СÃ÷¼ÒµÄ¹¤ÒÕÆ·£º
СÃ÷µÄÂèÂè×î½üÂòÁËÒ»¸ö¹¤ÒÕÆ·£¬¿´ÉÏÈ¥ÏñÊÇ´¿½ðÖÆ×÷µÄ£®
£¨1£©Ð¡Ã÷ÂèÂèÏëÖªµÀÕâ¸ö¹¤ÒÕÆ·ÊDz»ÊÇ´¿½ðµÄ£¬ÄãÈÏΪ¿ÉÒÔ²â³ö¹¤ÒÕÆ·µÄ
 
Õâ¸öÎïÀíÁ¿£¬´Ó¶ø½øÐмø±ð£®
£¨2£©Ð¡Ã÷ͬѧÔÚʵÑéÊÒÖÐÓÃÌìƽºÍÁ¿Í²²â¶¨¹¤ÒÕÆ·µÄÃܶȣ¬ÇëÄ㽫ÕýÈ·µÄʵÑé²Ù×÷˳ÐòÅÅÁÐÆðÀ´£¨Ö»ÌîÐòºÅ£©£º
 
£®
a¡¢½«¹¤ÒÕÆ·½þûÔÚÁ¿Í²ÄÚµÄË®ÖУ¬²â³ö¹¤ÒÕÆ·ºÍË®µÄ×ÜÌå»ýV1£®
b¡¢ÓÃÌìƽ³Æ³ö¹¤ÒÕÆ·µÄÖÊÁ¿m£®
c¡¢½«ÊÊÁ¿µÄË®µ¹ÈëÁ¿Í²ÖУ¬²â³öË®µÄÌå»ýV2£®
d¡¢¼ÆËã³ö¹¤ÒÕÆ·µÄÃܶȦѣ®
£¨3£©ÊµÑéÖУ¬Ð¡Ã÷²âÁ¿¹¤ÒÕÆ·ÖÊÁ¿£¬Ììƽƽºâʱ£¬ÓÒÅÌÄÚíÀÂëµÄÖÊÁ¿ÒÔ¼°ÓÎÂëËùÔÚµÄλÖÃÈçͼһËùʾ£¬Ôò¹¤ÒÕÆ·µÄÖÊÁ¿Îª
 
¿Ë£»²âÌå»ýʱ£¬Á¿Í²ÖÐÒºÃæµÄλÖÃÈçͼ¶þËùʾ£¬Ôò¹¤ÒÕÆ·µÄÌå»ýΪ
 
_ÀåÃ×3£®Ôò¹¤ÒÕÆ·µÄÃܶÈΪ
 
ǧ¿Ë/Ã×3£®Ð¡Ã÷ÊÕ¼¯Á˼¸ÖÖ½ðÊôµÄÃܶÈÈçϱíËùʾ£¬ÄÇôÂèÂèµÄ¹¤ÒÕÆ·ÊÇÓÉ
 
ÖƳɵģ®ÕâÖÖ½ðÊôÔÚÈÕ³£Éú»îÖÐÓ¦Óù㷺£¬ÀýÈ磺
 
£¨¾Ù1Àý£©£®
¾«Ó¢¼Ò½ÌÍø¾«Ó¢¼Ò½ÌÍø
¾«Ó¢¼Ò½ÌÍø
£¨4£©Èç¹ûÔÚʵÑéÖУ¬Ð¡Ã÷ͬѧÓÃÌìƽ²âÁ¿ÁíÒ»¼þ¹¤ÒÕÆ·µÄÖÊÁ¿Ê±Îó°ÑíÀÂë·ÅÔÚÌìƽµÄ×óÅÌ£¬°Ñ¹¤ÒÕÆ··ÅÔÚÓÒÅÌ£¬ÈôËû¶Á³ö×óÅÌÖÐíÀÂë×ÜÖÊÁ¿Îª85g£¬ÓÎÂëÔÚ±ê³ßÉÏËù¶ÔµÄ¿Ì¶ÈֵΪ1g£¬Ôò´Ë¹¤ÒÕÆ·µÄʵ¼ÊÖÊÁ¿Îª
 
