ʵÑéÌâ

£¨Ò»£©¡¢ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖÐ

£¨1£©ÏÖÓÐÆ÷²Ä³ý´òµã¼ÆʱÆ÷Í⻹ÓУºA½»Á÷µçÔ´¡¢BÖ±Á÷µçÔ´¡¢CÖ½´ø¡¢D´ø¼Ð×ÓµÄÖØÎï¡¢E¿Ì¶È³ß¡¢FÌìƽ¡¢GÌú¼Ų̈£¬ÆäÖиÃʵÑé²»ÐèÒªµÄÆ÷²ÄÊÇ______________________¡£

£¨2£©ÊµÑéÖУ¬ÐèÒª²âÁ¿ºÍ¼ÆËãµÄÎïÀíÁ¿ÊÇ£º£¨    £©

     A¡¢ÏÂÂäµÄ¸ß¶È               B¡¢ÖØÁ¦¼ÓËÙ¶È

     C¡¢ÖØ´¸µÄÖÊÁ¿               D¡¢ÖØ´¸µÄÏÂÂäËÙ¶È

£¨3£©ÊµÑéÖУ¬Èô´òµã¼ÆʱÆ÷ûÄÜÍêÈ«ÊúÖ±£¬ÒÔÖÂÓÚÖ½´øͨ¹ýÏÞλ¿×ʱÊܵ½×èÁ¦£¬Í¬Ê±¿ÕÆøÒ²ÓÐ×èÁ¦×÷Óã¬Ôò±È½ÏÏÂÂäʱÎïÌå¼õСµÄÖØÁ¦ÊÆÄܺÍÔö¼ÓµÄ¶¯ÄÜ£¬Ó¦ÓЦ¤EP________¦¤EK£¨Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°£½¡±£©

£¨4£©ÊµÑéÖУ¬ÈôÏÈ¡¢ºóÓÃÖÊÁ¿½Ï´óµÄÖØ´¸ºÍÖÊÁ¿½ÏСµÄÖØ´¸×öʵÑ飬Ôò±È½ÏÁ½ÖÖÇé¿öϼõСµÄÖØÁ¦ÊÆÄܦ¤EPºÍÔö¼ÓµÄ¶¯Äܦ¤EK£¬Ñ¡ÓÃÖÊÁ¿___________£¨Ìî¡°½Ï´ó¡±»ò¡°½ÏС¡±£©µÄÖØ´¸×öʵÑéʱ£¬Æä±ÈÖµ¦¤EK/¦¤EP½Ï´ó¡£

£¨¶þ£©¡¢¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑé²ÉÓÃÖØÎï×ÔÓÉÏÂÂäµÄ·½·¨£º£¨±£ÁôÈýλÓÐЧÊý×Ö£©

£¨1£©ÈôʵÑéÖÐËùʹÓõÄÖØÎïÖÊÁ¿Îªm£½0.1kg£¬´òµãÖ½´øÈçͼËùʾ£¬OÊǵÚÒ»µã£¬OA¼ä»¹ÓÐδ»­³öµÄµã£¬´òµã¼Æʱ¼ä¸ôΪ0.02s£¬Ôò¼Ç¼Bµãʱ£¬ÖØÎïµÄËÙ¶ÈvB£½        £¬ÖØÎïµÄ¶¯ÄÜΪEK£½          ¡£´Ó¿ªÊ¼ÏÂÂäµ½Bµã£¬ÖØÎïµÄÖØÁ¦ÊÆÄܸıäÁ¿ÊǦ¤EP£½          £¬Òò´Ë£¬¿ÉÒԵóöµÄ½áÂÛÊÇ£º                       ¡£

£¨2£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËÙ¶Èv£¬Á¿³öÏÂÂäµÄ¾àÀëh£¬ÔòÒÔv2/2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÏÂͼÖеģº£¨      £©

