ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬ÊúֱƽÐÐÕý¶Ô·ÅÖõĴøµç½ðÊô°åA¡¢B£¬B°åÖÐÐĵÄС¿×ÕýºÃλÓÚƽÃæÖ±½Ç×ø±êϵxoyµÄOµã£»yÖáÑØÊúÖ±·½Ïò£»ÔÚx>0µÄÇøÓòÄÚ´æÔÚÑØyÖáÕý·½ÏòµÄÔÈÇ¿µç³¡£¬µç³¡Ç¿¶È´óСΪ£»±ÈºÉΪ1£®0¡Á105C/kgµÄ´øÕýµçµÄÁ£×ÓP´ÓA°åÖÐÐÄO/´¦¾²Ö¹ÊÍ·Å£¬ÆäÔ˶¯¹ì¼£Ç¡ºÃ¾­¹ýM£¨£¬1£©µã£»Á£×ÓPµÄÖØÁ¦²»¼Æ£¬ÊÔÇó£º

£¨1£©½ðÊô°åABÖ®¼äµÄµçÊƲîUAB£»

£¨2£©ÈôÔÚÁ£×ÓP¾­¹ýOµãµÄͬʱ£¬ÔÚyÖáÓÒ²àÔÈÇ¿µç³¡ÖÐijµãÓɾ²Ö¹ÊÍ·ÅÁíÒ»´øµç΢Á£Q£¬Ê¹PQÇ¡ÄÜÔ˶¯ÖÐÏàÅö£»¼ÙÉèQµÄÖÊÁ¿ÊÇPµÄ2±¶¡¢´øµçÇé¿öÓëPÏàͬ£»QµÄÖØÁ¦¼°PQÖ®¼äµÄÏ໥×÷ÓÃÁ¦¾ùºöÂÔ²»¼Æ£»ÇóÁ£×ÓQËùÓÐÊͷŵãµÄ¼¯ºÏ£»

¡¾´ð°¸¡¿£¨1£©1000V£¨2£©ÆäÖÐx>0

¡¾½âÎö¡¿

ÊÔÌâ·ÖÎö£º£¨1£©ÉèÁ£×ÓPµÄÖÊÁ¿Îªm¡¢´øµçÁ¿Îªq£¬´ÓOµã½øÈëÔÈÇ¿µç³¡Ê±µÄËٶȴóСΪv0£»ÓÉÌâÒâ¿ÉÖª£¬Á£×ÓPÔÚyÖáÓÒ²àÔÈÇ¿µç³¡ÖÐ×öÀàƽÅ×Ô˶¯£»Éè´ÓOµãÔ˶¯µ½M£¨£¬1£©µãÀúʱΪt0£¬ÓÉÀàƽÅ×Ô˶¯¿ÉµÃ£º

½âµÃ£º

ÔÚ½ðÊô°åABÖ®¼ä£¬Óɶ¯Äܶ¨Àí£º

½âµÃ£ºUAB=1000V

£¨2£©ÉèPQÔÚÓÒ²àµç³¡ÖÐÔ˶¯µÄ¼ÓËٶȷֱðΪa1¡¢a2£»QÁ£×Ó´Ó×ø±êN£¨x£¬y£©µãÊͷź󣬾­Ê±¼ätÓëÁ£×ÓPÏàÓö£»ÓÉÅ£¶ÙÔ˶¯¶¨Âɼ°ÀàƽÅ×Ô˶¯µÄ¹æÂɺͼ¸ºÎ¹Øϵ¿ÉµÃ£º

¶ÔÓÚP:Eq=ma1

¶ÔÓÚQ:Eq=2ma2

x=v0t

½âµÃ£º£¬ÆäÖÐx>0

¼´Á£×ÓQÊͷŵãN£¨x£¬y£©×ø±êÂú×ãµÄ·½³ÌΪ£ºÆäÖÐx>0

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø