9£®ÈçͼËùʾ£¬Õæ¿ÕÖÐÓÐA¡¢BÁ½¸öµÈÁ¿ÒìÖÖµãµçºÉ£¬O¡¢M¡¢NÊÇABÁ¬ÏßµÄÖд¹ÏßÉϵÄÈý¸öµã£¬A´øÕýµçºÉ£¬B´ø¸ºµçºÉ£®Ò»ÊÔ̽µçºÉ½öÊܵ糡Á¦×÷Ó㬴ÓMÔ˶¯µ½NµÄ¹ì¼£ÈçͼÖÐʵÏßËùʾ£®ÏÂÁÐÅжÏÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®´ËÊÔ̽µçºÉÒ»¶¨´ø¸ºµç
B£®´ËÊÔ̽µçºÉÔÚM¡¢NÁ½µãÊܵĵ糡Á¦Ò»¶¨Ïàͬ
C£®´ËÊÔ̽µçºÉÔÚM¡¢NÁ½µãµÄµçÊÆÄÜÒ»¶¨ÏàµÈ
D£®´ËÊÔ̽µçºÉÔÚM¡¢NÁ½µãµÄËÙ¶ÈÒ»¶¨Ïàͬ

·ÖÎö µç³¡ÏßÊÇ´ÓÕýµçºÉ»òÕßÎÞÇîÔ¶³ö·¢³ö£¬µ½¸ºµçºÉ»òÎÞÇîÔ¶´¦ÎªÖ¹£¬Ñص糡Ïߵķ½Ïò£¬µçÊƽµµÍ£¬µç³¡ÏßÃܵĵط½µç³¡µÄÇ¿¶È´ó£¬µç³¡ÏßÊèµÄµØ·½µç³¡µÄÇ¿¶ÈС£¬µç³¡Á¦×öÕý¹¦£¬µçÊÆÄܼõС£¬µç³¡Á¦×ö¸º¹¦£¬µçÊÆÄÜÔö¼Ó£®

½â´ð ½â£ºA¡¢Á£×ÓÊܵ½µÄµç³¡Á¦Ö¸Ïò¹ì¼£ÍäÇúµÄÒ»²à£¬ËùÒÔ¸ÃÁ£×ÓÊܵ½µÄµç³¡Á¦Ö¸Ïò´øÕýµçµÄAµçºÉ£¬ËùÒÔ¸ÃÁ£×Ó´øµÄÊǸºµç£¬ËùÒÔAÕýÈ·£»
B¡¢C¡¢ÒòΪO¡¢M¡¢NÊÇABÁ¬ÏßµÄÖд¹ÏßÉϵÄÈý¸öµã£¬¸ù¾ÝµÈÁ¿ÒìÖÖµãµçºÉµç³¡Ïß¼°µÈÊÆÃæ·Ö²¼Ìصã¿ÉÖª£¬ËùÒÔEM´óÓÚEN£¬¦ÕMµÈÓÚ¦ÕN£¬ÊÔ̽µçºÉÔÚM´¦µÄµçÊÆÄܵÈÓÚÔÚN´¦µÄµçÊÆÄÜ£¬¶¯ÄÜÏàͬ£¬µ«Ëٶȷ½Ïò²»Í¬£¬ËùÒÔBD´íÎó£¬CÕýÈ·£®
¹ÊÑ¡£ºAC£®?

