£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ£¨       £©

A£®ÈÈÁ¿²»¿ÉÄÜ×Ô·¢µØ´ÓµÍÎÂÎïÌå´«µ½¸ßÎÂÎïÌå

B£®ÖÊÁ¿¡¢Î¶ȶ¼ÏàͬµÄÇâÆøºÍÑõÆø£¬·Ö×Óƽ¾ù¶¯Äܲ»Ïàͬ

C£®Òº¾§¼È¾ßÓÐÒºÌåµÄÁ÷¶¯ÐÔ£¬ÓÖ¾ßÓо§ÌåµÄ¹âѧ¸÷ÏòÒìÐÔÌصã

D£®±¥ºÍÆûѹËæζȵÄÉý¸ß¶ø±äС

£¨2£©ÓÃÓÍĤ·¨¹À²â·Ö×Ó´óСµÄʵÑé²½ÖèÈçÏ£º¢ÙÏòÌå»ýΪV1µÄ´¿ÓÍËáÖмÓÈë¾Æ¾«£¬Ö±µ½ÓÍËá¾Æ¾«ÈÜÒº×ÜÁ¿ÎªV2£»¢ÚÓÃ×¢ÉäÆ÷ÎüÈ¡ÉÏÊöÈÜÒº£¬Ò»µÎÒ»µÎµØµÎÈëСÁ¿Í²£¬µ±µÎÈënµÎʱÌå»ýΪV0£»¢ÛÏÈÍù±ß³¤Îª30¡«40cmµÄdzÅÌÀïµ¹Èë2cmÉîµÄË®£»¢ÜÓÃ×¢ÉäÆ÷ÍùË®ÃæÉϵÎ1µÎÉÏÊöÈÜÒº£¬µÈÓÍËᱡĤÐÎ×´Îȶ¨ºó£¬½«ÊÂÏÈ×¼±¸ºÃµÄ²£Á§°å·ÅÔÚdzÅÌÉÏ£¬²¢ÔÚ²£Á§°åÉÏÃè³öÓÍËᱡĤµÄÐÎ×´£»¢Ý½«»­ÓÐÓÍËᱡĤÂÖÀªÐÎ×´µÄ²£Á§°å£¬·ÅÔÚ»­ÓÐÐí¶à±ß³¤ÎªaµÄСÕý·½ÐεÄ×ø±êÖ½ÉÏ£¬¼ÆËã³öÂÖÀª·¶Î§ÄÚÕý·½ÐεÄ×ÜÊýΪN£®ÔòÉÏÊö¹ý³ÌÒÅ©µÄ²½ÖèÊÇ     £»ÓÍËá·Ö×ÓÖ±¾¶µÄ±í´ïʽd=        £®

 £¨3£©Ä³·ç¾°ÇøÓÐÒ»´¦Ô¼50m¸ßµÄÆÙ²¼£¬ÉõΪ׳¹Û£¬Çë¹À¼ÆÆÙ²¼ÉÏ¡¢ÏÂˮ̶µÄË®ÎÂÒòÆÙ²¼µÄ»úеÄÜת»¯³ÉÄÚÄܶøÏà²î¶àÉÙ£¿£ÛË®µÄ±ÈÈÈÈÝJ/(kg©q¡æ) £Ý

