¾«Ó¢¼Ò½ÌÍøÈçͼËùʾ£¬ÎªÄ³ÖÖÐÂÐÍÉ豸ÄÚ²¿µç¡¢´Å³¡·Ö²¼Çé¿öͼ£®×ÔÉ϶øÏ·ÖΪ¢ñ¡¢¢ò¡¢¢óÈý¸öÇøÓò£®ÇøÓò¢ñ¿í¶ÈΪd1£¬·Ö²¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E1£»ÇøÓò¢ò¿í¶ÈΪd2£¬·Ö²¼Óд¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B1£»¿í¶È¿Éµ÷µÄÇøÓò¢óÖзֲ¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E2ºÍ´¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B2£®ÏÖÔÚÓÐһȺÖÊÁ¿ºÍ´øµçÁ¿¾ù²»Í¬µÄ´øµçÁ£×Ó´ÓÇøÓò¢ñÉϱßÔµµÄ×¢Èë¿×Aµã±»×¢È룬´Ó¾²Ö¹¿ªÊ¼Ô˶¯£¬È»ºóÏà¼Ì½øÈë¢ò¡¢¢óÁ½¸öÇøÓò£¬Âú×ãÒ»¶¨Ìõ¼þµÄÁ£×Ó½«»Øµ½ÇøÓò¢ñ£¬ÆäËûÁ£×ÓÔò´ÓÇøÓò¢ó·É³ö£®ÈýÇøÓò¶¼×ã¹»³¤£¬Á£×ÓµÄÖØÁ¦²»¼Æ£®
ÒÑÖªÄÜ·É»ØÇøÓò¢ñµÄ´øµçÁ£×ÓµÄÖÊÁ¿Îªm=6.4¡Á10-27©K£¬´øµçÁ¿Îªq=3.2¡Á10-19C£¬ÇÒd1=10cm£¬d2=5
2
cm£¬d3£¾10cm£¬E1=E2=40v/m£¬B1=4¡Á10-3T£¬B2=2
2
¡Á10-3T£®ÊÔÇó£º
£¨1£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËٶȣ®  
£¨2£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȣ®
£¨3£©¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀ룮
·ÖÎö£ºÁ£×ÓÔڵ糡E1ÖÐ×öÔȼÓËÙÖ±ÏßÔ˶¯£¬¸ù¾Ý¶¯Äܶ¨ÀíÁ£×Ó¸Õ½øÈë´Å³¡B1ʱµÄËٶȴóС£®Á£×Ó½øÈë´Å³¡B1ÖУ¬ÓÉÂåÂ××ÈÁ¦ÌṩÏòÐÄÁ¦£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÇó³öÁ£×ӹ켣°ë¾¶£¬Óɼ¸ºÎ֪ʶµÃ³öÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȷ½Ïò£®Á£×Ó½øÈë¢óÇøÓòʱ£¬Êܵ½µç³¡Á¦ºÍÂåÂ××ÈÁ¦£¬²ÉÓÃÔ˶¯µÄ·Ö½â·¨£¬½«Á£×ÓµÄËٶȷֽâΪˮƽºÍÊúÖ±Á½¸ö·½Ïò£¬·Ö±ðÇó³öÕâÁ½¸ö·½ÏòËٶȶԵÄÂåÂ××ÈÁ¦£¬·ÖÎöÁ£×Óˮƽ·½ÏòµÄÔ˶¯Çé¿ö£ºÔÈËÙÖ±ÏßÔ˶¯£®·ÖÎöÓëÊúÖ±ËٶȶÔÓ¦µÄÂåÂ××ÈÁ¦£¬·ÖÎöµÃÖªÁ£×Ó×öÔÈËÙÔ²ÖÜÔ˶¯£¬¸ù¾ÝÔÈËÙÖ±ÏßÔ˶¯ºÍÔÈËÙÔ²ÖÜÔ˶¯µÄºÏ³É£¬Óɼ¸ºÎ֪ʶÇó³öÄÜ·É»ØÇøÓò¢ñµÄÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñÉϱßԵʱÀëAµÄ¾àÀ룮
½â´ð£º¾«Ó¢¼Ò½ÌÍø½â£º£¨1£©Á£×ÓÔڵ糡E1ÖÐÔ˶¯£¬ÓÉqE1d1=
1
2
mv2
µÃ£ºv=2¡Á104m/s·½ÏòÊúÖ±ÏòÏÂ
£¨2£©Á£×ÓÔÚB1ÖÐƫת£¬ËٶȴóСÈÔΪ
v=2¡Á104m/s
ÓÉqB1v=m
v2
R1

