ÌâÄ¿ÄÚÈÝ
£¨2009?±±¾©£©Ð¡Àò¸ù¾ÝÁбíÖеÄÊý¾Ý£¬µÃ³öÒÔÏÂËĸö½áÂÛ£¬ÆäÖв»ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
|
·ÖÎö£º£¨1£©¾§ÌåÔÚÈÛµãʱ¿ÉÄÜÊǹÌ̬£¬¿ÉÄÜÊÇҺ̬£¬¿ÉÄÜÊǹÌÒº¹²´æ̬£»¸ßÓÚÈÛµãʱÊÇҺ̬£»µÍÓÚÈÛµãÊǹÌ̬£®
£¨2£©¸ù¾Ý¦Ñ=
£¬ÖªµÀÖÊÁ¿ºÍÃܶȱȽÏÌå»ý´óС£®
£¨3£©ÔÙ¸ù¾ÝQ=cm¡÷t£¬ÅжÏζȱ仯Á¿£®
£¨2£©¸ù¾Ý¦Ñ=
m |
v |
£¨3£©ÔÙ¸ù¾ÝQ=cm¡÷t£¬ÅжÏζȱ仯Á¿£®
½â´ð£º½â£ºA¡¢ÍµÄÈÛµãÊÇ1083¡æ£¬ÎýµÄÈÛµãÊÇ232¡æ£¬ÓÃÎý×öÈÛ»¯ÍµÄÆ÷Ãó£¬Í»¹Ã»ÓдﵽÈ۵㣬Æ÷Ãó¾Í©ÁË£®·ûºÏÌâÒ⣮
B¡¢¸ù¾Ý¦Ñ=
£¬ÖÊÁ¿ÏàµÈ£¬´¿Ë®µÄÃܶȴ󣬴¿Ë®µÄÌå»ýС£®²»·ûºÏÌâÒ⣮
C¡¢¸ù¾ÝQ=cm¡÷t£¬·Å³öÈÈÁ¿ÏàµÈ£¬c1m1¡÷t1=c2m2¡÷t2£¬c1¦Ñ1v¡÷t1=c2¦Ñ2v¡÷t2£¬c1¦Ñ1¡÷t1=c2¦Ñ2¡÷t2£¬
=
=
=0.68£¼1£®ËùÒÔÍ¿éζȽµµÍµÄÉÙ£¬ÂÁ¿éζȽµµÍµÄ¶à£®²»·ûºÏÌâÒ⣮
D¡¢¸ù¾ÝQ=cm¡÷t£¬ÎüÊÕÈÈÁ¿ÏàµÈ£¬ÖÊÁ¿ÏàµÈ£¬Ë®µÄ±ÈÈȱȸÉÄàÍÁµÄ±ÈÈÈ´ó£¬Ë®µÄζȱȸÉÄàÍÁÉý¸ßµÄС£®²»·ûºÏÌâÒ⣮
¹ÊÑ¡A£®
B¡¢¸ù¾Ý¦Ñ=
m |
v |
C¡¢¸ù¾ÝQ=cm¡÷t£¬·Å³öÈÈÁ¿ÏàµÈ£¬c1m1¡÷t1=c2m2¡÷t2£¬c1¦Ñ1v¡÷t1=c2¦Ñ2v¡÷t2£¬c1¦Ñ1¡÷t1=c2¦Ñ2¡÷t2£¬
¡÷t1 |
¡÷t2 |
c2¦Ñ2 |
c1¦Ñ1 |
0.88¡Á103J/(kg?¡æ)¡Á2.7¡Á103kg/m3 |
0.39¡Á103J/(kg?¡æ)¡Á8.9¡Á103kgm3 |
D¡¢¸ù¾ÝQ=cm¡÷t£¬ÎüÊÕÈÈÁ¿ÏàµÈ£¬ÖÊÁ¿ÏàµÈ£¬Ë®µÄ±ÈÈȱȸÉÄàÍÁµÄ±ÈÈÈ´ó£¬Ë®µÄζȱȸÉÄàÍÁÉý¸ßµÄС£®²»·ûºÏÌâÒ⣮
¹ÊÑ¡A£®
µãÆÀ£º£¨1£©ÕÆÎÕ¾§ÌåÔÚ²»Í¬Î¶ÈϵÄ״̬£®
£¨2£©¸ù¾ÝÃܶȹ«Ê½ÄÜÅжÏÌå»ý´óС»òÖÊÁ¿´óС£®
£¨3£©ÕÆÎÕQ=cm¡÷t½øÐмÆË㣮¶ÔӦѡÏîC¿´ËƲ»ÄÜÈ·¶¨Î¶ȱ仯¶àÉÙ£¬Í¨¹ý±ÈÀý·½·¨ÊÇ¿ÉÒÔ½â¾öµÄ£®
£¨2£©¸ù¾ÝÃܶȹ«Ê½ÄÜÅжÏÌå»ý´óС»òÖÊÁ¿´óС£®
£¨3£©ÕÆÎÕQ=cm¡÷t½øÐмÆË㣮¶ÔӦѡÏîC¿´ËƲ»ÄÜÈ·¶¨Î¶ȱ仯¶àÉÙ£¬Í¨¹ý±ÈÀý·½·¨ÊÇ¿ÉÒÔ½â¾öµÄ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