÁ¿¶ÁÊý£®
½â´ð£º½â£ºÆ«½ÇÌ«´ó£¬ÔòʾÊýС£¬ËùÑ¡Á¿³Ì´ó£¬Òª»»Ð¡Á¿³ÌµÄΪ¡Á1µµ£¬»»ÓÃÐÂÁ¿³ÌºóÐèÒªÊ×ÏÈÅ·Ä·µ÷Á㣮
ÒòΪÁ½ÊÖͬʱ·Ö±ð½Ó´¥Á½±Ê¸Ë£¬¾ÍÏ൱ÓÚ¸ø±»²âµ¼Ìå²¢ÁªÁËÒ»¸öµç×裬¸ù¾Ýµç×è²¢ÁªµÄÌصã---µç×è²¢ÁªÊ±£¬×ܵç×è±ÈÈκÎÒ»¸ö·Öµç×èµÄ×èÖµ¶¼ÒªÐ¡£¬¿ÉÒԵóö²âÁ¿Öµ±ÈÕæʵֵҪƫСµÄ£®
²âÁ¿ºó£¬Îª·À±íÍ·ÄÚµç³Ø©µç£¬Ó¦½«Ñ¡Ôñ¿ª¹ØÐýµ½½»Á÷µçѹµµµÄ×î´óÁ¿³Ì´¦»òOFF´¦£¬ÒÔ±£»¤µç±í£®
ÈôËûʹѡÔñ¿ª¹ØÖ¸ÔÚ¡°¡Á100¡±Å·Ä·µµ£¬²¢ÕýÈ·²Ù×÷ºó£¬Ö¸ÕëָʾλÖÃÈçͼËùʾ£¬Ôò´Ëµç×èµÄ×èÖµÊÇ12.0¡Á100=1200¦¸
¹Ê´ð°¸Îª£º¡Á1£¬Å·Ä·µ÷Á㣬С£¬½»Á÷µçѹ£¬OFF£¬1200
µãÆÀ£º¿¼²é¶àÓñíµÄÄÚ²¿µç·ԭÀí£¬Å·Ä·±í²âµç×è¶ÁÊýµÈÓÚ±íÅ̶ÁÊý³ËÒÔ±¶ÂÊ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2013?ÄÏ¿ªÇø¶þÄ££©£¨1£©Èçͼ1Ϊ¡°µçÁ÷Ììƽ¡±£¬¿ÉÓÃÓڲⶨ´Å¸ÐӦǿ¶È£®ÔÚÌìƽµÄÓҶ˹ÒÓÐÒ»¾ØÐÎÏßȦ£¬ÉèÆäÔÑÊýn=5ÔÑ£¬µ×±ßcd³¤L=20cm£¬·ÅÔÚ´¹Ö±ÓÚÖ½ÃæÏòÀïµÄ´ý²âÔÈÇ¿´Å³¡ÖУ¬ÇÒÏßȦƽÃæÓë´Å³¡´¹Ö±£®µ±ÏßȦÖÐͨÈëÈçͼ·½ÏòµÄµçÁ÷I=100mAʱ£ºµ÷½ÚíÀÂëʹÌìƽƽºâ£®Èô±£³ÖµçÁ÷´óС²»±ä£»Ê¹µçÁ÷·½Ïò·´Ïò£¬ÔòÒªÔÚÌìƽÓÒÅ̼ÓÖÊÁ¿m=8.2gµÄíÀÂ룬²ÅÄÜʹÌìƽÔÙ´Îƽºâ£®Ôòcd±ßËùÊܵݲÅàÁ¦´óСΪ
4.1¡Á10-2
4.1¡Á10-2
N£¬´Å³¡µÄ´Å¸ÐӦǿ¶ÈBµÄ´óСΪ
0.41
0.41
T£®£¨g=10m/s2£©