£¨Ò»£©£¨1£©BF   £¨2£©AD   £¨3£©>   £¨4£©½Ï´ó

£¨¶þ£©£¨1£©0.585m/s   0.0171J    0.0172J    ÔÚʵÑéÎó²îÔÊÐíµÄ·¶Î§ÄÚ»úеÄÜÊغã

£¨2£©C

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2013?¶«³ÇÇø¶þÄ££©ÊµÑéÌ⣺
£¨1£©ÔÚÓá°µ¥°Ú²âÖØÁ¦¼ÓËٶȡ±µÄʵÑéÖУº
¢ÙijͬѧÔÚʵÑéÖвâµÃµÄСÇòÖ±¾¶Îªd£¬²â¶¨ÁË°ÚÏߵij¤¶ÈΪl£¬ÓÃÃë±í¼Ç¼СÇòÍê³Én´ÎÈ«Õñ¶¯µÄ×Üʱ¼äΪt£¬Ôòµ±µØµÄÖØÁ¦¼ÓËٶȵıíʾʽΪg=
4¦Ð2n2(l+
d
2
)
t2
4¦Ð2n2(l+
d
2
)
t2
£¨ÓÃd¡¢l¡¢n¡¢t±íʾ£©£®Èô¸ÃͬѧÓÃÓα꿨³ß²â¶¨ÁËСÇòµÄÖ±¾¶£¬Èçͼ1Ëùʾ£¬ÔòСÇòÖ±¾¶Îª
2.235
2.235
cm£»

¢ÚΪÁ˾¡¿ÉÄܼõСʵÑéÎó²î£¬ÏÂÊö²Ù×÷ÖпÉÐеÄÊÇ
ABC
ABC
£®
A£®°ÚÏßÆ«ÀëÊúÖ±·½ÏòµÄ×î´ó°Ú½ÇСÓÚ5¡ã
B£®µ±Ð¡Çòͨ¹ýƽºâλÖÃʱ¿ªÊ¼¼Æʱ
C£®ÈÃСÇò¾¡¿ÉÄÜÔÚͬһÊúÖ±ÃæÄÚ°Ú¶¯
D£®¼õС°ÚÇòµÄÖÊÁ¿
£¨2£©Ä³Í¬Ñ§Òª²âÁ¿Ò»½Ú¸Éµç³ØµÄµç¶¯ÊƺÍÄÚµç×裮
¢ÙʵÑéÊÒ³ýÌṩ¿ª¹ØSºÍµ¼ÏßÍ⣬ÓÐÒÔÏÂÆ÷²Ä¿É¹©Ñ¡Ôñ£ºµçѹ±í£ºV£¨Á¿³Ì3v£¬ÄÚ×èRv=10k¦¸£©µçÁ÷±í£ºG£¨Á¿³Ì3mA£¬ÄÚ×èRg=100¦¸£©µçÁ÷±í£ºA£¨Á¿³Ì3A£¬ÄÚ×èԼΪ0.5¦¸£©»¬¶¯±ä×èÆ÷£ºR1£¨×èÖµ·¶Î§0?10¦¸£¬¶î¶¨µçÁ÷2A£©R2£¨×èÖµ·¶Î§0?1000¦¸£¬¶î¶¨µçÁ÷1A£©¶¨Öµµç×裺R3=0.5¦¸¸ÃͬѧÒÀ¾ÝÆ÷²Ä»­³öÁËÈçͼ1ËùʾµÄÔ­Àíͼ£¬ËûûÓÐÑ¡ÓõçÁ÷±íAµÄÔ­ÒòÊÇ
Á¿³ÌÓë±»²âµçÁ÷ÖµÏà±È½ÏÌ«´ó
Á¿³ÌÓë±»²âµçÁ÷ÖµÏà±È½ÏÌ«´ó
£®
¢Ú¸Ãͬѧ½«µçÁ÷±íGÓ붨ֵµç×èR3²¢Áª£¬Êµ¼ÊÉÏÊǽøÐÐÁ˵ç±íµÄ¸Ä×°£¬ÔòËû¸Ä×°ºóµÄµçÁ÷±í¶ÔÓ¦µÄÁ¿³ÌÊÇ
0.60
0.60
A£®
¢ÛΪÁËÄÜ׼ȷµØ½øÐвâÁ¿£¬Í¬Ê±ÎªÁ˲Ù×÷·½±ã£¬ÊµÑéÖÐӦѡÓõĻ¬¶¯±ä×èÆ÷
R1
R1
£¨ÌîдÆ÷²ÄµÄ·ûºÅ£©
¢Ü¸ÃͬѧÀûÓÃÉÏÊöʵÑéÔ­Àíͼ²âµÃÊý¾Ý£¬ÒÔµçÁ÷±íG¶ÁÊýΪºá×ø±ê£¬ÒÔµçѹ±íV¶ÁÊýΪ×Ý×ø±ê»æ³öÁËÈçͼ2ËùʾµÄͼÏߣ¬¸ù¾ÝͼÏß¿ÉÇó³öµçÔ´µÄµç¶¯ÊÆE=
1.48
1.48
V £¨½á¹û±£ÁôÈýλÓÐЧÊý×Ö£©£¬µçÔ´µÄÄÚ×èr=
0.84
0.84
¦¸ £¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ʵÑéÌ⣨18·Ö£©

