ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÔÚ¡°²âÁ¿ÑÎË®µÄÃܶȡ±ÊµÑéÖУº
£¨1£©°ÑÌìƽ·ÅÔÚˮƽ̨ÉÏ£¬ÓÎÂë¹éÁãºó£¬·¢ÏÖÌìƽ×óÅ̵ÍÓÒÅ̸ߣ¬´ËʱӦ½«Æ½ºâÂÝĸÏò____ µ÷½Ú£¬Ö±µ½ºáÁºË®Æ½Æ½ºâ£®
£¨2£©ÓÃÌìƽ²â³ö¿ÕÉÕ±µÄÖÊÁ¿Îª20g£¬ÔÚÉÕ±Öе¹Èë_____µÄÑÎË®£¨ÑÎË®µÄÁ¿ÒªÇ󣩣¬²â³öÉÕ±ºÍÑÎË®µÄ×ÜÖÊÁ¿Èçͼ¼×Ëùʾ£¬½«ÉÕ±ÖеÄÑÎˮȫ²¿µ¹ÈëÁ¿Í²ÖУ¬ÑÎË®µÄÌå»ýÈçͼÒÒËùʾ£¬ÔòÉÕ±ÖÐÑÎË®µÄÖÊÁ¿Îª_____g£¬ÑÎË®µÄÃܶÈΪ_____kg/m3£®
£¨3£©ÈôʵÑéºóСÃ÷·¢ÏÖÉÕ±ÖвÐÁôÉÙÁ¿ÑÎË®£¬Ôò²âµÃµÄÑÎË®ÃܶȱÈÕæʵֵ_____£®
¡¾´ð°¸¡¿ ÓÒ ÊÊÁ¿ 66 1.1¡Á103 ´ó
¡¾½âÎö¡¿£¨1£©ÔÚµ÷½Ú¹ý³ÌÖУ¬ÒòΪÌìƽ×óÅ̵ÍÓÒÅ̸ߣ¬¼´Ö¸ÕëÆ«Ïò·Ö¶ÈÅ̵Ä×ó·½£¬ËùÒÔ£¬Ó¦½«Æ½ºâÂÝĸÏòÓұߵ÷½Ú£»
£¨2£©Óɼ×ͼ֪µÀ£¬ÉÕ±ºÍÑÎË®µÄ×ÜÖÊÁ¿ÊÇ£º50g+20g+10g+5g+1g=86g£¬ËùÒÔ£¬ÑÎË®µÄÖÊÁ¿ÊÇ£ºm=86g-20g=66g£¬ÓÉÒÒͼ֪µÀ£¬ÑÎË®µÄÌå»ýÊÇ£ºV=60cm3 £¬ËùÒÔÑÎË®µÄÃܶÈÊÇ£º¦Ñ=m/V=66g/60cm3=1.1g/cm3 =1.1¡Á103 kg/m3 £»
£¨3£©ÒòΪ½«ÑÎË®´ÓÉÕ±µ¹ÈëÁ¿Í²Ê±²»¿ÉÄÜÍêÈ«µ¹¸É¾»£¬ËùÒÔÌå»ýµÄ²âÁ¿½á¹ûƫС£¬¶øÖÊÁ¿µÄ²âÁ¿½á¹ûÊÇ׼ȷµÄ£¬ÓɦÑ=m/VÖªµÀ£¬´ËÃܶȵIJâÁ¿½á¹û±ÈÕæʵֵ»áÆ«´ó¡£
![](http://thumb2018.1010pic.com/images/loading.gif)