£¨2£©Ä³Í¬Ñ§Éè¼ÆÁËÈçͼ2ËùʾµÄ×°ÖÃÀ´Ì½¾¿¼ÓËÙ¶ÈÓëÁ¦µÄ¹Øϵ£®µ¯»É³Ó¹Ì¶¨ÔÚÒ»ºÏÊʵÄľ°åÉÏ£¬×ÀÃæµÄÓÒ±ßÔµ¹Ì¶¨Ò»Ö§±íÃæ¹â»¬µÄǦ±ÊÒÔ´úÌ涨»¬ÂÖ£¬Ï¸ÉþµÄÁ½¶Ë·Ö±ðÓ뵯»É³ÓµÄ¹Ò¹³ºÍ¿óȪˮƿÁ¬½Ó£®ÔÚ×ÀÃæÉÏ»­³öÁ½ÌõƽÐÐÏßMN¡¢PQ£¬²¢²â³ö¼ä¾àd£®¿ªÊ¼Ê±½«Ä¾°åÖÃÓÚMN´¦£¬ÏÖ»ºÂýÏòÆ¿ÖмÓË®£¬Ö±µ½Ä¾°å¸Õ¸Õ¿ªÊ¼Ô˶¯ÎªÖ¹£¬¼Çϵ¯»É³ÓµÄʾÊýF0£¬ÒÔ´Ë
±íʾ»¬¶¯Ä¦²ÁÁ¦µÄ´óС£®ÔÙ½«Ä¾°å·Å»ØÔ­´¦²¢°´×¡£¬¼ÌÐøÏòÆ¿ÖмÓË®ºó£¬¼Çϵ¯»É³ÓµÄʾÊýF1£¬È»ºóÊÍ·Åľ°å£¬²¢ÓÃÃë±í¼ÇÏÂľ°åÔ˶¯µ½PQ´¦µÄʱ¼ät£®
¢Ùľ°åµÄ¼ÓËٶȿÉÒÔÓÃd¡¢t±íʾΪa=
2d
t2
2d
t2
£»
¢Ú¸Ä±äÆ¿ÖÐË®µÄÖÊÁ¿Öظ´ÊµÑ飬ȷ¶¨¼ÓËÙ¶ÈaÓ뵯»É³ÓʾÊýµÄ¹Øϵ£®Í¼3ÖÐÄܱíʾ¸ÃͬѧʵÑé½á¹ûµÄÊÇ
C
C
£»
¢ÛÓüÓË®µÄ·½·¨¸Ä±äÀ­Á¦µÄ´óСÓë¹Ò¹³ÂëµÄ·½·¨Ïà±È£¬ËüµÄÓŵãÊÇ
BC
BC
£®
A£®¿ÉÒԸı们¶¯Ä¦²ÁÁ¦µÄ´óС        B£®¿ÉÒÔ¸ü·½±ãµØ»ñÈ¡¶à×éʵÑéÊý¾Ý
C£®¿ÉÒԱȽϾ«È·µØ²â³öĦ²ÁÁ¦µÄ´óС  D£®¿ÉÒÔ»ñµÃ¸ü´óµÄ¼ÓËÙ¶ÈÒÔÌá¸ßʵÑ龫¶È
£¨3£©ÔÚÁ·Ï°Ê¹ÓöàÓñíµÄʵÑéÖУ¬Ä³Í¬Ñ§Á¬½ÓµÄµç·Èçͼ4Ëùʾ£®
¢ÙÈôÐýתѡÔñ¿ª¹Ø£¬Ê¹¼â¶Ë¶Ô×¼Ö±Á÷µçÁ÷µ²£¬±ÕºÏµç¼üS£¬´Ëʱ²âµÃµÄÊÇͨ¹ý
R1
R1
µÄµçÁ÷£»
¢ÚÈô¶Ï¿ªµç·Öеĵç¼üS£¬ÐýתѡÔñ¿ª¹ØʹÆä¼â¶Ë¶Ô׼ŷķµ²£¬´Ëʱ²âµÃµÄÊÇ
R1+R2
R1+R2
µÄµç×裻
¢ÛÈôÐýתѡÔñ¿ª¹Ø£¬Ê¹¼â¶Ë¶Ô×¼Ö±Á÷µçѹµ²£¬±ÕºÏµç¼üS£¬²¢½«»¬¶¯±ä×èÆ÷µÄ»¬Æ¬ÒÆÖÁ×î×ó¶Ë£¬´Ëʱ²âµÃµÄÊÇ
R2
R2
Á½¶ËµÄµçѹ£»
¢ÜÔÚʹÓöàÓñíµÄÅ·Ä·µ²²âÁ¿µç×èʱ£¬Èô
D
D

A£®Ë«ÊÖÄóסÁ½±í±Ê½ðÊô¸Ë£¬²âÁ¿Öµ½«Æ«´ó
B£®²âÁ¿Ê±·¢ÏÖÖ¸ÕëÏò×óÆ«ÀëÖÐÑë¿Ì¶È¹ý´ó£¬Ôò±ØÐë¼õС±¶ÂÊ£¬ÖØе÷ÁãºóÔÙ½øÐвâÁ¿
C£®Ñ¡Ôñ¡°¡Ál0¡±±¶ÂʲâÁ¿Ê±·¢ÏÖÖ¸ÕëλÓÚ20Óë30 ÕýÖм䣬Ôò²âÁ¿ÖµµÈÓÚ250¦¸
D£®Å·Ä·±íÄڵĵç³ØʹÓÃʱ¼äÌ«³¤£¬ËäÈ»Íê³Éµ÷Á㣬µ«²âÁ¿Öµ½«ÂÔÆ«´ó£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÔÚÁ·Ï°Ê¹ÓöàÓñíµÄʵÑéÖУ¬Ä³Í¬Ñ§Á¬½ÓµÄµç·ÈçͼËùʾ£®
¢ÙÈôÐýתѡÔñ¿ª¹Ø£¬Ê¹Æä¼â¶Ë¶Ô×¼Ö±Á÷µçÁ÷µµ£¬´Ëʱ²âµÃµÄÊÇͨ¹ý
 
