ÌâÄ¿ÄÚÈÝ
ÖÊÁ¿Îª9ǧ¿ËµÄ±ù¿é£¬ÃܶÈΪ0.9¡Á103ǧ¿Ë/Ã×3¡£
¢Ù Çó±ù¿éµÄÌå»ýV±ù¡£
¢Ú Èô±ù¿éÎüÈȺó£¬ÓÐ3¡Á10?3Ã×3µÄ±ùÈÛ»¯³ÉË®£¬ÇóË®µÄÖÊÁ¿mË®¡£
¢Ù1¡Á10-2Ã×3£»¢Ú2.7ǧ¿Ë ¡¾½âÎö¡¿(1)Óɦѵñù¿éµÄÌå»ý£ºV±ù0.01m3.(2)ÓɦѵÃ3¡Á10?3Ã×3±ùµÄÖÊÁ¿£ºm±ù¦Ñ±ù0.9¡Á103kg/m3¡Á3¡Á10?3m32.7kg£¬ÒòΪ±ù»¯Ë®ÖÊÁ¿²»±ä£¬ËùÒÔ±ù¿éÈÛ»¯³ÉË®ºóµÄÖÊÁ¿£ºmË®m±ù=2.7kg.
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