¼ÒÍ¥ÖÐʹÓõÄÒº»¯Ê¯ÓÍÆø´¢´æÔÚ¸Ö¹ÞÀ¸Ö¹Þ¶¥²¿ÓÐÒ»¸ö·§ÃÅ¿ª¹Ø£¬¹ÞÄÚÆøѹ´óÓÚ´óÆøѹ£¬Ê¯ÓÍÆøй©ʱÒ×·¢ÉúÖж¾¡¢±¬Õ¨ºÍ»ðÔÖʹʣ¬ÒÑ֪ʯÓÍÆøÈÈֵΪ3.5×107J/kg£¬ÉÕˮʱ£¬ÉèʯÓÍÆøȼÉշųöµÄÈÈÁ¿Ö»ÓÐ60%±»Ë®ÎüÊÕ£®ÎÊ£º£¨1£©½«ÖÊÁ¿Îª5kg£¬³õÎÂΪ20¡æµÄË®¼ÓÈȵ½100¡æ£¬ÐèÒªÍêȫȼÉÕÒº»¯Ê¯ÓÍÆø¶àÉÙ¿Ë£¿£¨2£©µ±·¢ÏÖ¼ÒÖиֹÞÄÚµÄÒº»¯Ê¯ÓÍÆøй©ʱ£¬Îª·Àֹʹʵķ¢ÉúÄãÓ¦²ÉÈ¡ÄÄЩ´ëÊ©£®
¡¾´ð°¸¡¿·ÖÎö£º£¨1£©ÏÈÓÉQÎü=cm¡÷t¼ÆËã³öË®ÎüÊÕµÄÈÈÁ¿£¬ÔÙÓÉQ=mq¼ÆËãÐèÒªµÄÒº»¯Ê¯ÓÍÆøµÄÖÊÁ¿£»
£¨2£©ÓÉÓÚÒº»¯Ê¯ÓÍÆøÊÇÒ×ȼÆøÌ壬¹Ê²»ÄÜÓÐÃ÷»ð³öÏÖ£®
½â´ð£º½â£º£¨1£©Ë®ÎüÊÕµÄÈÈÁ¿QÎü=cmË®¡÷t=4200J/£¨kg?¡æ£©×5kg×80¡æ=1.68×106J£¬
Òº»¯Ê¯ÓÍÆøÐèÒª·Å³öµÄÈÈÁ¿Q=1.68×106J÷60%=2.8×106J£¬
ÐèÒªµÄÒº»¯Ê¯ÓÍÆøµÄÖÊÁ¿m===0.08kg=80g£®
´ð£ºÐèÒªµÄÒº»¯Ê¯ÓÍÆøµÄÖÊÁ¿Îª80g£®
£¨2£©ÑϽûÓÐÃ÷»ð³öÏÖ¡¢¹Ø±Õ·§ÃÅ¡¢¿ª´°Í¨Æø£®
µãÆÀ£º±¾ÌâÀûÓÃÁ˹«Ê½Q=mqºÍQÎü=cm¡÷t½øÐмÆË㣮ÔÚÀûÓù«Ê½Ê±£¬Òª×¢Òâÿ¸ö×Öĸ±íʾµÄÎïÀíÁ¿¼°Æ䵥λ£®µ±Òº»¯Ê¯ÓÍÆøй©ʱ£¬Ó¦µ±¹Ø±Õ·§ÃÅ¡¢¿ª´°Í¨Æø£¬Ò»¶¨²»Òª³öÏÖÃ÷»ð£¬·ñÔò»á·¢Éú±¬Õ¨£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¼ÒÍ¥ÖÐʹÓõÄÒº»¯Ê¯ÓÍÆø´¢´æÔÚ¸Ö¹ÞÀ¸Ö¹Þ¶¥²¿ÓÐÒ»¸ö·§ÃÅ¿ª¹Ø£¬¹ÞÄÚÆøѹ´óÓÚ´óÆøѹ£¬Ê¯ÓÍÆøй©ʱÒ×·¢ÉúÖж¾¡¢±¬Õ¨ºÍ»ðÔÖʹʣ¬ÒÑ֪ʯÓÍÆøÈÈֵΪ3.5¡Á107J/kg£¬ÉÕˮʱ£¬ÉèʯÓÍÆøȼÉշųöµÄÈÈÁ¿Ö»ÓÐ60%±»Ë®ÎüÊÕ£®ÎÊ£º£¨1£©½«ÖÊÁ¿Îª5kg£¬³õÎÂΪ20¡æµÄË®¼ÓÈȵ½100¡æ£¬ÐèÒªÍêȫȼÉÕÒº»¯Ê¯ÓÍÆø¶àÉÙ¿Ë£¿£¨2£©µ±·¢ÏÖ¼ÒÖиֹÞÄÚµÄÒº»¯Ê¯ÓÍÆøй©ʱ£¬Îª·Àֹʹʵķ¢ÉúÄãÓ¦²ÉÈ¡ÄÄЩ´ëÊ©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÎÊ´ðÌâ

