ÓÃÌìƽºÍÁ¿Í²²â¶¨ÑÎË®ÃܶȵÄʵÑéÖУ¬ÓÐÈçϲ½Ö裺
A£®½«ÉÕ±­Ò»²¿·ÖÑÎË®µ¹ÈëÁ¿Í²ÄÚ£¬¼ÇÏÂÑÎË®µÄÌå»ýΪV£»
B£®µ÷½ÚÌìƽºáÁºÆ½ºâÂÝĸ£¬Ê¹Ììƽƽºâ£»
C£®½«Ê¢ÓÐÑÎË®µÄÉÕ±­·ÅÔÚÌìƽÉÏ£¬Ê¹ÌìƽÔÚˮƽλÖÃƽºâ£¬¼ÇÏÂÆäÖÊÁ¿Îªm1£»
D£®½«Ììƽ·ÅÔÚˮƽ×ÀÃæÉÏ£»
E£®¸ù¾Ý¦Ñ=m/vËã³öÑÎË®µÄÃܶȣ»
F£®°ÑÑÎË®µ¹½øÁ¿Í²ºóµÄÊ£ÓàÑÎË®Á¬Í¬ÉÕ±­·ÅÔÚÌìƽÉÏ£¬Ê¹ÌìƽÔÚˮƽλÖÃƽºâ£¬¼ÇÏÂÆäÖÊÁ¿Îªm2£®ÎÊ£º
£¨1£©Ç밴ʵÑéºÏÀí²½ÖèÖØÐÂÅÅÁУº£¨Ð´×Öĸ£©
 

¾«Ó¢¼Ò½ÌÍø
£¨2£©ÊµÑé²Ù×÷¹ý³Ì£¬ÌìƽºÍÁ¿Í²Ê¾Êý£¬ÈçÏÂͼËùʾʵÑéÊý¾ÝÌîÈëÏÂ±í£®
ÉÕ±­ºÍÑÎË®µÄ×ÜÖÊÁ¿m1/g ÉÕ±­ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿m2/g Á¿Í²ÀïÑÎË®ÖÊÁ¿m/g ÑÎË®µÄÌå»ýV/m3 ÑÎË®µÄÃܶȦѣ¨kg/m3£©
·ÖÎö£ºÕâÊÇÒ»µÀ±ØÐëÕÆÎյIJâÒºÌ壨ÑÎË®£©Ãܶȵķ½·¨µÄ»ù´¡Ì⣬²âµÃÒºÌåµÄÖÊÁ¿ºÍÌå»ý£¬Óù«Ê½¦Ñ=
m
V
¿ÉËã³öÒºÌåÃܶȣ®
½â´ð£º½â£º£¨1£©Îª·ÀÖ¹ÈÝÆ÷±ÚÕ³ÒºÌåÓ°ÏìÒºÌåÃܶÈÖµ£¬Ó¦ÏȲâÒºÌåÉÕ±­×ÜÖÊÁ¿£¬ÔÙ½«ÊÊÁ¿ÒºÌåµ¹ÈëÁ¿Í²²âÌå»ý£¬
²¢²âÊ£ÓàÒºÌåÉÕ±­ÖÊÁ¿£¬Óüõ³öÀ´µÄÖÊÁ¿³ýÒÔ²âµÃµÄÌå»ý£¬²»»á´øÀ´½Ï´óÎó²î£¬
¹ÊÑ¡DBCAFE
£¨2£©ÉÕ±­ÑÎË®×ÜÖÊÁ¿£º100g+50g+4g=154g£¬ÉÕ±­ºÍÊ£ÓàÑÎË®ÖÊÁ¿£º50g+20g=70g£»
µ¹ÈëÁ¿Í²ÖÐÑÎË®ÖÊÁ¿£º154g-70g=84g£¬°¼ÒºÃæ×îµÍ´¦Ö¸80ml=80cm3=8¡Á10-5m3£»
Ëã³öÑÎË®ÃܶȦÑ=
m
V
=
8.4¡Á10-2kg
8¡Á10-5m3
=1.05¡Á103kg/m3£¬¹Ê´ð°¸Îª£º
ÉÕ±­ºÍÑÎË®µÄ×ÜÖÊÁ¿m1/g ÉÕ±­ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿m2/g Á¿Í²ÀïÑÎË®ÖÊÁ¿m/g ÑÎË®µÄÌå»ýV/m3 ÑÎË®µÄÃܶȦѣ¨kg/m3£©
 154  70 84 8¡Á10-5 1.05¡Á103
µãÆÀ£ºÌý½²Ñ§Ï°µÄѧÉú£¬µÚÒ»ÎÊÓ¦»á×ö£¬µ«±¾ÌâµÄµÚ¶þÎÊÔÚµ¥Î»µÄÒªÇóÉϱȽÏÑϸñ£¬ÌîÆðÀ´ÊýÖµ»áÓкܶàÎÊÌ⣬Ӧ¼ÓÒÔ×¢Ò⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2012?°°É½ÈýÄ££©ÓÃÌìƽºÍÁ¿Í²²â¶¨ÑÎË®ÃܶȵÄʵÑé²½ÖèÈçÏ£º