£¨1£©AC£¨3·Ö£¬Â©Ñ¡µÃ1·Ö£¬´íÑ¡µÃ0·Ö£©

£¨2£©½«ðò×Ó·Û¾ùÔÈÈöÔÚË®ÃæÉÏ£¨2·Ö£©  d=£¨2·Ö£©

£¨3£©ÉèË®µÄµÄÖÊÁ¿Îªm£¬ÉÏ¡¢ÏÂˮ̶µÄˮβîΪ¦¤t£¬ÓÉÄÜÁ¿Êغ㶨ÂÉÓÐ

                         £¨3·Ö£©

    ´úÈëÊý¾Ý½âµÃ  ¡æ           £¨2·Ö£©

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ
 

A£®ÈÈÁ¿²»¿ÉÄÜ×Ô·¢µØ´ÓµÍÎÂÎïÌå´«µ½¸ßÎÂÎïÌå
B£®ÖÊÁ¿¡¢Î¶ȶ¼ÏàͬµÄÇâÆøºÍÑõÆø£¬·Ö×Óƽ¾ù¶¯Äܲ»Ïàͬ
C£®Òº¾§¼È¾ßÓÐÒºÌåµÄÁ÷¶¯ÐÔ£¬ÓÖ¾ßÓо§ÌåµÄ¹âѧ¸÷ÏòÒìÐÔÌصã
D£®±¥ºÍÆûѹËæζȵÄÉý¸ß¶ø±äС
£¨2£©ÓÃÓÍĤ·¨¹À²â·Ö×Ó´óСµÄʵÑé²½ÖèÈçÏ£º¢ÙÏòÌå»ýΪV1µÄ´¿ÓÍËáÖмÓÈë¾Æ¾«£¬Ö±µ½ÓÍËá¾Æ¾«ÈÜÒº×ÜÁ¿ÎªV2£»¢ÚÓÃ×¢ÉäÆ÷ÎüÈ¡ÉÏÊöÈÜÒº£¬Ò»µÎÒ»µÎµØµÎÈëСÁ¿Í²£¬µ±µÎÈënµÎʱÌå»ýΪV0£»¢ÛÏÈÍù±ß³¤Îª30¡«40cmµÄdzÅÌÀïµ¹Èë2cmÉîµÄË®£»¢ÜÓÃ×¢ÉäÆ÷ÍùË®ÃæÉϵÎ1µÎÉÏÊöÈÜÒº£¬µÈÓÍËᱡĤÐÎ×´Îȶ¨ºó£¬½«ÊÂÏÈ×¼±¸ºÃµÄ²£Á§°å·ÅÔÚdzÅÌÉÏ£¬²¢ÔÚ²£Á§°åÉÏÃè³öÓÍËᱡĤµÄÐÎ×´£»¢Ý½«»­ÓÐÓÍËᱡĤÂÖÀªÐÎ×´µÄ²£Á§°å£¬·ÅÔÚ»­ÓÐÐí¶à±ß³¤ÎªaµÄСÕý·½ÐεÄ×ø±êÖ½ÉÏ£¬¼ÆËã³öÂÖÀª·¶Î§ÄÚÕý·½ÐεÄ×ÜÊýΪN£®ÔòÉÏÊö¹ý³ÌÒÅ©µÄ²½ÖèÊÇ
 
£»ÓÍËá·Ö×ÓÖ±¾¶µÄ±í´ïʽd=
 
£®
£¨3£©Ä³·ç¾°ÇøÓÐÒ»´¦Ô¼50m¸ßµÄÆÙ²¼£¬ÉõΪ׳¹Û£¬Çë¹À¼ÆÆÙ²¼ÉÏ¡¢ÏÂˮ̶µÄË®ÎÂÒòÆÙ²¼µÄ»úеÄÜת»¯³ÉÄÚÄܶøÏà²î¶àÉÙ£¿[Ë®µÄ±ÈÈÈÈÝcË®=4.2¡Á103J/£¨kg©q¡æ£©]£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

A £¨Ñ¡ÐÞÄ£¿é3-3£©
£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ
AC
AC

A£®ÈÈÁ¿²»¿ÉÄÜ×Ô·¢µØ´ÓµÍÎÂÎïÌå´«µ½¸ßÎÂÎïÌå
B£®ÖÊÁ¿¡¢Î¶ȶ¼ÏàͬµÄÇâÆøºÍÑõÆø£¬·Ö×Óƽ¾ù¶¯Äܲ»Ïàͬ
C£®Òº¾§¼È¾ßÓÐÒºÌåµÄÁ÷¶¯ÐÔ£¬ÓÖ¾ßÓо§ÌåµÄ¹âѧ¸÷ÏòÒìÐÔÌصã
D£®±¥ºÍÆûѹËæζȵÄÉý¸ß¶ø±äС
£¨2£©ÈçͼËùʾ£¬×Ý×ø±ê±íʾÁ½¸ö·Ö×Ó¼äÒýÁ¦¡¢³âÁ¦µÄ´óС£¬ºá×ø±ê±íʾÁ½¸ö·Ö×Ó¼äµÄ¾àÀ룬ͼÖÐÁ½ÌõÇúÏß·Ö±ð±íʾÁ½·Ö×Ó¼äÒýÁ¦¡¢³âÁ¦µÄ´óСËæ·Ö×Ó¼ä¾àÀëµÄ±ä»¯¹Øϵ£¬eΪÁ½ÇúÏߵĽ»µã£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ
B
B

