ÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹ÜÏߣ¬³¤Ô¼50cm£¬µç×èԼΪ40¦¸£¬ÏÖÐè²â¶¨ËüµÄÄÚ¾¶d£¬ÒÑÖªÕâÖÖ½ðÊôµÄµç×èÂÊΪ¦Ñ£¬ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º
A£®ÀåÃ׿̶ȳߠ                                       B£®ºÁÃ׿̶ȳß
C£®ÂÝÐý²â΢Æ÷                                        D£®µçÁ÷±í£¨300mA£¬10¦¸£©
E£®µçÁ÷±í£¨3A£¬0.1¦¸£©                         F£®µçѹ±í£¨3V£¬6k¦¸£©
G£®±ä×èÏ䣨0~999.9¦¸£¬0.2A£©              H£®»¬¶¯±ä×èÆ÷£¨10¦¸£¬2A£©
I£®Ðîµç³Ø£¨6V£¬0.05¦¸£©                        J£®¿ª¹ØÒ»¸ö¼°µ¼ÏßÈô¸É
ÇëÉè¼ÆÒ»¸öʵÑé·½°¸£¬»Ø´ðÏÂÃæÎÊÌ⣺
¢Ù»­³öʵÑéµç·ԭÀíͼ£»
¢ÚӦѡÓõÄʵÑéÆ÷²ÄÓУ¨Ö»Ìîд×Öĸ´úºÅ£©£º                £»
¢ÛʵÑéÖÐÓ¦²âÁ¿µÄÎïÀíÁ¿µÄÃû³Æ¼°·ûºÅÊÇ£º                         £»
¢ÜÓÃÒÑÖªÎïÀíÁ¿ºÍ²âµÃµÄÎïÀíÁ¿ÍƵ¼³ö¼ÆËã½ðÊôϸ¹ÜÄÚ¾¶dµÄ±í´ïʽ£¨Ð´³öÍƵ¼¹ý³Ì£©
¢ÙÈçͼ¢ÚBCDFHIJ ¢Û½ðÊô¹ÜÏߵij¤³äL£¬Í⾶D£¬¼ÓÔÚ¹ÜÏßÁ½¶ËµÄµçѹU£¬Í¨¹ý¹ÜÏߵĵçÁ÷I ¢ÜÉè¹ÜÏߵĵç×èΪRx£¬¸ù¾ÝÅ·Ä·¶¨ÂÉ£¬ÓÐRx=£¬¹ÜÏߵĺá½ØÃæ»ýΪ £¬¸ù¾Ýµç×趨ÂÉ£¬ÓÐRx=£¬ÁªÁ¢µÃ.
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2009?·ą́Çøһģ£©£¨1£©ÔÚ¡¶ÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡·µÄʵÑéÖУ¬ÒÑÖªÖØ´¸µÄÖÊÁ¿Îªm£¬Ê¹ÓõĽ»Á÷µçµÄƵÂÊΪf£®ÖØ´¸´Ó¸ß´¦Óɾ²Ö¹¿ªÊ¼ÏÂÂ䣬ÖØ´¸ÉÏÍÏ×ŵÄÖ½´øͨ¹ý´òµã¼ÆʱÆ÷´ò³öһϵÁеĵ㣬¶ÔÖ½´øÉϵĵã½øÐвâÁ¿²¢Í¨¹ý¼ÆË㣬¾Í¿ÉÒÔÑéÖ¤»úеÄÜÊغ㶨ÂÉ£®
¢ÙÈçͼ1Ëùʾ£¬Ñ¡È¡Ö½´øÉÏ´ò³öµÄÁ¬ÐøÎå¸öµãA¡¢B¡¢C¡¢D¡¢E£¬²â³öAµã¾àÆðʼµãOµÄ¾àÀëΪs0£¬µãA¡¢C¼äµÄ¾àÀëΪs1£¬µãC¡¢E¼äµÄ¾àÀëΪs2£¬ÓÃÒÔÉϸø³öµÄÒÑÖªÁ¿Ð´³öCµãËٶȵıí´ïʽΪ¦Ôc=
(s1+s2)f
4
(s1+s2)f
4
£¬´òµã¼ÆʱÆ÷ÔÚ´òOµãµ½CµãµÄÕâ¶Îʱ¼äÄÚ£¬ÖØ´¸µÄÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª
mg£¨s0+s1£©
mg£¨s0+s1£©
£¬¶¯ÄܵÄÔö¼ÓÁ¿Îª
m(s1+s2)2f2
32
m(s1+s2)2f2
32
£®
¢ÚijͬѧÉϽ»µÄʵÑ鱨¸æÏÔʾ£¬ÖØ´¸Ôö¼ÓµÄ¶¯ÄÜÂÔ´óÓÚÖØ´¸¼õСµÄÖØÁ¦ÊÆÄÜ£¬Ôò³öÏÖÕâÒ»ÎÊÌâµÄÔ­Òò¿ÉÄÜÊÇ
BC
BC
£®£¨Ìî×Öĸ£©
A£®ÖØ´¸µÄÖÊÁ¿²âÁ¿´íÎó
B£®¸Ãͬѧ×Ô±àÁËʵÑéÊý¾Ý
C£®¸ÃͬѧʵÑé²Ù×÷ʱÏÈÊÍ·ÅÖ½´ø£¬ºó½ÓͨµçÔ´
D£®ÖØ´¸ÏÂÂäʱÊܵ½µÄ×èÁ¦¹ý´ó