£¨Ò»£©¡¢ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖÐ

£¨1£©ÏÖÓÐÆ÷²Ä³ý´òµã¼ÆʱÆ÷Í⻹ÓУºA½»Á÷µçÔ´¡¢BÖ±Á÷µçÔ´¡¢CÖ½´ø¡¢D´ø¼Ð×ÓµÄÖØÎï¡¢E¿Ì¶È³ß¡¢FÌìƽ¡¢GÌú¼Ų̈£¬ÆäÖиÃʵÑé²»ÐèÒªµÄÆ÷²ÄÊÇ______________________¡£

£¨2£©ÊµÑéÖУ¬ÐèÒª²âÁ¿ºÍ¼ÆËãµÄÎïÀíÁ¿ÊÇ£º£¨    £©

    A¡¢ÏÂÂäµÄ¸ß¶È              B¡¢ÖØÁ¦¼ÓËÙ¶È

    C¡¢ÖØ´¸µÄÖÊÁ¿              D¡¢ÖØ´¸µÄÏÂÂäËÙ¶È

£¨3£©ÊµÑéÖУ¬Èô´òµã¼ÆʱÆ÷ûÄÜÍêÈ«ÊúÖ±£¬ÒÔÖÂÓÚÖ½´øͨ¹ýÏÞλ¿×ʱÊܵ½×èÁ¦£¬Í¬Ê±¿ÕÆøÒ²ÓÐ×èÁ¦×÷Óã¬Ôò±È½ÏÏÂÂäʱÎïÌå¼õСµÄÖØÁ¦ÊÆÄܺÍÔö¼ÓµÄ¶¯ÄÜ£¬Ó¦ÓЦ¤EP________¦¤EK£¨Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°£½¡±£©

£¨4£©ÊµÑéÖУ¬ÈôÏÈ¡¢ºóÓÃÖÊÁ¿½Ï´óµÄÖØ´¸ºÍÖÊÁ¿½ÏСµÄÖØ´¸×öʵÑ飬Ôò±È½ÏÁ½ÖÖÇé¿öϼõСµÄÖØÁ¦ÊÆÄܦ¤EPºÍÔö¼ÓµÄ¶¯Äܦ¤EK£¬Ñ¡ÓÃÖÊÁ¿___________£¨Ìî¡°½Ï´ó¡±»ò¡°½ÏС¡±£©µÄÖØ´¸×öʵÑéʱ£¬Æä±ÈÖµ¦¤EK/¦¤EP½Ï´ó¡£

£¨¶þ£©¡¢¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑé²ÉÓÃÖØÎï×ÔÓÉÏÂÂäµÄ·½·¨£º£¨±£ÁôÈýλÓÐЧÊý×Ö£©

£¨1£©ÈôʵÑéÖÐËùʹÓõÄÖØÎïÖÊÁ¿Îªm£½0.1kg£¬´òµãÖ½´øÈçͼËùʾ£¬OÊǵÚÒ»µã£¬OA¼ä»¹ÓÐδ»­³öµÄµã£¬´òµã¼Æʱ¼ä¸ôΪ0.02s£¬Ôò¼Ç¼Bµãʱ£¬ÖØÎïµÄËÙ¶ÈvB£½        £¬ÖØÎïµÄ¶¯ÄÜΪEK£½          ¡£´Ó¿ªÊ¼ÏÂÂäµ½Bµã£¬ÖØÎïµÄÖØÁ¦ÊÆÄܸıäÁ¿ÊǦ¤EP£½         £¬Òò´Ë£¬¿ÉÒԵóöµÄ½áÂÛÊÇ£º                      ¡£

