Question

1£®Ð¡Ã÷ÀûÓÃÈçͼËùʾµÄ×°ÖᰱȽϲ»Í¬ÎïÖʵÄÎüÈÈÄÜÁ¦¡±£®½«ÖÊÁ¿ÏàͬµÄ¼×¡¢ÒÒÁ½ÖÖÒºÌ壬·Ö±ðµ¹ÈëÏàͬµÄÉÕ±­ÖУ¬ÓÃÏàͬµÄµç¼ÓÈÈÆ÷¼ÓÈÈ£®Í¨¹ýʵÑ飬¼Ç¼Êý¾ÝÈç±íËùʾ£®

¼ÓÈÈʱ¼ä/min	0	1	2	3	4
¼×µÄζÈ/¡æ	30	34	38	42	46
ÒÒµÄζÈ/¡æ	22	30	38	46	54

£¨1£©Á½ÖÖÒºÌåµÄζȶ¼´ïµ½46¡æʱ£¬¼×£¨Ñ¡Ìî¡°¼×¡±»ò¡°ÒÒ¡±£©ÎüÊÕµÄÈÈÁ¿¶à£®
£¨2£©·ÖÎö±íÖÐÊý¾Ý£¬¿ÉµÃ³öµÄ½áÂÛÊÇ£ºÖÊÁ¿ÏàͬµÄ²»Í¬ÎïÖÊ£¬µ±Éý¸ßµÄζÈÏàͬʱ£¬ÎïÖÊÎüÊÕµÄÈÈÁ¿Ô½¶à£¨Ñ¡Ìî¡°¶à¡±»ò¡°ÉÙ¡±£©£¬ÎüÈÈÄÜÁ¦Ô½Ç¿£®ÓÉ´Ë¿ÉÖª£¬¼×£¨Ñ¡Ìî¡°¼×¡±»ò¡°ÒÒ¡±£©ÒºÌåµÄÎüÈÈÄÜÁ¦Ç¿£®
£¨3£©ÈôÆäÖÐÒ»ÖÖÒºÌåÊÇË®£¬¼ÓÈÈ4minʱ£¬µçÈÈÆ÷ÏûºÄÁË2.24¡Á10^-3kW•hµÄµçÄÜ£¬ÔòÉÕ±­ÄÚË®µÄÖÊÁ¿Îª0.12kg£®[c_Ë®=4.2¡Á10³J/£¨kg•¡æ£©£¬²»¼ÆÈÈËðʧ]£®

Answer 1

·ÖÎö £¨1£©ÓÃÏàͬµÄÈÈÔ´¶ÔÒºÌå¼ÓÈÈ£¬ÒºÌåÔÚÏàµÈʱ¼äÄÚÎüÊÕµÄÈÈÁ¿ÏàµÈ£»
£¨2£©·ÖÎöʵÑéÊý¾Ý£¬ÖÊÁ¿ÏàͬµÄ²»Í¬ÎïÖÊ£¬Éý¸ßÏàͬµÄζȣ¬¼ÓÈÈʱ¼ä²»Í¬£¬ËµÃ÷ÎüÊÕµÄÈÈÁ¿²»Í¬£¬¼ÓÈÈʱ¼ä³¤µÄÎüÊÕµÄÈÈÁ¿¶à£¬ÎüÈÈÄÜÁ¦Ç¿£»
£¨3£©ÈÈÁ¿µÄ¼ÆË㣺¼ÙÉèûÓÐÄÜÁ¿Ëðʧ£¬Ë®ÎüÊÕµÄÈÈÁ¿¸úÈÈË®Æ÷ÏûºÄµÄµçÄÜÊÇÏàµÈµÄ£¬ÓÉÈÈÁ¿¼ÆË㹫ʽQ=cm¡÷t¿ÉÇó³öË®µÄÖÊÁ¿£®

½â´ð ½â£º
£¨1£©ÓɱíÖÐʵÑéÊý¾Ý¿ÉÖª£¬´Ó¿ªÊ¼¼ÓÈȵ½46¡æ£¬¼×ÐèÒªµÄ¼ÓÈÈʱ¼ä³¤£¬ÒÒÐèÒªµÄ¼ÓÈÈʱ¼ä¶Ì£¬¼×ÎüÊÕµÄÈÈÁ¿´óÓÚÓëÒÒÎüÊÕµÄÈÈÁ¿£»
£¨2£©ÓɱíÖÐʵÑéÊý¾Ý¿ÉÖª£¬ÒºÌåÖÊÁ¿ºÍÉý¸ßµÄζÈÏàµÈ¶øÒºÌåÖÖÀ಻ͬ£¬¼×ÒºÌåµÄ¼ÓÈÈʱ¼ä±ÈÒÒÒºÌåµÄ¼ÓÈÈʱ¼ä³¤£¬¼×ÒºÌå±ÈÒÒÒºÌåÎüÊÕµÄÈÈÁ¿¶à£¬Óɴ˿ɵãºÒºÌåÎüÊÕÈÈÁ¿¶àÉÙÓëÒºÌåµÄÖÖÀàÓйأ¬¼×µÄÎüÈÈÄÜÁ¦¸üÇ¿£®
£¨3£©¼ÙÉèûÓÐÄÜÁ¿Ëðʧ£¬Ë®ÎüÊÕµÄÈÈÁ¿Q=W=2.24¡Á10^-3kW•h=8.064¡Á10³J£»
ÓɱíÖÐÊý¾Ý¿ÉÖª£¬Ë®¼ÓÈÈ4minÉý¸ßµÄζÈΪ16¡æ£¬
¸ù¾ÝQ=cm¡÷t¿ÉÖª£¬
Ë®µÄÖÊÁ¿ÊÇ£ºm=$\frac{Q}{c¡÷t}$=$\frac{8.064¡Á1{0}^{3}J}{4.2¡Á1{0}^{3}J£¨kg•¡æ£©¡Á16¡æ}$=0.12kg£®
¹Ê´ð°¸Îª£º£¨1£©¼×£»£¨2£©ÖÊÁ¿Ïàͬ£»¶à£»¼×£»£¨3£©0.12£®

µãÆÀ ±¾Ì⿼²éÁËʵÑé×¢ÒâÊÂÏʵÑéÊý¾Ý·ÖÎö£¬Ó¦ÓÿØÖƱäÁ¿·¨ÊÇÕýÈ·½âÌâµÄ¹Ø¼ü£¬ÊìÁ·Ó¦ÓÿØÖƱäÁ¿·¨¡¢·ÖÎö±íÖÐʵÑéÊý¾Ý¼´¿É½âÌ⣮