¼ÒÍ¥ÖÐʹÓõÄÒº»¯Ê¯ÓÍÆø´¢´æÔÚ¸Ö¹ÞÀ¸Ö¹Þ¶¥²¿ÓÐÒ»¸ö·§ÃÅ¿ª¹Ø£¬¹ÞÄÚÆøѹ´óÓÚ´óÆøѹ£¬Ê¯ÓÍÆøй©ʱÒ×·¢ÉúÖж¾¡¢±¬Õ¨ºÍ»ðÔÖʹʣ¬ÒÑ֪ʯÓÍÆøÈÈֵΪ3.5¡Á107J/kg£¬ÉÕˮʱ£¬ÉèʯÓÍÆøȼÉշųöµÄÈÈÁ¿Ö»ÓÐ60%±»Ë®ÎüÊÕ£®ÎÊ£º£¨1£©½«ÖÊÁ¿Îª5kg£¬³õÎÂΪ20¡æµÄË®¼ÓÈȵ½100¡æ£¬ÐèÒªÍêȫȼÉÕÒº»¯Ê¯ÓÍÆø¶àÉÙ¿Ë£¿£¨2£©µ±·¢ÏÖ¼ÒÖиֹÞÄÚµÄÒº»¯Ê¯ÓÍÆøй©ʱ£¬Îª·Àֹʹʵķ¢ÉúÄãÓ¦²ÉÈ¡ÄÄЩ´ëÊ©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£ºÍ¬²½Ìâ ÌâÐÍ£º¼ÆËãÌâ

¼ÒÍ¥ÖÐʹÓõÄÒº»¯Ê¯ÓÍÆø´¢´æÔÚ¸Ö¹ÞÀ¸Ö¹Þ¶¥²¿ÓÐÒ»¸ö·§ÃÅ¿ª¹Ø£¬¹ÞÄÚÆøѹ´óÓÚ´óÆøѹ£¬Ê¯ÓÍÆøй©ʱÒ×·¢ÉúÖж¾¡¢±¬Õ¨ºÍ»ðÔÖʹʣ¬ÒÑ֪ʯÓÍÆøÈÈֵΪ3.5¡Á107J/kg£¬ÉÕˮʱ£¬ÉèʯÓÍÆøȼÉշųöµÄÈÈÁ¿Ö»ÓÐ60%±»Ë®ÎüÊÕ¡£ÎÊ£º
£¨1£©½«ÖÊÁ¿Îª5kg£¬³õÎÂΪ20¡æµÄË®¼ÓÈȵ½100¡æ£¬ÐèÒªÍêȫȼÉÕÒº»¯Ê¯ÓÍÆø¶àÉÙ¿Ë£¿
£¨2£©µ±·¢ÏÖ¼ÒÖиֹÞÄÚµÄÒº»¯Ê¯ÓÍÆøй©ʱ£¬Îª·Àֹʹʵķ¢ÉúÄãÓ¦²ÉÈ¡ÄÄЩ´ëÊ©¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2009-2010ѧÄêËÕ¿Æ°æ¾ÅÄ꼶£¨ÉÏ£©µÚÒ»´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

¼ÒÍ¥ÖÐʹÓõÄÒº»¯Ê¯ÓÍÆø´¢´æÔÚ¸Ö¹ÞÀ¸Ö¹Þ¶¥²¿ÓÐÒ»¸ö·§ÃÅ¿ª¹Ø£¬¹ÞÄÚÆøѹ´óÓÚ´óÆøѹ£¬Ê¯ÓÍÆøй©ʱÒ×·¢ÉúÖж¾¡¢±¬Õ¨ºÍ»ðÔÖʹʣ¬ÒÑ֪ʯÓÍÆøÈÈֵΪ3.5×107J/kg£¬ÉÕˮʱ£¬ÉèʯÓÍÆøȼÉշųöµÄÈÈÁ¿Ö»ÓÐ60%±»Ë®ÎüÊÕ£®ÎÊ£º£¨1£©½«ÖÊÁ¿Îª5kg£¬³õÎÂΪ20¡æµÄË®¼ÓÈȵ½100¡æ£¬ÐèÒªÍêȫȼÉÕÒº»¯Ê¯ÓÍÆø¶àÉÙ¿Ë£¿£¨2£©µ±·¢ÏÖ¼ÒÖиֹÞÄÚµÄÒº»¯Ê¯ÓÍÆøй©ʱ£¬Îª·Àֹʹʵķ¢ÉúÄãÓ¦²ÉÈ¡ÄÄЩ´ëÊ©£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