ÌâÄ¿ÄÚÈÝ
£¨1£©¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬ÓÉÂåÂ××ÈÁ¦ÌṩÏòÐÄÁ¦£¬
ÔòÓУºqvB=
mv2 |
r |
µÃr=
mv |
qB |
£¨2£©¸ù¾Ý×óÊÖ¶¨Ôò£¬ÒÀ¾Ý¼¸ºÎÌØÐÔ£¬×÷ͼ£¬
ÔòÓиÃÇøÓòµÄÃæ»ý£ºS=
1 |
2 |
1 |
4 |
´úÈëÊý¾Ý¿É½âµÃ£ºS=
3 |
2 |
mv |
Bq |
´ð£º£¨1£©´øµçÁ£×Ó½øÈë´Å³¡×öÔ²ÖÜÔ˶¯µÄ°ë¾¶µÃr=
mv |
qB |
£¨2£©ÓÃÔ²¹æºÍÖ±³ßÔÚͼÖл³ö´øµçÁ£×Ó¿ÉÄܾ¹ýµÄÇøÓò£¨ÓÃбÏß±íʾ£©²¢Çó³ö¸ÃÇøÓòµÄÃæ»ýS=
3 |
2 |
mv |
Bq |
£¨1£©¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬ÓÉÂåÂ××ÈÁ¦ÌṩÏòÐÄÁ¦£¬
ÔòÓУºqvB=
mv2 |
r |
µÃr=
mv |
qB |
£¨2£©¸ù¾Ý×óÊÖ¶¨Ôò£¬ÒÀ¾Ý¼¸ºÎÌØÐÔ£¬×÷ͼ£¬
ÔòÓиÃÇøÓòµÄÃæ»ý£ºS=
1 |
2 |
1 |
4 |
´úÈëÊý¾Ý¿É½âµÃ£ºS=
3 |
2 |
mv |
Bq |
´ð£º£¨1£©´øµçÁ£×Ó½øÈë´Å³¡×öÔ²ÖÜÔ˶¯µÄ°ë¾¶µÃr=
mv |
qB |
£¨2£©ÓÃÔ²¹æºÍÖ±³ßÔÚͼÖл³ö´øµçÁ£×Ó¿ÉÄܾ¹ýµÄÇøÓò£¨ÓÃбÏß±íʾ£©²¢Çó³ö¸ÃÇøÓòµÄÃæ»ýS=
3 |
2 |
mv |
Bq |
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