£¨2£©ÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹Ü£¬¹Ü³¤Ô¼50cm¡¢µç×èԼΪ10¦¸£¬ÏÖÐè²â¶¨ËüµÄÄÚ¾¶d£¬µ«ÒòÆäÄÚ¾¶½ÏС£¬ÎÞ·¨ÓÃÓα꿨³ßÖ±½Ó²âÁ¿£®ÒÑÖªÕâÖÖ½ðÊôµÄµç×èÂÊΪ¦Ñ£®ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º
A£®ÀåÃ׿̶ȳߣ»   B£®ºÁÃ׿̶ȳߣ»
C£®ÂÝÐý²â΢Æ÷£»   D£®µçÁ÷±í£¨Á¿³Ì300mA£¬ÄÚ×èÔ¼l¦¸£©£»
E£®µçÁ÷±í£¨Á¿³Ì3A£¬ÄÚ×èÔ¼0£®l¦¸£©¡±£»   F£®µçѹ±í£¨Á¿³Ì3V£¬ÄÚ×èÔ¼6k¦¸£©£»
G£®»¬¶¯±ä×èÆ÷£¨×î´ó×èÖµ1k¦¸£¬¶î¶¨µçÁ÷0.5A£©£»
H£®»¬¶¯±ä×èÆ÷£¨×î´ó×èÖµ5¦¸£¬¶î¶¨µçÁ÷2A£©£»
L£®Ðîµç³Ø£¨µç¶¯ÊÆ6V£¬ÄÚ×è0.05¦¸£©£»J£®¿ª¹ØÒ»¸ö¼°´ø¼Ð×ӵĵ¼ÏßÈô¸É£®
ÇëÉè¼ÆÒ»¸öʵÑé·½°¸£¬ÒªÇóʵÑéÎó²îС£¬±ãÓÚµ÷½Ú£®»Ø´ðÏÂÁÐÎÊÌ⣺
¢ÙʵÑéÖÐÓ¦²âÎïÀíÁ¿µÄÃû³Æ¼°·ûºÅÊÇ
½ðÊô¹ÜµÄ³¤¶ÈL¡¢Í⾶D¡¢¼ÓÔÚ¹ÜÁ½¶ËµÄµçѹU¡¢Í¨¹ý¹ÜµÄµçÁ÷Ç¿¶ÈI£®
½ðÊô¹ÜµÄ³¤¶ÈL¡¢Í⾶D¡¢¼ÓÔÚ¹ÜÁ½¶ËµÄµçѹU¡¢Í¨¹ý¹ÜµÄµçÁ÷Ç¿¶ÈI£®
£»
¢ÚӦѡÓõÄʵÑéÆ÷²ÄÓÐ
B¡¢C¡¢D¡¢F¡¢H¡¢I¡¢J
B¡¢C¡¢D¡¢F¡¢H¡¢I¡¢J
£»£¨Ìî×Öĸ£©
¢ÛÔÚͼ2ËùʾµÄ·½¿òÖл­³öʵÑéµç·ͼ£»
¢Ü°´ÕÕÄãÉè¼ÆµÄµç·ͼ½«Í¼2ÖÐËùʾÒÇÆ÷Á¬³ÉʵÑéµç·£»
¢ÝÓòâµÃµÄÎïÀíÁ¿ºÍÒÑÖªÁ¿Ð´³ö¼ÆËã½ðÊô¹ÜÄÚ¾¶dµÄ±í´ïʽΪd=
d=
D2-
4¦ÑLI
¦ÐU
d=
D2-
4¦ÑLI
¦ÐU
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹ÜÏߣ¨ºá½ØÃæÊÇÔ²»·ÐΣ©£¬³¤Ô¼50cm£¬µç×èԼΪ80¦¸£¬ÕâÖÖ½ðÊôµÄµç×èÂÊΪ¦Ñ£¬ÏÖÒª²â¶¨ËüµÄÄÚ¾¶d£¬ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º
A£®ÀåÃ׿̶ȳߠ   B£®ºÁÃ׿̶ȳߠ   C£®ÂÝÐý²â΢Æ÷     D£®µçÁ÷±í£¨600mA£¬2¦¸£©
E£®µçÁ÷±í£¨60mA£¬4¦¸£©   F£®µçѹ±í£¨3V£¬1K¦¸£©     G£®±ä×èÏ䣨0-999.9¦¸£¬0.2A£©
H£®»¬¶¯±ä×èÆ÷£¨10¦¸£¬2A£©    I£®Ðîµç³Ø£¨6V£¬0.05¦¸£©   J£®¿ª¹ØÒ»¸ö¼°µ¼ÏßÈô¸É
£¨1£©ÔÚ·½¿òÖл­³öʵÑéµç·ԭÀíͼ£»
£¨2£©Ó¦Ñ¡ÓõÄʵÑéÆ÷²ÄÓУ¨Ö»Ìîд×Öĸ´úºÅ£©£º
 