g£¬ËùÊܵÄÖØÁ¦Îª
 
N£¬ÇëÄãÔÚÈçͼÈýËùʾµÄµ¯»É²âÁ¦¼ÆÉϱêÃ÷Ö¸ÕëËùÔÚµÄλÖã®
¾«Ó¢¼Ò½ÌÍø
£¨5£©Èç¹ûÔÚ²âÁ¿¹¤ÒÕÆ·µÄÃܶÈʱ£¬Ã»ÓÐÌìƽºÍÁ¿Í²£¬µ«Óе¯»É²âÁ¦¼Æ¡¢Ò»Ö»ÉÕ±­ºÍ×ãÁ¿µÄË®£¬ÄãÄÜÏë°ì·¨²â³ö¹¤ÒÕÆ·µÄÃܶÈÂð£¿Ð´³öÄãµÄʵÑé²½Ö裮
·ÖÎö£ºÍ¨¹ýÃܶÈÀ´ÅжÏÎïÌåµÄÐÔÖÊ£¬ÏȲâÁ¿ÎïÌåµÄÖÊÁ¿ÔÙ²âÌå»ý£¬ÖÊÁ¿³ýÒÔÌå»ý¾ÍÊÇÃܶȣ®íÀÂëµÄÖÊÁ¿¼ÓÓÎÂëµÄʾÊý¾ÍÊÇÎïÌåÖÊÁ¿£®
½â´ð£º½â£º£¨1£©ÃܶÈÊÇÎïÌå±¾ÉíµÄÒ»ÖÖÊôÐÔ£¬Í¨¹ýÃܶȿÉÅжÏÎïÌåµÄÐÔÖÊ£®
¹Ê´ð°¸Îª£ºÃܶÈ
£¨2£©²âÃܶÈʱÏȲâÖÊÁ¿ÔÙ²âÌå»ý£¬×îºóËã³öÃܶȣ®
¹ÊÑ¡Bcad
£¨3£©ÎïÌåÖÊÁ¿µÈÓÚíÀÂëÖÊÁ¿¼ÓÓÎÂëʾÊým=50+20+10+5+4=89g£¬Ìå»ý¾ÍÊÇÁ¿Í²Ç°ºóÁ½´Î¶ÁÊýÖ®²îV=80-70=10cm3
ÃܶȦÑ=
m
V
=
89
10
g/cm3=8.9¡Á103kg/cm3
£¬²éÃܶȱí¿ÉÖª´ËÎïÌåΪͭ£¬¿ÉÒÔÖƳɵ¼Ïߣ®
¹Ê´ð°¸Îª£º89¡¢10¡¢8.9¡Á103¡¢Í­¡¢ÖƳÉÍ­µ¼Ïß
£¨4£©ÎïÌåºÍíÀÂëµßµ¹ºóÎïÌåÖÊÁ¿¾ÍµÈÓÚíÀÂëÖÊÁ¿¼õÓÎÂëʾÊým85-1=84g£¬ÖØÁ¦G=mg=0.084¡Á10=0.84N
¹Ê´ð°¸Îª£º84¡¢0.84
£¨5£©ÄÜ£¬
£¨I£©°Ñ¹¤ÒÕÆ·ÓÃϸÏß°óס¹ÒÔÚµ¯»É²âÁ¦¼ÆÉÏ£¬²â³öËüµÄÖØÁ¦G£¬²¢ÓÉm=
G
g
Ëã³ö¹¤ÒÕÆ·µÄÖÊÁ¿m£®
£¨II£©°Ñ¹¤ÒÕÆ··ÅÈëÉÕ±­ÖУ¬¼ÓÈëÊÊÁ¿µÄË®°Ñ¹¤ÒÕÆ·½þû£¬ÔÚË®ÃæËùÔÚλÖÃ×÷±ê¼Ç£¬È¡³ö¹¤ÒÕÆ·£¬°Ñ×°×ÅÊÊÁ¿Ë®µÄÉÕ±­ÓÃϸÏß°óס¹ÒÔÚµ¯»É²âÁ¦¼ÆÉÏ£¬²â³öËüÃǵÄÖØÁ¦G1£¬ÔÙÍùÉÕ±­ÖмÓÈëË®£¬Ê¹Ë®Ãæµ½´ï±ê¼Ç´¦£¬Óõ¯»É²âÁ¦¼Æ²â³öËüÃǵÄÖØÁ¦G2£¬ÓÉG2-G1Ëã³ö¼ÓÈëË®µÄÖØÁ¦G3£¬ÓÉm=
G
g
Ëã³ö¼ÓÈëµÄË®µÄÖÊÁ¿m3£¬ÓÉV=
m
¦Ñ
Ëã³ö¼ÓÈëµÄË®µÄÌå»ýV£¬Ò²¾ÍÊǹ¤ÒÕÆ·µÄÌå»ýV£®
£¨III£©ÓɦÑ=
m
V
Ëã³ö¹¤ÒÕÆ·µÄÃܶȣ®
µãÆÀ£º±¾Ì⿼²é֪ʶÃæ±È½Ï¹ã£¬ÌìƽµÄʹÓã¬Á¿Í²µÄ¶ÁÊý£¬ÖØÁ¦µÄ¼ÆË㣬ÃܶȵļÆË㣬ÊôÓÚÓÐÄѶȵÄÌ⣬ѧÉúÃÇÈÝÒ׳ö´í£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