A£®abΪ³âÁ¦ÇúÏߣ¬cdΪÒýÁ¦ÇúÏߣ¬eµãºá×ø±êµÄÊýÁ¿¼¶Îª10-10m
B£®abΪÒýÁ¦ÇúÏߣ¬cdΪ³âÁ¦ÇúÏߣ¬eµãºá×ø±êµÄÊýÁ¿¼¶Îª10-10m
C£®ÈôÁ½¸ö·Ö×Ó¼ä¾àÀë´óÓÚeµãµÄºá×ø±ê£¬Ôò·Ö×Ó¼ä×÷ÓÃÁ¦±íÏÖΪ³âÁ¦
D£®ÈôÁ½¸ö·Ö×Ó¼ä¾àÀëÔ½À´Ô½´ó£¬Ôò·Ö×ÓÊÆÄÜÒàÔ½À´Ô½´ó
£¨3£©°ÂÔËÏéÔÆ»ð¾æµÄȼÉÕϵͳÓÉȼÆø¹Þ£¨ÄÚÓÐҺ̬±ûÍ飩¡¢ÎÈѹװÖúÍȼÉÕÆ÷Èý²¿·Ö×é³É£¬µ±ÎÈѹ·§´ò¿ªÒÔºó£¬È¼ÆøÒÔÆø̬ÐÎʽ´ÓÆø¹ÞÀï³öÀ´£¬¾­¹ýÎÈѹ·§ºó½øÈëȼÉÕÊÒ½øÐÐȼÉÕ£®ÔòÒÔÏÂ˵·¨ÖÐÕýÈ·µÄÊÇ
AC
AC

A£®È¼ÆøÓÉҺ̬±äΪÆø̬µÄ¹ý³ÌÖÐÒª¶ÔÍâ×ö¹¦
B£®È¼ÆøÓÉҺ̬±äΪÆø̬µÄ¹ý³ÌÖзÖ×ӵķÖ×ÓÊÆÄܼõÉÙ
C£®È¼ÆøÔÚȼÉÕÊÒȼÉյĹý³ÌÊÇìØÔö¼ÓµÄ¹ý³Ì
D£®È¼ÆøÔÚȼÉÕºóÊÍ·ÅÔÚÖÜΧ»·¾³ÖеÄÄÜÁ¿ºÜÈÝÒ×±»»ØÊÕÔÙÀûÓã®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

B£®£¨Ñ¡ÐÞÄ£¿é3-4£©
£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ
CD
CD

A£®Ò½Ñ§ÉÏÀûÓæÃÉäÏßÖÎÁÆÖ×ÁöÖ÷ÒªÊÇÀûÓÃÁ˦ÃÉäÏߵĴ©Í¸ÄÜÁ¦Ç¿µÄÌصã
B£®ÈôÓÃƵÂʸü¸ßµÄµ¥É«¹âÕÕÉäʱ£¬Í¬¼¶Å£¶Ù»·°ë¾¶½«»á±ä´ó
C£®»úе²¨ÔÚ´«²¥²¨Ô´µÄÕñ¶¯µÄÐÎʽµÄͬʱ´«µÝÁËÄÜÁ¿
D£®Âó¿Ë¶úËï-ĪÀ×ʵÑé±íÃ÷£º²»ÂÛ¹âÔ´Óë¹Û²ìÕß×öÔõÑùµÄÏà¶ÔÔ˶¯£¬¹âËÙ¶¼ÊÇÒ»ÑùµÄ

£¨2£©ÓÐÁ½¸öͬѧÀûÓüÙÆÚ·Ö±ðÈ¥²Î¹Û±±´óºÍÄÏ´óµÄÎïÀíʵÑéÊÒ£¬¸÷×ÔÔÚÄÇÀïÀûÓÃÏȽøµÄDISϵͳ½Ï׼ȷµØ̽¾¿ÁË¡°µ¥°ÚµÄÖÜÆÚTÓë°Ú³¤LµÄ¹Øϵ¡±£¬ËûÃÇͨ¹ýУ԰Íø½»»»ÊµÑéÊý¾Ý£¬²¢ÓɼÆËã»ú»æÖÆÁËT2-LͼÏó£¬Èçͼ¼×Ëùʾ£®È¥±±´óµÄͬѧËù²âʵÑé½á¹û¶ÔÓ¦µÄͼÏßÊÇ
B
B
£¨Ñ¡Ìî¡°A¡±»ò¡°B¡±£©£®ÁíÍ⣬ÔÚÄÏ´ó×ö̽¾¿µÄͬѧ»¹ÀûÓüÆËã»ú»æÖÆÁËa¡¢bÁ½¸ö°ÚÇòµÄÕñ¶¯Í¼Ïó£¨ÈçͼÒÒ£©£¬ÓÉͼ¿ÉÖª£¬Á½µ¥°Ú°Ú³¤Ö®±È
LaLb
=
4£º9
4£º9
£®ÔÚt=1sʱbÇòÕñ¶¯·½ÏòÊÇ
ÑØyÖḺ·½Ïò
ÑØyÖḺ·½Ïò
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

 

£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ      £¨±¾Ð¡Ìâ6·Ö¡£ÔÚ¸ø³öµÄËĸöÑ¡ÏîÖУ¬¿ÉÄÜÖ»ÓÐÒ»Ïî·ûºÏÌâÄ¿ÒªÇó£¬Ò²¿ÉÄÜÓжàÏî·ûºÏÌâÄ¿ÒªÇó¡£È«²¿Ñ¡¶ÔµÄµÃ6·Ö£¬Ñ¡¶Ôµ«²»È«µÄµÃ3·Ö£¬ÓÐÑ¡´íµÄµÃ0·Ö£©

