ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬Ôڹ̶¨µÄÆø¸×AºÍBÖзֱðÓûîÈû·â±ÕÁËÒ»¶¨ÖÊÁ¿µÄÀíÏëÆøÌ壬»îÈûÃæ»ýÖ®±ÈSA¡ÃSB£½1¡Ã3£¬Á½»îÈûÓÉ´©¹ýBµ×²¿µÄ¸ÕÐÔϸ¸ËÏàÁ¬£¬¿ÉÑØˮƽ·½ÏòÎÞĦ²Á»¬¶¯£¬Á½¸öÆø¸×¶¼²»Â©Æø¡£³õʼʱ»îÈû´¦ÓÚƽºâ״̬£¬A¡¢BÖÐÆøÌåµÄÌå»ý¾ùΪV0£¬ÇÒζÈÏàͬ£¬AÖÐÆøÌåѹǿpA£½1.6p0£¬p0ÊÇÆø¸×ÍâµÄ´óÆøѹǿ¡£
¢ÙÇó³õʼʱBÖÐÆøÌåµÄѹǿpB£»
¢ÚÏÖ¶ÔAÖÐÆøÌå¼ÓÈÈ£¬Ê¹ÆäÖÐÆøÌåµÄѹǿÉýµ½pA¡ä£½2.5p0£¬Í¬Ê±±£³ÖBÖÐÆøÌåµÄζȲ»±ä£¬Çó»îÈûÖØдﵽƽºâ״̬ʱAÖÐÆøÌåÌå»ýVA¡ä¡£
¡¾´ð°¸¡¿£¨1 £© £¨2£©
¡¾½âÎö¡¿£¨1£©³õʼʱ»îÈûƽºâ£¬¶Ô»îÈû£¬ÓÉƽºâÌõ¼þµÃ£º
pASA+pBSB=p0£¨SA+SB£©£¬ÒÑÖª£ºSB=3SA£¬pA=1.6p0£¬½âµÃ£ºpB=0.8p0£»
£¨2£©Ä©×´Ì¬»îÈûƽºâ£¬ÓÉƽºâÌõ¼þµÃ£º
pA¡äSA+pB¡äSB=p0£¨SA+SB£©£¬½âµÃ£ºpB¡ä=0.5p0£¬
BÖÐÆøÌå³õ¡¢Ä©Ì¬Î¶ÈÏàµÈ£¬ÆøÌå·¢ÉúµÈα仯£¬
Óɲ£Òâ¶ú¶¨ÂɵãºpBVB=pB¡äVB¡ä£¬
¼´£º0.8p0V0=0.5p0¡äVB¡ä£¬½âµÃ£ºVB¡ä=1.6V0£¬
ÉèAÖÐÆøÌåĩ̬µÄÌå»ýΪVA¡ä£¬ÒòΪÁ½»îÈûÒƶ¯µÄ¾àÀëÏàµÈ£¬
¹ÊÓУº £¬