£¨2£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËÙ¶Èv£¬Á¿³öÏÂÂäµÄ¾àÀëh£¬ÔòÒÔv2/2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÏÂͼÖеģº£¨     £©

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010Äê¹ã¶«Ê¡Õ¿½­¶þÖиßÒ»µÚ¶þѧÆÚÆÚÄ©¿¼ÊÔ£¨Àí×Û£©ÎïÀí²¿·Ö ÌâÐÍ£ºÊµÑéÌâ

ʵÑéÌ⣨18·Ö£©
£¨Ò»£©¡¢ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖÐ
£¨1£©ÏÖÓÐÆ÷²Ä³ý´òµã¼ÆʱÆ÷Í⻹ÓУºA½»Á÷µçÔ´¡¢BÖ±Á÷µçÔ´¡¢CÖ½´ø¡¢D´ø¼Ð×ÓµÄÖØÎï¡¢E¿Ì¶È³ß¡¢FÌìƽ¡¢GÌú¼Ų̈£¬ÆäÖиÃʵÑé²»ÐèÒªµÄÆ÷²ÄÊÇ______________________¡£
£¨2£©ÊµÑéÖУ¬ÐèÒª²âÁ¿ºÍ¼ÆËãµÄÎïÀíÁ¿ÊÇ£º£¨   £©

A£®ÏÂÂäµÄ¸ß¶ÈB£®ÖØÁ¦¼ÓËÙ¶È
C£®ÖØ´¸µÄÖÊÁ¿D£®ÖØ´¸µÄÏÂÂäËÙ¶È
£¨3£©ÊµÑéÖУ¬Èô´òµã¼ÆʱÆ÷ûÄÜÍêÈ«ÊúÖ±£¬ÒÔÖÂÓÚÖ½´øͨ¹ýÏÞλ¿×ʱÊܵ½×èÁ¦£¬Í¬Ê±¿ÕÆøÒ²ÓÐ×èÁ¦×÷Óã¬Ôò±È½ÏÏÂÂäʱÎïÌå¼õСµÄÖØÁ¦ÊÆÄܺÍÔö¼ÓµÄ¶¯ÄÜ£¬Ó¦ÓЦ¤EP________¦¤EK£¨Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°£½¡±£©
£¨4£©ÊµÑéÖУ¬ÈôÏÈ¡¢ºóÓÃÖÊÁ¿½Ï´óµÄÖØ´¸ºÍÖÊÁ¿½ÏСµÄÖØ´¸×öʵÑ飬Ôò±È½ÏÁ½ÖÖÇé¿öϼõСµÄÖØÁ¦ÊÆÄܦ¤EPºÍÔö¼ÓµÄ¶¯Äܦ¤EK£¬Ñ¡ÓÃÖÊÁ¿___________£¨Ìî¡°½Ï´ó¡±»ò¡°½ÏС¡±£©µÄÖØ´¸×öʵÑéʱ£¬Æä±ÈÖµ¦¤EK/¦¤EP½Ï´ó¡£
£¨¶þ£©¡¢¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑé²ÉÓÃÖØÎï×ÔÓÉÏÂÂäµÄ·½·¨£º£¨±£ÁôÈýλÓÐЧÊý×Ö£©
£¨1£©ÈôʵÑéÖÐËùʹÓõÄÖØÎïÖÊÁ¿Îªm£½0.1kg£¬´òµãÖ½´øÈçͼËùʾ£¬OÊǵÚÒ»µã£¬OA¼ä»¹ÓÐδ»­³öµÄµã£¬´òµã¼Æʱ¼ä¸ôΪ0.02s£¬Ôò¼Ç¼Bµãʱ£¬ÖØÎïµÄËÙ¶ÈvB£½       £¬ÖØÎïµÄ¶¯ÄÜΪEK£½         ¡£´Ó¿ªÊ¼ÏÂÂäµ½Bµã£¬ÖØÎïµÄÖØÁ¦ÊÆÄܸıäÁ¿ÊǦ¤EP£½         £¬Òò´Ë£¬¿ÉÒԵóöµÄ½áÂÛÊÇ£º                      ¡£

£¨2£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËÙ¶Èv£¬Á¿³öÏÂÂäµÄ¾àÀëh£¬ÔòÒÔv2/2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÏÂͼÖеģº£¨     £©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010Äê¹ã¶«Ê¡¸ßÒ»µÚ¶þѧÆÚÆÚÄ©¿¼ÊÔ£¨Àí×Û£©ÎïÀí²¿·Ö ÌâÐÍ£ºÊµÑéÌâ