£»
£¨3£©ÊµÑéÖÐÓ¦²âÁ¿µÄÎïÀíÁ¿¼°·ûºÅÊÇ£º
 

£¨4£©ÓüºÖªÎïÀíÁ¿ºÍ²âµÃµÄÎïÀíÁ¿±íʾ½ðÊôϸ¹ÜµÄÄÚ¾¶d=
 
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹ÜÏߣ¬³¤Ô¼50cm£¬µç×èԼΪ40¦¸£¬ÏÖÐè²â¶¨ËüµÄÄÚ¾¶d£¬ÒÑÖªÕâÖÖ½ðÊôµÄµç×èÂÊΪp£¬ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º
A¡¢ÀåÃ׿̶ȳߠ   F¡¢µçѹ±í£¨3V£¬6K¦¸£©
B¡¢ºÁÃ׿̶ȳߠ   C¡¢±ä×èÏ䣨0¡«999.9¦¸£¬0.2A£©
C¡¢ÂÝÐý²â΢Æ÷    H¡¢»¬¶¯±ä×èÆ÷£¨10¦¸£¬2A£©
D¡¢µçÁ÷±í£¨300mA£¬10¦¸£©  ¹¤¡¢Ðîµç³Ø£¨6V£¬0.05¦¸£©
E¡¢µçÁ÷±í£¨3A£¬0.1¦¸£©    J¡¢¿ª¹ØÒ»¸ö¼°µ¼ÏßÈô¸É
ÇëÉè¼ÆÒ»¸öʵÑé·½°¸£¬»Ø´ðÏÂÃæÎÊÌâ
£¨1£©ÔÚ·½¿òÖл­³öʵÑéµç·ԭÀíͼ£»
£¨2£©Ó¦Ñ¡ÓõÄʵÑéÆ÷²ÄÓУ¨Ö»Ìîд×Öĸ´úºÅ£©£º
 
£»
£¨3£©ÊµÑéÖÐÓ¦²âÁ¿µÄÃû³Æ¼°·ûºÅÊÇ£º
 
£»
£¨4£©ÓÃÒÑÖªÎïÀíÁ¿ºÍ²âµÃµÄÎïÀíÁ¿ÍƵ¼³ö¼ÆËã½ðÊôϸ¹ÜÄÚ¾¶dµÄ±í´ïʽ£¨Ð´³öÍƵ¼¹ý³Ì£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹ÜÏߣ¬³¤Ô¼50 cm£¬µç×èԼΪ40 ¦¸.ÏÖÐè²âËüµÄÄÚ¾¶d£¬ÒÑÖªÕâÖÖ½ðÊôµÄµç×èÂÊΪ¦Ñ£¬ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º

