ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ð¡Ã÷ͬѧÔÚ¡°Ì½¾¿¸¡Á¦´óСÓë½þÈëË®ÖÐÉî¶ÈµÄ¹Øϵ¡±Ê±,ËûÔÚ²âÁ¦¼ÆϹÒÒ»¸öʵÐÄÔ²ÖùÌå,¹Û²ìÔ²ÖùÌå½þÈëË®Öв»Í¬Éî¶Èʱ²âÁ¦¼ÆʾÊý±ä»¯µÄÇé¿ö,²¢¼Ç¼Èçϱí:
£¨1£©¸ÃÔ²ÖùÌåµÄÖØÁ¦Îª N£»
£¨2£©ÔÚµÚ3´ÎʵÑéÖУ¬ÎïÌåÊܵ½µÄ¸¡Á¦ÊÇN£»
£¨3£©Ô²ÖùÌåµÄÌå»ýΪm3 £¬ ÃܶÈÊÇkg/m3£»
£¨4£©ÆäËûͬѧ¸ù¾ÝСÃ÷ͬѧµÄʵÑé¼Ç¼£¬»æÖƳöÁËͼËùʾµÄËĸö¡°ÎïÌå½þÔÚË®ÖÐËùÊܸ¡Á¦F¸¡Óë½þÈëË®ÖÐÉî¶Èh¹Øϵ¡±µÄͼÏñ£¬ÄãÈÏΪÕýÈ·µÄÊÇ.
¡¾´ð°¸¡¿
£¨1£©3
£¨2£©0.3
£¨3£©0.62¡Á10-4,5¡Á103
£¨4£©B
¡¾½âÎö¡¿½â£º£¨1£©ÓɵÚÒ»´ÎʵÑéÖУ¬G=F=3N£»
£¨2£©µÚ3´ÎʵÑéÖª£¬F¸¡=G-F¡ä=3N-2.7N=0.3N£»
£¨3£©ÓɵÚ6»ò7»ò8»ò9´ÎʵÑéÖª£¬µ±ÎïÌåÍêÈ«½þûʱ£¬F¸¡¡ä=G-F¡å=3N-2.4N=0.6N£»ÓÉF¸¡=¦ÑË®gVÅſɵ㬠£»
ÒòΪÎïÌåÈ«²¿½þû£¬ËùÒÔV=VÅÅ=0.6¡Á10-4m3£»
ÎïÌåÖÊÁ¿ £¬
ÎïÌåÃÜ¶È £»
£¨4£©Óɱí¸ñÖÐÊý¾ÝÖª£¬²âÁ¦¼ÆµÄʾÊýÏȱäСºó²»±ä£¬ËùÒÔÊܵ½µÄ¸¡Á¦Ïȱä´óºó²»±ä£¬A±íʾ¸¡Á¦ÏȱäСºó²»±ä£¬B±íʾÊܵ½µÄ¸¡Á¦Ïȱä´óºó²»±ä£¬C±íʾ¸¡Á¦Ò»Ö±Ôö´ó£¬D±íʾ¸¡Á¦Ò»Ö±¼õС£¬Òò´ËÖ»ÓÐBÕýÈ·£»
¹Ê´ð°¸Îª£º£¨1£©3£»£¨2£©0.3£»£¨3£©0.62¡Á10-4£»5¡Á103£»£¨4£©B£®
£¨1£©£¨2£©¾Ý±í¸ñÖÐÊý¾ÝÅжϳöÎïÌåµÄÖØÁ¦ºÍµÚÈý´ÎʵÑéÖеÄÀÁ¦£¬¸ù¾ÝF¸¡=G-F¼ÆËã³öÎïÌåÊܵ½µÄ¸¡Á¦£»
£¨3£©¸ù¾Ý±í¸ñÖÐÊý¾Ý¼ÆËã³öÎïÌåÍêÈ«½þûʱËùÊܵĸ¡Á¦£¬¸ù¾Ý°¢»ùÃ×µÂÔÀí¼ÆËã³öÎïÌåµÄÌå»ý£¬¸ù¾Ý¼ÆËã³öÎïÌåµÄÃܶȣ»
£¨4£©¸ù¾Ý±í¸ñÖÐÊý¾Ý£¬µÃ³öÊܸ¡Á¦µÄ´óС±ä»¯£¬ÎïÌåÍêÈ«½þûǰ£¬¸¡Á¦ËæÉî¶ÈµÄÔö¼Ó¶øÔö´ó£¬ÍêÈ«½þûºó£¬¸¡Á¦´óС²»±ä£®