¿ÉµÃ·½Ïò£ºsin¦È=
d2
R1
£¬
´úÈëÊý¾ÝµÃ£º¦È=45¡ãËùÒÔ´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȷ½ÏòÓëXÖáÕýÏò45¡ã½Ç£®
£¨3£©Éè¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òÒ²¼´½øÈëÇøÓò¢óʱµÄËٶȷֽâΪvx¡¢vy£¬Ôò£º
vx=vy=vsin45¡ã=
2
¡Á104m/s
ËùÒÔ£ºqB2vx=qB2vy=1.28¡Á10-17N
qE2=1.28¡Á10-17N
qE2=qB2vx
ËùÒÔ´øµçÁ£×ÓÔÚÇøÓò¢óÖÐÔ˶¯¿ÉÊÓΪÑØXÖáÕýÏòµÄËÙ¶ÈΪvxµÄÔÈËÙÖ±ÏßÔ˶¯ºÍÒÔËÙÂÊΪvyÒÔ¼°¶ÔÓ¦ÂåÂØ×ÈÁ¦qB2V×÷ΪÏòÐÄÁ¦µÄÔÈËÙÔ²ÖÜÔ˶¯µÄµþ¼Ó£¬¹ìµÀÈçͼËùʾ£º
R2=
mvy
qB2
=10cm
T=
2¦Ðm
qB2
=
2
¦Ð
¡Á10-5S
¸ù¾ÝÔ˶¯µÄ¶Ô³ÆÐÔ¿ÉÖª£¬´øµçÁ£×ӻص½ÇøÓò¢ñµÄÉϱßÔµµÄBµã£¬
¾àAµãµÄ¾àÀëΪ£ºd=2[£¨1-cos¦È£©R1+R2+vx
T
4
]´úÈëÊý¾Ý¿ÉµÃ£º
d=40+10¦Ð-10
2
=57.26cm
´ð£º£¨1£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËÙ¶ÈΪ2¡Á104m/s£¬·½ÏòÊúÖ±ÏòÏ£®
  £¨2£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËÙ¶ÈΪ2¡Á104m/s£¬·½ÏòÓëXÖáÕýÏò45¡ã½Ç£®
£¨3£©¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀëΪ57.26cm£®
µãÆÀ£º±¾ÌâÁ£×ÓÔڵ糡E1ÖмÓËÙ£¬¸ù¾Ý¶¯Äܶ¨ÀíÇóËٶȣ¬Ôڴų¡B1ÖÐƫת£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÇó°ë¾¶£¬»­¹ì¼££¬¶¼Êdz£ÓÃ˼·£¬ÄѵãÊÇÑо¿µç³¡E2ºÍ´Å³¡B2µþ¼ÓÇøÓò£¬²ÉÓÃÔ˶¯µÄ·Ö½â·¨Ñо¿Á£×ÓµÄÔ˶¯£¬²»ÈÝÒ×Ïëµ½£¬ÓнϴóµÄÄѶȣ®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼËùʾ£¬ÎªÄ³ÖÖÐÂÐÍÉ豸ÄÚ²¿µç¡¢´Å³¡·Ö²¼Çé¿öͼ¡£×ÔÉ϶øÏ·ÖΪ¢ñ¡¢¢ò¡¢¢óÈý¸öÇøÓò¡£ÇøÓò¢ñ¿í¶ÈΪd1£¬·Ö²¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E1£»ÇøÓò¢ò¿í¶ÈΪd2£¬·Ö²¼Óд¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B1£»¿í¶È¿Éµ÷µÄÇøÓò¢óÖзֲ¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E2ºÍ´¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B2¡£ÏÖÔÚÓÐһȺÖÊÁ¿ºÍ´øµçÁ¿¾ù²»Í¬µÄ´øµçÁ£×Ó´ÓÇøÓò¢ñÉϱßÔµµÄ×¢Èë¿×Aµã±»×¢È룬´Ó¾²Ö¹¿ªÊ¼Ô˶¯£¬È»ºóÏà¼Ì½øÈë¢ò¡¢¢óÁ½¸öÇøÓò£¬Âú×ãÒ»¶¨Ìõ¼þµÄÁ£×Ó½«»Øµ½ÇøÓò¢ñ£¬ÆäËûÁ£×ÓÔò´ÓÇøÓò¢ó·É³ö¡£ÈýÇøÓò¶¼×ã¹»³¤£¬Á£×ÓµÄÖØÁ¦²»¼Æ¡£ÒÑÖªÄÜ·É»ØÇøÓò¢ñµÄ´øµçÁ£×ÓµÄÖÊÁ¿Îªm=6.4¡Á10-27©K£¬´øµçÁ¿Îª£ñ=3.2¡Á10-19C£¬ÇÒd1=10cm£¬d2=5©M£¬d3©ƒ10©M£¬E1=E2=40v/m£¬B1=4¡Á10-3T£¬B2=2¡Á10-3T¡£ÊÔÇó£º