A.ÀåÃ׿̶ȳߠ                              B.ºÁÃ׿̶ȳß

C.ÂÝÐý²â΢Æ÷                               D.µçÁ÷±í(300 mA£¬10 ¦¸)

E.µçÁ÷±í(3 A£¬0.1 ¦¸)                        F.µçѹ±í(3 V£¬6 k¦¸)

G.±ä×èÏä(0¡ª999.9 ¦¸£¬0.2 A)                  H.»¬¶¯±ä×èÆ÷(10 ¦¸£¬2 A)

I.Ðîµç³Ø(6 V£¬0.05 ¦¸)                        J.¿ª¹ØÒ»¸ö¼°µ¼ÏßÈô¸É

ÇëÉè¼ÆÒ»¸öʵÑé·½°¸£¬»Ø´ðÏÂÃæÎÊÌ⣺

(1)»­³öʵÑéµç·ԭÀíͼ£»

(2)ӦѡÓõÄʵÑéÆ÷²ÄÓÐ(Ö»Ìîд×Öĸ´úºÅ)£º__________£»

(3)ʵÑéÖÐÓ¦²âÁ¿µÄÃû³Æ¼°·ûºÅÊÇ£º___________£»

(4)ÓÃÒÑÖªÎïÀíÁ¿ºÍ²âµÃµÄÎïÀíÁ¿ÍƵ¼³ö¼ÆËã½ðÊôϸ¹ÜÄÚ¾¶dµÄ±í´ïʽ(д³öÍƵ¼¹ý³Ì).

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨17·Ö£©

£¨1£©£¨8·Ö£©Ïñ´òµã¼ÆʱÆ÷Ò»Ñù£¬¹âµç¼ÆʱÆ÷Ò²ÊÇÒ»ÖÖÑо¿ÎïÌåÔ˶¯Çé¿öµÄ³£ÓüÆʱÒÇÆ÷£¬Æä½á¹¹Èçͼ¼×Ëùʾ£¬a¡¢b·Ö±ðÊǹâµçÃŵļ¤¹â·¢ÉäºÍ½ÓÊÕ×°Ö㬵±ÓÐÎïÌå´Óa¡¢b¼äͨ¹ýʱ£¬¹âµç¼ÆʱÆ÷¾Í¿ÉÒÔÏÔʾÎïÌåµÄµ²¹âʱ¼ä£¨´ÓÔ˶¯Îï¿é¿ªÊ¼µ²×¡ab¼ä¹âÏßÖÁ½áÊøµÄʱ¼ä£©.ÏÖÀûÓÃÈçͼÒÒËùʾװÖòâÁ¿»¬¿éºÍ³¤1m×óÓÒµÄľ°å¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì.¡£Í¼ÖÐMNÊÇˮƽ×ÀÃ棬QÊÇľ°åÓë×ÀÃæµÄ½Ó´¥µã£¬1ºÍ2Êǹ̶¨ÔÚľ°åÉÏÊʵ±Î»ÖõÄÁ½¸ö¹âµçÃÅ£¬ÓëÖ®Á¬½ÓµÄÁ½¸ö¹âµç¼ÆʱÆ÷ûÓÐÔÚ1ºÍ2λÖû­³ö¡£´ËÍâÔÚľ°å¶¥¶ËµÄPµã»¹Ðü¹Ò×ÅÒ»¸öǦ´¸£¬Èû¬¿é´Óľ°åµÄ¶¥¶Ë»¬Ï£¬¹âµçÃÅ1¡¢2¸÷×ÔÁ¬½ÓµÄ¼ÆʱÆ÷ÏÔʾµÄµ²¹âʱ¼ä·Ö±ðΪt1=5.0¡Á10£­2sºÍt2=2.0¡Á10£­2s¡£ÓÃÂÝÐý²â΢Æ÷²âÁ¿Ð¡»¬¿éµÄ¿í¶Èd£¬Èçͼ±ûËùʾ.