A£®µç´Å²¨Æ×°üÀ¨ÎÞÏߵ粨¡¢ºìÍâÏß¡¢¿É¼û¹â¡¢×ÏÍâÏß¡¢XÉäÏß¡¢¦ÃÉäÏß

B£®Å£¶Ù»·ÊDZ¡Ä¤¸ÉÉæµÄ½á¹û£¬µ±ÓÃƵÂʸü¸ßµÄµ¥É«¹âÕÕÉäʱ£¬Í¬¼¶Å£¶Ù»·°ë¾¶½«»á±ä´ó

C£®»úе²¨ÊǽéÖÊ´«µÝ²¨Ô´ÖʵãÒÔ¼°Õñ¶¯ÄÜÁ¿µÄÒ»ÖÖ·½Ê½

D£®Âó¿Ë¶úËï-ĪÀ×ʵÑé½á¹û±íÃ÷£º²»ÂÛ¹âÔ´Óë¹Û²ìÕß×öÔõÑùµÄÏà¶ÔÔ˶¯£¬¹âËÙ¶¼ÊÇÒ»ÑùµÄ

£¨2£©ÈçͼËùʾ£¬°ëÔ²²£Á§×©µÄ°ë¾¶R=10cm£¬ÕÛÉäÂÊΪn=£¬Ö±¾¶ABÓëÆÁÄ»´¹Ö±²¢½Ó´¥ÓÚAµã£®¼¤¹âaÒÔÈëÉä½Çi=30¡ãÉäÏò°ëÔ²²£Á§×©µÄÔ²ÐÄO£¬½á¹ûÔÚˮƽÆÁÄ»MNÉϳöÏÖÁ½¸ö¹â°ß£®ÇóÁ½¸ö¹â°ßÖ®¼äµÄ¾àÀëL£®

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011-2012ѧÄêºÓ±±Ê¡Ê¯¼ÒׯÊиßÈýÎïÀí²¹³äѹÖáÌâÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º¼ÆËãÌâ

 

£¨1£©ÔÚÒÔÏÂ˵·¨ÖУ¬ÕýÈ·µÄÊÇ       £¨±¾Ð¡Ìâ6·Ö¡£ÔÚ¸ø³öµÄËĸöÑ¡ÏîÖУ¬¿ÉÄÜÖ»ÓÐÒ»Ïî·ûºÏÌâÄ¿ÒªÇó£¬Ò²¿ÉÄÜÓжàÏî·ûºÏÌâÄ¿ÒªÇó¡£È«²¿Ñ¡¶ÔµÄµÃ6·Ö£¬Ñ¡¶Ôµ«²»È«µÄµÃ3·Ö£¬ÓÐÑ¡´íµÄµÃ0·Ö£©

A£®µç´Å²¨Æ×°üÀ¨ÎÞÏߵ粨¡¢ºìÍâÏß¡¢¿É¼û¹â¡¢×ÏÍâÏß¡¢XÉäÏß¡¢¦ÃÉäÏß

B£®Å£¶Ù»·ÊDZ¡Ä¤¸ÉÉæµÄ½á¹û£¬µ±ÓÃƵÂʸü¸ßµÄµ¥É«¹âÕÕÉäʱ£¬Í¬¼¶Å£¶Ù»·°ë¾¶½«»á±ä´ó

C£®»úе²¨ÊǽéÖÊ´«µÝ²¨Ô´ÖʵãÒÔ¼°Õñ¶¯ÄÜÁ¿µÄÒ»ÖÖ·½Ê½

D£®Âó¿Ë¶úËï-ĪÀ×ʵÑé½á¹û±íÃ÷£º²»ÂÛ¹âÔ´Óë¹Û²ìÕß×öÔõÑùµÄÏà¶ÔÔ˶¯£¬¹âËÙ¶¼ÊÇÒ»ÑùµÄ

£¨2£©ÈçͼËùʾ£¬°ëÔ²²£Á§×©µÄ°ë¾¶R=10cm£¬ÕÛÉäÂÊΪn=£¬Ö±¾¶ABÓëÆÁÄ»´¹Ö±²¢½Ó´¥ÓÚAµã£®¼¤¹âaÒÔÈëÉä½Çi=30¡ãÉäÏò°ëÔ²²£Á§×©µÄÔ²ÐÄO£¬½á¹ûÔÚˮƽÆÁÄ»MNÉϳöÏÖÁ½¸ö¹â°ß£®ÇóÁ½¸ö¹â°ßÖ®¼äµÄ¾àÀëL£®

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