£¨1£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËٶȡ£  £¨2£©¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȡ£

£¨3£©¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀë¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

(11·Ö)(2009¡¤°²»ÕÊ¡ÁùУÁª¿¼)ÈçͼËùʾ£¬ÎªÄ³ÖÖÐÂÐÍÉ豸ÄÚ²¿µç¡¢´Å³¡·Ö²¼Çé¿öͼ£®×ÔÉ϶øÏ·ÖΪ¢ñ¡¢¢ò¡¢¢óÈý¸öÇøÓò£®ÇøÓò¢ñ¿í¶ÈΪd1£¬·Ö²¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E1£»ÇøÓò¢ò¿í¶ÈΪd2£¬·Ö²¼Óд¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B1£»¿í¶È¿Éµ÷µÄÇøÓò¢óÖзֲ¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E2ºÍ´¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B2.ÏÖÔÚÓÐһȺÖÊÁ¿ºÍ´øµçºÉÁ¿¾ù²»Í¬µÄ´øÕýµçÁ£×Ó´ÓÇøÓò¢ñÉϱßÔµµÄ×¢Èë¿×Aµã±»×¢È룬´Ó¾²Ö¹¿ªÊ¼Ô˶¯£¬È»ºóÏà¼Ì½øÈë¢ò¡¢¢óÁ½¸öÇøÓò£¬Âú×ãÒ»¶¨Ìõ¼þµÄÁ£×Ó½«»Øµ½ÇøÓò¢ñ£¬ÆäËûÁ£×ÓÔò´ÓÇøÓò¢ó·É³ö£®ÈýÇøÓò¶¼×ã¹»³¤£¬Á£×ÓµÄÖØÁ¦²»¼Æ£®

ÒÑÖªÄÜ·É»ØÇøÓò¢ñµÄ´øµçÁ£×ÓµÄÖÊÁ¿Îªm£½6.4¡Á10£­27kg£¬´øµçºÉÁ¿Îªq£½3.2¡Á10£­19C£¬ÇÒd1£½10cm£¬d2£½5cm£¬d3>10cm£¬E1£½E2£½40V/m£¬B1£½4¡Á10£­3T£¬B2£½2¡Á10£­3T.

ÊÔÇó£º

(1)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËٶȣ®

(2)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȣ®

(3)¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀ룮

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011-2012ѧÄêÈ˽̰æ¸ßÈýÎïÀí´Å³¡×¨ÏîѵÁ· ÌâÐÍ£º¼ÆËãÌâ