µãÆÀ ±¾ÌâÒªÇóÕÆÎÕסµÈÁ¿ÒìÖÖµçºÉµÄµç³¡µÄ·Ö²¼µÄÇé¿ö£¬¸ù¾Ýµç³¡·Ö²¼µÄÌصã¿ÉÒÔ·ÖÎö±¾Ì⣮

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ

19£®Ä³Í¬Ñ§ÓÃÌú¼Ų̈½«³¤Ä¾°åÇãб֧ÔÚˮƽ×ÀÃæÉÏ£¬×é³ÉÈçͼ1ËùʾװÖ㬲âÁ¿Îï¿éÑØбÃæÏ»¬µÄ¼ÓËٶȣ®ËùÌṩµÄÒÇÆ÷ÓУº³¤Ä¾°å¡¢Îï¿é¡¢´òµã¼ÆʱÆ÷£¨º¬Ö½´ø£©¡¢Ñ§ÉúµçÔ´¡¢Ã׳ߡ¢Ìú¼Ų̈¼°µ¼Ïß¡¢¿ª¹ØµÈ£®´òµã¼ÆʱÆ÷´ò³öµÄÒ»ÌõÖ½´øÈçͼ2Ëùʾ£¬Ö½´øÉϱê×¢Á˼¸¸ö¼ÆÊýµã£¬ÏàÁÚÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµãûÓбê³ö£¬ÆäÖÐx1=7.06cm¡¢x2=7.68cm¡¢x3=8.30cm¡¢x4=8.92cm£¬Ôò£¨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

£¨1£©bµã´¦Ë²Ê±ËٶȵĴóСÊÇ0.74m/s£»
£¨2£©Ö½´ø¼ÓËٶȵĴóСÊÇ0.62m/s2£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

20£®Ò»¸öСÇò´Ó8m¸ß´¦ÂäÏ£¬±»µØÃ浯»Ø£¬ÔÚ3m¸ß´¦±»½Óס£¬ÔòСÇòÔÚÕû¸ö¹ý³ÌÖУ¨¡¡¡¡£©
A£®Î»ÒÆÊÇ5mB£®Â·³ÌÊÇ5mC£®Î»ÒÆ´óСÊÇ3mD£®ÒÔÉϾù²»¶Ô

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

17£®ÈçͼËùʾ£¬ÖÊÁ¿ÎªmµÄľ¿é£¬Óù⻬ϸÉþË©×Å£¬ÖÃÓںܴóµÄˮƽתÅÌÉÏ£¬Ï¸Éþ´©¹ýתÅÌÖÐÑëµÄ¹â»¬Ï¸¹Ü£¬ÓëÖÊÁ¿Ò²ÎªmµÄСÇòÏàÁ¬£¬Ä¾¿éµÄ×î´ó¾²Ä¦²ÁÁ¦ÎªÆäÖØÁ¦µÄ¦Ì±¶£¨¦Ì=0.2£©£¬µ±×ªÅÌÒÔ½ÇËٶȦØ=4»¡¶È/ÃëÔÈËÙת¶¯Ê±£¬Òª±£³Öľ¿éÓëתÅÌÏà¶Ô¾²Ö¹£¬Ä¾¿éת¶¯µÄ¹ìµÀ°ë¾¶µÄ·¶Î§ÊǶàÉÙ£¿£¨g=10m/s2£¬½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

4£®Ò»¸öÎïÌåÓɾ²Ö¹¿ªÊ¼×öÔȼÓËÙÖ±ÏßÔ˶¯£¬µÚ1sÄ©µÄËٶȴﵽ4m/s£¬ÎïÌåÔÚÇ°3sÄÚµÄλÒÆÊÇ£¨¡¡¡¡£©
A£®6mB£®8mC£®10mD£®18m

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

14£®ÏÖÒª¾«È·²âÁ¿Ä³µçѹ±íV1£¨Á¿³Ì0.6V£¬ÄÚ×èÔ¼500¦¸£©µÄÄÚ×裬ҪÇó²âÁ¿Ê±ËùÓõç±íµÄʾÊýÄÜ´ÓÁ㿪ʼµ÷½Ú£®¿ÉÑ¡ÓõÄÆ÷²ÄÈçÏ£º
A£®µçÁ÷±íA£¨Á¿³Ì0.6A£¬ÄÚ×èÔ¼1¦¸£©£»
B£®µçѹ±íV2£¨Á¿³Ì3V£¬ÄÚ×èÔ¼3k¦¸£©£»
C£®»¬¶¯±ä×èÆ÷R1£¨×î´óµç×è10¦¸£©£»
D£®¶¨Öµµç×èR2£¨×èÖµ2k¦¸£©£»
E£®µçÔ´E£¨µç¶¯ÊÆ3V£¬ÄÚ×èԼΪ1¦¸£©£»
F£®¿ª¹ØS¼°µ¼ÏßÈô¸É£®
£¨1£©ÊµÑéÖУ¬µç±íӦѡÓÃB£¨ÌîÆ÷²ÄÐòºÅ×Öĸ£©£»
£¨2£©ÔÚÐéÏß¿òÄÚ»­³öʵÑéµç·ͼ²¢±êÃ÷¸÷Æ÷²ÄµÄ·ûºÅ£»
£¨3£©´ý²âµçѹ±íV1µÄÄÚ×è±í´ïʽΪRV=$\frac{{{U}_{1}^{\;}R}_{2}^{\;}}{{U}_{1}^{\;}{-U}_{2}^{\;}}$£¨ÓÃËù²âÎïÀíÁ¿µÄ·ûºÅ±íʾ£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