µÄµçÁ÷£»
¢ÚÈô¶Ï¿ªµç·Öеĵç¼ü£¬ÐýתѡÔñ¿ª¹ØʹÆä¼â¶Ë¶Ô׼ŷķµµ£¬´Ëʱ²âµÃµÄÊÇ
 
µÄ×èÖµ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÎÊ´ðÌâ

ijͬѧÁ·Ï°Ê¹ÓöàÓñí²âµç×裬µ±Ñ¡ÔñÅ·Ä·µµ¡Á10µµÁ¿³Ì²âijһµç×èʱ£¬Ò»ÇвÙ×÷ºÏÀí£¬µ«Ö¸ÕëƫתȴºÜ´ó£¬Ó¦¸Ä»»Å·Ä·µµµÄÐÂÁ¿³ÌΪ______µµ£¬»»ÓÃÐÂÁ¿³ÌºóÐèÒªÊ×ÏÈ______£¬ÔÚ²âÁ¿Ê±£¬´ý²âµç×èÒªÓë±ðµÄÔª¼þºÍµçÔ´¶Ï¿ª£¬²¢×¢Òâ²»ÒªÓÃÊÖ½Ó´¥±í±ÊµÄ½ðÊô¸Ë£¬ÈôÁ½ÊÖ·Ö±ðͬʱ½Ó´¥Á½½ðÊô¸Ë£¬Ôò²âÁ¿Öµ±ÈÕæÖµÒª______£¨Ñ¡Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£®²âÁ¿ºó£¬Îª·À±íÍ·ÄÚµç³Ø©µç£¬Ó¦½«Ñ¡Ôñ¿ª¹ØÐýµ½______µµµÄ×î´óÁ¿³Ì´¦»ò______´¦£¬ÒÔ±£»¤µç±í£®ÈôËûʹѡÔñ¿ª¹ØÖ¸ÔÚ¡°¡Á100¡±Å·Ä·µµ£¬²¢ÕýÈ·²Ù×÷ºó£¬Ö¸ÕëָʾλÖÃÈçͼËùʾ£¬Ôò´Ëµç×èµÄ×èÖµÊÇ______£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2008-2009ѧÄêÉϺ£Êмζ¨Çø¸ß¶þ£¨ÉÏ£©ÆÚÄ©ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

ijͬѧÁ·Ï°Ê¹ÓöàÓñí²âµç×裬µ±Ñ¡ÔñÅ·Ä·µµ×10µµÁ¿³Ì²âijһµç×èʱ£¬Ò»ÇвÙ×÷ºÏÀí£¬µ«Ö¸ÕëƫתȴºÜ´ó£¬Ó¦¸Ä»»Å·Ä·µµµÄÐÂÁ¿³ÌΪ______µµ£¬»»ÓÃÐÂÁ¿³ÌºóÐèÒªÊ×ÏÈ______£¬ÔÚ²âÁ¿Ê±£¬´ý²âµç×èÒªÓë±ðµÄÔª¼þºÍµçÔ´¶Ï¿ª£¬²¢×¢Òâ²»ÒªÓÃÊÖ½Ó´¥±í±ÊµÄ½ðÊô¸Ë£¬ÈôÁ½ÊÖ·Ö±ðͬʱ½Ó´¥Á½½ðÊô¸Ë£¬Ôò²âÁ¿Öµ±ÈÕæÖµÒª______£¨Ñ¡Ìî¡°´ó¡±»ò¡°Ð¡¡±£©£®²âÁ¿ºó£¬Îª·À±íÍ·ÄÚµç³Ø©µç£¬Ó¦½«Ñ¡Ôñ¿ª¹ØÐýµ½______µµµÄ×î´óÁ¿³Ì´¦»ò______´¦£¬ÒÔ±£»¤µç±í£®ÈôËûʹѡÔñ¿ª¹ØÖ¸ÔÚ¡°×100¡±Å·Ä·µµ£¬²¢ÕýÈ·²Ù×÷ºó£¬Ö¸ÕëָʾλÖÃÈçͼËùʾ£¬Ôò´Ëµç×èµÄ×èÖµÊÇ______£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