(11·Ö)(2009¡¤°²»ÕÊ¡ÁùУÁª¿¼)ÈçͼËùʾ£¬ÎªÄ³ÖÖÐÂÐÍÉ豸ÄÚ²¿µç¡¢´Å³¡·Ö²¼Çé¿öͼ£®×ÔÉ϶øÏ·ÖΪ¢ñ¡¢¢ò¡¢¢óÈý¸öÇøÓò£®ÇøÓò¢ñ¿í¶ÈΪd1£¬·Ö²¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E1£»ÇøÓò¢ò¿í¶ÈΪd2£¬·Ö²¼Óд¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B1£»¿í¶È¿Éµ÷µÄÇøÓò¢óÖзֲ¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E2ºÍ´¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B2.ÏÖÔÚÓÐһȺÖÊÁ¿ºÍ´øµçºÉÁ¿¾ù²»Í¬µÄ´øÕýµçÁ£×Ó´ÓÇøÓò¢ñÉϱßÔµµÄ×¢Èë¿×Aµã±»×¢È룬´Ó¾²Ö¹¿ªÊ¼Ô˶¯£¬È»ºóÏà¼Ì½øÈë¢ò¡¢¢óÁ½¸öÇøÓò£¬Âú×ãÒ»¶¨Ìõ¼þµÄÁ£×Ó½«»Øµ½ÇøÓò¢ñ£¬ÆäËûÁ£×ÓÔò´ÓÇøÓò¢ó·É³ö£®ÈýÇøÓò¶¼×ã¹»³¤£¬Á£×ÓµÄÖØÁ¦²»¼Æ£®
ÒÑÖªÄÜ·É»ØÇøÓò¢ñµÄ´øµçÁ£×ÓµÄÖÊÁ¿Îªm£½6.4¡Á10£­27kg£¬´øµçºÉÁ¿Îªq£½3.2¡Á10£­19C£¬ÇÒd1£½10cm£¬d2£½5cm£¬d3>10cm£¬E1£½E2£½40V/m£¬B1£½4¡Á10£­3T£¬B2£½2¡Á10£­3T.

ÊÔÇó£º
(1)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËٶȣ®
(2)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȣ®
(3)¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀ룮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012½ìÈ˽̰æ¸ßÈýÎïÀí´Å³¡×¨ÏîѵÁ· ÌâÐÍ£ºÑ¡ÔñÌâ

(11·Ö)(2009¡¤°²»ÕÊ¡ÁùУÁª¿¼)ÈçͼËùʾ£¬ÎªÄ³ÖÖÐÂÐÍÉ豸ÄÚ²¿µç¡¢´Å³¡·Ö²¼Çé¿öͼ£®×ÔÉ϶øÏ·ÖΪ¢ñ¡¢¢ò¡¢¢óÈý¸öÇøÓò£®ÇøÓò¢ñ¿í¶ÈΪd1£¬·Ö²¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E1£»ÇøÓò¢ò¿í¶ÈΪd2£¬·Ö²¼Óд¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B1£»¿í¶È¿Éµ÷µÄÇøÓò¢óÖзֲ¼ÓÐÑØÖ½ÃæÏòϵÄÔÈÇ¿µç³¡E2ºÍ´¹Ö±Ö½ÃæÏòÀïµÄÔÈÇ¿´Å³¡B2.ÏÖÔÚÓÐһȺÖÊÁ¿ºÍ´øµçºÉÁ¿¾ù²»Í¬µÄ´øÕýµçÁ£×Ó´ÓÇøÓò¢ñÉϱßÔµµÄ×¢Èë¿×Aµã±»×¢È룬´Ó¾²Ö¹¿ªÊ¼Ô˶¯£¬È»ºóÏà¼Ì½øÈë¢ò¡¢¢óÁ½¸öÇøÓò£¬Âú×ãÒ»¶¨Ìõ¼þµÄÁ£×Ó½«»Øµ½ÇøÓò¢ñ£¬ÆäËûÁ£×ÓÔò´ÓÇøÓò¢ó·É³ö£®ÈýÇøÓò¶¼×ã¹»³¤£¬Á£×ÓµÄÖØÁ¦²»¼Æ£®

ÒÑÖªÄÜ·É»ØÇøÓò¢ñµÄ´øµçÁ£×ÓµÄÖÊÁ¿Îªm£½6.4¡Á10£­27kg£¬´øµçºÉÁ¿Îªq£½3.2¡Á10£­19C£¬ÇÒd1£½10cm£¬d2£½5cm£¬d3>10cm£¬E1£½E2£½40V/m£¬B1£½4¡Á10£­3T£¬B2£½2¡Á10£­3T.

ÊÔÇó£º

(1)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢ñʱµÄËٶȣ®

(2)¸Ã´øµçÁ£×ÓÀ뿪ÇøÓò¢òʱµÄËٶȣ®

(3)¸Ã´øµçÁ£×ÓµÚÒ»´Î»Øµ½ÇøÓò¢ñµÄÉϱßԵʱÀ뿪AµãµÄ¾àÀ룮

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