1£®ÈçͼËùʾ£¬Ä¾¿é´Ó×ó±ßбÃæµÄAµã×Ô¾²Ö¹¿ªÊ¼Ï»¬£¬¾­¹ýÒ»¶ÎˮƽÃæºó£¬ÓÖ»¬ÉÏÓÒ±ßбÃ沢ͣÁôÔÚBµã£®Èô¶¯Ä¦²ÁÒòÊý´¦´¦ÏàµÈ£¬ABÁ¬ÏßÓëˮƽÃæ¼Ð½ÇΪ¦È£¬²»¿¼ÂÇľ¿éÔÚ·¾¶×ªÕÛ´¦ÅöײËðʧµÄÄÜÁ¿£¬Ôò£¨¡¡¡¡£©
A£®Ä¾¿éÓë½Ó´¥Ãæ¼äµÄ¶¯Ä¦²ÁÒòÊýΪsin¦È
B£®Ä¾¿éÓë½Ó´¥Ãæ¼äµÄ¶¯Ä¦²ÁÒòÊýΪtan¦È
C£®Á½Ð±ÃæµÄÇã½ÇÒ»¶¨´óÓÚ¦È
D£®ÓÒ±ßбÃæµÄÇã½Ç¿ÉÒÔ´óÓÚ¦È

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

18£®Í¼Ê¾ÊÇijµç³¡ÖеÄÒ»ÌõÖ±µç³¡Ïߣ¬Ò»µç×Ó´ÓaµãÓɾ²Ö¹ÊÍ·Å£¬ÔÚ¾²µçÁ¦×÷ÓÃÏÂÑØÖ±ÏßÏòbµãÔ˶¯£¬ÏÂÁÐÓйظõ糡Çé¿öµÄÅжÏÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®³¡Ç¿EaÒ»¶¨Ð¡ÓÚEbB£®¸Ãµç³¡Ò»¶¨ÊÇÔÈÇ¿µç³¡
C£®aµãµçÊÆÒ»¶¨µÍÓÚbµãµçÊÆD£®µç×Ó¾ßÓеĵçÊÆÄÜEpaÒ»¶¨Ð¡ÓÚEpb

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ

19£®¹ØÓÚ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÁ¦¡¢ÖÊÁ¿µÄ¹Øϵ¡±ÊµÑ飬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£®Ì½¾¿¼ÓËÙ¶ÈÓëÖÊÁ¿µÄ¹Øϵʱ£¬Ó¦¸Ã¸Ä±äÀ­Á¦µÄ´óС
B£®Ì½¾¿¼ÓËÙ¶ÈÓëÁ¦µÄ¹Øϵʱ£¬×÷a-FͼÏóÓ¦¸ÃÓÃÏ߶ÎÒÀ´Î½«¸÷µãÁ¬½ÓÆðÀ´
C£®Ì½¾¿¼ÓËÙ¶ÈÓëÖÊÁ¿µÄ¹Øϵʱ£¬ÎªÁËÖ±¹ÛÅж϶þÕß¼äµÄ¹Øϵ£¬Ó¦×÷³öa-MͼÏó
D£®±¾ÊµÑé²ÉÓõķ½·¨ÊÇ¿ØÖƱäÁ¿·¨

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