ÓÃÌìƽºÍÁ¿Í²²âÁ¿Ä³½ðÊô¿éµÄÃܶȣ®
£¨1£©ÔÚµ÷½ÚÌìƽƽºâʱ£¬½«ÓÎÂëÒƵ½ºáÁº±ê³ßµÄ0¿Ì¶ÈÏßÉÏ£¬´ËʱָÕëÆ«Ïò·Ö¶ÈÅ̵Ä×ó²à£¬ÒªÊ¹Ììƽƽºâ£¬Ó¦½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏò______£¨×ó/ÓÒ£©Òƶ¯£»
£¨2£©Óõ÷½ÚºÃµÄÌìƽ³Æ½ðÊô¿éµÄÖÊÁ¿£¬µ±Ììƽƽºâʱ£¬ÓÒÅÌÖеÄíÀÂëºÍÓÎÂëλÖÃÈçͼ¼×Ëùʾ£¬Ôò½ðÊô¿éµÄÖÊÁ¿Îª______g£»
£¨3£©ÓÃÁ¿Í²²â½ðÊô¿éµÄÌå»ý£¬ÈçͼÒÒËùʾ£¬Ôò½ðÊô¿éµÄÌå»ýΪ______cm3£»
£¨4£©ÀûÓÃÃܶȼÆË㹫ʽËã³ö½ðÊô¿éµÄÃܶÈΪ______g/cm3£®
¾«Ó¢¼Ò½ÌÍø
£¨1£©Ö¸ÕëÆ«Ïò·Ö¶ÈÅ̵Ä×ó²à£¬ËµÃ÷ºáÁºµÄÓÒ¶ËÉÏÇÌ£¬ËùÒÔÓҶ˻ò×ó¶ËµÄƽºâÂÝĸÏòÉÏÇ̵ÄÓÒ¶ËÒƶ¯£®
£¨2£©½ðÊô¿éµÄÖÊÁ¿m=50g+20g+5g+3.4g=78.4g£®
£¨3£©½ðÊô¿éµÄÌå»ýV=40ml-30ml=10ml=10cm3£®
£¨4£©½ðÊô¿éµÄÃܶÈΪ£º¦Ñ=
m
V
=
78.4g
10cm3
=7.84g/cm3£®
¹Ê´ð°¸Îª£º£¨1£©ÓÒ£»£¨2£©78.4£»£¨3£©10£»£¨4£©7.84£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2012?½ðÍåÇøһģ£©ÓÃÌìƽºÍÁ¿Í²²âÁ¿Ä³½ðÊô¿éµÄÃܶȣº
£¨1£©Ê¹ÓÃÌìƽʱ£¬Ê×ÏȽ«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£¬È»ºó°ÑÓÎÂëÒÆÖÁºáÁº±ê³ßµÄ
Áã¿Ì¶È´¦
Áã¿Ì¶È´¦
£¬¹Û²ìÖ¸ÕëµÄƫתÇé¿ö£¬È»ºóͨ¹ýµ÷½Ú
ƽºâÂÝĸ
ƽºâÂÝĸ
ʹÌìƽºáÁºÆ½ºâ£®
£¨2£©ÓÐÈçÏÂһЩʵÑé²½Ö裺
¢ÙÓõ÷½ÚºÃµÄÌìƽ²â³ö½ðÊô¿éµÄÖÊÁ¿m£»
¢Ú½«½ðÊô¿é½þûÔÚÁ¿Í²ÄÚµÄË®ÖУ¬²â³ö½ðÊô¿éºÍË®µÄ×ÜÌå»ýV2£»
¢Û¸ù¾ÝÃܶȵĹ«Ê½£¬Çó³ö½ðÊô¿éµÄÃܶȦѣ»
¢ÜÏòÁ¿Í²Öе¹½øÊÊÁ¿µÄË®£¬²â³öÕâЩˮµÄÌå»ýV1£®
ÄãÈÏΪÕýȷʵÑé²½ÖèµÄ˳ÐòΪ
C
C
£®
A¡¢¢Ù¢Ú¢Û¢Ü£»    B¡¢¢Ü¢Ú¢Ù¢Û£»     C¡¢¢Ü¢Ù¢Ú¢Û£»     D¡¢¢Ü¢Ù¢Û¢Ú£®
£¨3£©ÓÉÈçͼ¿ÉÖª£¬½ðÊô¿éµÄÖÊÁ¿Îª
71.4
71.4
g£¬½ðÊô¿éµÄÌå»ýΪ
10
10
cm3£¬½ðÊô¿éµÄÃܶÈΪ
7.14¡Á103
7.14¡Á103
kg/m3£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