ʵÑéÌ⣨18·Ö£©

£¨Ò»£©¡¢ÔÚ¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑéÖÐ

£¨1£©ÏÖÓÐÆ÷²Ä³ý´òµã¼ÆʱÆ÷Í⻹ÓУºA½»Á÷µçÔ´¡¢BÖ±Á÷µçÔ´¡¢CÖ½´ø¡¢D´ø¼Ð×ÓµÄÖØÎï¡¢E¿Ì¶È³ß¡¢FÌìƽ¡¢GÌú¼Ų̈£¬ÆäÖиÃʵÑé²»ÐèÒªµÄÆ÷²ÄÊÇ______________________¡£

£¨2£©ÊµÑéÖУ¬ÐèÒª²âÁ¿ºÍ¼ÆËãµÄÎïÀíÁ¿ÊÇ£º£¨    £©

     A¡¢ÏÂÂäµÄ¸ß¶È               B¡¢ÖØÁ¦¼ÓËÙ¶È

     C¡¢ÖØ´¸µÄÖÊÁ¿               D¡¢ÖØ´¸µÄÏÂÂäËÙ¶È

£¨3£©ÊµÑéÖУ¬Èô´òµã¼ÆʱÆ÷ûÄÜÍêÈ«ÊúÖ±£¬ÒÔÖÂÓÚÖ½´øͨ¹ýÏÞλ¿×ʱÊܵ½×èÁ¦£¬Í¬Ê±¿ÕÆøÒ²ÓÐ×èÁ¦×÷Óã¬Ôò±È½ÏÏÂÂäʱÎïÌå¼õСµÄÖØÁ¦ÊÆÄܺÍÔö¼ÓµÄ¶¯ÄÜ£¬Ó¦ÓЦ¤EP________¦¤EK£¨Ìî¡°£¾¡±¡¢¡°£¼¡±»ò¡°£½¡±£©

£¨4£©ÊµÑéÖУ¬ÈôÏÈ¡¢ºóÓÃÖÊÁ¿½Ï´óµÄÖØ´¸ºÍÖÊÁ¿½ÏСµÄÖØ´¸×öʵÑ飬Ôò±È½ÏÁ½ÖÖÇé¿öϼõСµÄÖØÁ¦ÊÆÄܦ¤EPºÍÔö¼ÓµÄ¶¯Äܦ¤EK£¬Ñ¡ÓÃÖÊÁ¿___________£¨Ìî¡°½Ï´ó¡±»ò¡°½ÏС¡±£©µÄÖØ´¸×öʵÑéʱ£¬Æä±ÈÖµ¦¤EK/¦¤EP½Ï´ó¡£

£¨¶þ£©¡¢¡°ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡±µÄʵÑé²ÉÓÃÖØÎï×ÔÓÉÏÂÂäµÄ·½·¨£º£¨±£ÁôÈýλÓÐЧÊý×Ö£©

£¨1£©ÈôʵÑéÖÐËùʹÓõÄÖØÎïÖÊÁ¿Îªm£½0.1kg£¬´òµãÖ½´øÈçͼËùʾ£¬OÊǵÚÒ»µã£¬OA¼ä»¹ÓÐδ»­³öµÄµã£¬´òµã¼Æʱ¼ä¸ôΪ0.02s£¬Ôò¼Ç¼Bµãʱ£¬ÖØÎïµÄËÙ¶ÈvB£½        £¬ÖØÎïµÄ¶¯ÄÜΪEK£½          ¡£´Ó¿ªÊ¼ÏÂÂäµ½Bµã£¬ÖØÎïµÄÖØÁ¦ÊÆÄܸıäÁ¿ÊǦ¤EP£½          £¬Òò´Ë£¬¿ÉÒԵóöµÄ½áÂÛÊÇ£º                       ¡£

£¨2£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËÙ¶Èv£¬Á¿³öÏÂÂäµÄ¾àÀëh£¬ÔòÒÔv2/2Ϊ×ÝÖᣬÒÔhΪºáÖá»­³öµÄͼÏßÓ¦ÊÇÏÂͼÖеģº£¨      £©

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