£¨1£©µ÷½ÚÌìƽƽºâ£¬°ÑÌìƽ·ÅÔÚˮƽ×ÀÃ棬°ÑÓÎÂë·ÅÔÚ±ê³ß×ó¶ËµÄ
Áã¿Ì¶ÈÏß´¦
Áã¿Ì¶ÈÏß´¦
£¬µ÷½Ú
ƽºâÂÝĸ
ƽºâÂÝĸ
ʹָÕëÖ¸ÔÚ·Ö¶ÈÅ̵ÄÖÐÏß´¦£®
£¨2£©²â³öÉÕ±­ºÍÑÎË®µÄ×ÜÖÊÁ¿m1=
76.4g
76.4g
£®
£¨3£©°ÑÒ»²¿·ÝÑÎË®µ¹ÈëÁ¿Í²ÖУ¬¶Á³öÑÎË®µÄÌå»ýV=
40cm3
40cm3
£®
£¨4£©²â³öÉÕ±­ºÍÊ£ÓàÑÎË®µÄÖÊÁ¿m2=
33.6g
33.6g
£®
£¨5£©Ëã³öÁ¿Í²ÖÐÑÎË®µÄÖÊÁ¿m=
42.8g
42.8g
£®
£¨6£©Ëã³öÑÎË®µÄÃܶȦÑ=
1.07¡Á103
1.07¡Á103
kg/m3£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¡°ÓÃÌìƽºÍÁ¿Í²²â¶¨ÑÎË®µÄÃܶȡ±ÊµÑéµÄ¼¸¸ö²½ÖèÈçÏ£º
A£®³Æ³ö²£Á§±­ºÍ±­ÖÐÊ£ÏÂÑÎË®µÄÖÊÁ¿Îªm2£»
B£®ÔÚ²£Á§±­ÖÐÊ¢ÑÎË®£¬³Æ³öËüÃǵÄÖÊÁ¿m1£»
C£®µ÷½ÚÌìƽʹÌìƽƽºâ£»
D£®°Ñ²£Á§±­ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ýV£»
¢ÙÇ뽫ÒÔÉÏʵÑé²½Öè°´ºÏÀíÅÅÐò£¬Æä˳ÐòΪ
CBDA
CBDA
£»
¢Ú¸ù¾ÝÉÏÊö²½ÖèÖеÄÊý¾Ým1¡¢m2¡¢V£¬¿ÉÇó³öÑÎË®µÄÃܶÈ
¦Ñ=
m1-m2
V
¦Ñ=
m1-m2
V
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓÃÌìƽºÍÁ¿Í²²â¶¨ÑÎË®µÄÃܶȵÄʵÑéÖУ¬ÓÐÈçϲÙ×÷£º
A£¬ÓÃÌìƽ³Æ³öÉÕ±­ºÍÑÎË®µÄ×ÜÖÊÁ¿m1£»
B£¬ÓÃÌìƽ³Æ³öÉÕ±­ºÍÊ£ÓàÑÎË®µÄ×ÜÖÊÁ¿m2£»
C£¬µ÷½ÚÌìƽʹÌìƽºáÁºÆ½ºâ£»
D£¬½«ÉÕ±­ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®µÄÌå»ýV£»
ÄÇô£¬ÕýÈ·µÄ²Ù×÷˳ÐòÊÇ
CADB
CADB
£»ÑÎË®ÃܶȵļÆËãʽÊǦÑ=
m1-m2
V
m1-m2
V
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÓÃÌìƽºÍÁ¿Í²²â¶¨ÑÎË®µÄÃܶȣ¬ÓÐÈçϲÙ×÷£º
£¨A£©ÓÃÌìƽ³Æ³öÉÕ±­ºÍÑÎË®µÄ×ÜÖÊÁ¿M£»
£¨B£©ÓÃÌìƽ³Æ³öÉÕ±­ºÍÊ£ÏÂÑÎË®µÄ×ÜÖÊÁ¿m£»
£¨C£©µ÷½ÚÌìƽʹÌìƽƽºâ£»
£¨D£©½«ÉÕ±­ÖеÄÑÎË®µ¹ÈëÁ¿Í²ÖÐÒ»²¿·Ö£¬¼ÇÏÂÁ¿Í²ÖÐÑÎË®Ìå»ýV£»
£¨E£©Óù«Ê½¦Ñ=£¨M-m£©/V¼ÆËã³öÑÎË®µÄÃܶȣ®ÄÇô£¬ÕýÈ·²Ù×÷²½ÖèµÄÐòºÅÓ¦ÊÇ
CADBE
CADBE
£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