¢ÙÓÉͼ±û¶Á³ö»¬¿éµÄ¿í¶Èd=           mm£»

¢Ú»¬¿éͨ¹ý¹âµçÃÅ1µÄ˲ʱËÙ¶Èv1µÄ±í´ïʽΪ        £¬»¬¶¯Í¨¹ý¹âµçÃÅ2µÄËÙ¶Èv2µÄ±í´ïʽΪ        £¨ÓÃ×Öĸd¡¢t1¡¢t2±íʾ£©£»

¢ÛÈô½öÌṩһ°ÑÃ׳ߣ¬ÒÑÖªµ±µØµÄÖØÁ¦¼ÓËÙΪg£¬ÎªÍê³É²âÁ¿£¬³ýÁËÑо¿v1¡¢v2ºÍÁ½¸ö¹âµçÃÅÖ®¼äµÄ¾àÀëLÍ⣬»¹Ðè²âÁ¿µÄÎïÀíÁ¿ÊÇ                                           

                                         £¨ËµÃ÷¸÷ÎïÀíÁ¿µÄÒâÒå¼°×Öĸ£©£»

¢Üд³öÓâÛÖи÷Á¿Çó½â¶¯Ä¦²ÁÒòÊýµÄ±í´ïʽ                  £¨ÓÃ×Öĸ±íʾ£©¡£

£¨2£©£¨9·Ö£©ÓÐÒ»¸ùºÜϸµÄ¾ùÔÈ¿ÕÐĽðÊô¹Ü£¬¹Ü³¤Ô¼50cm¡¢µç×èԼΪ15£¬ÏÖÐè²â¶¨ËüµÄÄÚ¾¶d£¬µ«ÒòÆäÄÚ¾¶½ÏС£¬ÎÞ·¨ÓÃÓα꿨³ßÖ±½Ó²âÁ¿¡£ÒÑÖªÕâÖÖ½ðÊôµÄµç×èÂÊΪ¡£ÊµÑéÊÒÖпÉÒÔÌṩÏÂÁÐÆ÷²Ä£º

A£®ºÁÃ׿̶ȳߣ»

B£®ÂÝÐý²â΢Æ÷£»

C£®µçÁ÷±í£¨Á¿³Ì300mA£¬ÄÚ×èÔ¼1£©£»

D£®µçÁ÷±í£¨Á¿³Ì3A£¬ÄÚ×èÔ¼0.1£©£»

E£®µçѹ±í£¨Á¿³Ì3V£¬ÄÚ×èÔ¼6k£©£º

F£®»¬¶¯±ä×èÆ÷£¨×î´ó×èÖµlk£¬¶î¶¨µçÁ÷0.5A£©£»

G£®»¬¶¯±ä×èÆ÷£¨×î´ó×èÖµ5£¬¶î¶¨µçÁ÷2A£©£»

H£®Ðîµç³Ø£¨µç¶¯ÊÆ6V£¬ÄÚ×è0.05£©£»

J£®¿ª¹ØÒ»¸ö¼°´ø¼Ð×ӵĵ¼ÏßÈô¸É¡£

ÇëÉè¼ÆÒ»¸öʵÑé·½°¸£¬ÒªÇóʵÑéÎó²î¾¡¿ÉÄÜС£¬²¢Äܲâ³ö¶à×éÊý¾Ý£¬±ãÓÚµ÷½Ú¡£»Ø´ðÏÂÁÐÎÊÌ⣺

¢ÙʵÑéÖÐÓ¦²âÎïÀíÁ¿µÄÃû³Æ¼°·ûºÅÊÇ                                                                                          £»

¢ÚµçÁ÷±íӦѡÔñ        £¬»¬¶¯±ä×èÆ÷ӦѡÔñ        £»£¨Ìî×Öĸ´úºÅ£©

¢ÛÇëÄãÉè¼ÆÒ»¸öµç·ͼ½«Æä»­ÔÚÉÏÃæµÄ·½¿òÖУ»

¢ÜÓòâµÃµÄÎïÀíÁ¿¡¢ÒÑÖªÁ¿µÄ×Öĸд³ö¼ÆËã½ðÊô¹ÜÄÚ¾¶µÄ±í´ïʽΪ=           ¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