СÃ÷¼ÒÓÐÒ»¼þ¾«ÃÀµÄ¹¤ÒÕÆ·£¬ÎªÌ½¾¿Ëü¾¿¾¹ÊÇʲô²ÄÁÏÖÆ×÷µÄ£¬Ð¡Ã÷½øÐÐÁËÒÔÏÂʵÑ飺

£¨1£©ÓÃÌìƽ²âÁ¿¹¤ÒÕÆ·µÄÖÊÁ¿£®°ÑÓÎÂëÒÆÖÁ±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦Ê±£¬·¢ÏÖÌìƽµÄÖ¸ÕëÈç¼×Ëùʾ£¬´ËʱӦ½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏò
ÓÒ
ÓÒ
µ÷½Ú£»³ÆÁ¿µÄ¹ý³ÌÖУ¬µ±Ëû°ÑÒ»¸ö20g·ÅÈëÍÐÅÌʱָÕëÔÚ·Ö¶ÈÅÌÉÏ°Ú¶¯µÄ·¶Î§ÈçͼÒÒËùʾ£¬ËûµÄÏÂÒ»²½²Ù×÷ÊÇ
È¡ÏÂ20gµÄíÀÂ룬ÏòÍÐÅÌÄÚÔöÌí10gµÄíÀÂë
È¡ÏÂ20gµÄíÀÂ룬ÏòÍÐÅÌÄÚÔöÌí10gµÄíÀÂë
£»³öÏÖÕâÖÖÇé¿ö¾­¹ýÕýÈ·²Ù×÷£¬²âµÃ¹¤ÒÕÆ·ÖÊÁ¿ÈçͼËùʾΪ
67.4
67.4
g£®
һЩ½ðÊôµÄÃܶȣ¨³£Î³£Ñ¹Ï£©
ÎïÖÊÃû³Æ ÃܶȦÑ/£¨kg?m3£©
½ð 19.3¡Á103
Òø 10.5¡Á103
Í­ 8.9¡Á103
ÂÁ 2.7¡Á103
£¨2£©Í¨¹ýÆäËû;¾¶Öª¹¤ÒÕÆ·Ìå»ýÊÇ25cm3£®¶ÔÕÕÏÂ±í£¬¸Ã¹¤ÒÕÆ·¿ÉÄÜÊÇÓÉ
ÂÁ
ÂÁ
²ÄÁÏÖƳɵģ®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2013½ìɽ¶«Ê¡ÔæׯÊÐỳÇÇø¾ÅÄ꼶µÚÒ»´ÎÔ¿¼ÎïÀíÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£ºÊµÑéÌâ

СÃ÷¼ÒÓÐÒ»¼þ¾«ÃÀµÄ¹¤ÒÕÆ·£¬ÎªÌ½¾¿Ëü¾¿¾¹ÊÇʲô²ÄÁÏÖÆ×÷µÄ£¬Ð¡Ã÷½øÐÐÁËÒÔÏÂʵÑ飺


£¨1£©ÓÃÌìƽ²âÁ¿¹¤ÒÕÆ·µÄÖÊÁ¿¡£°ÑÓÎÂëÒÆÖÁ±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦Ê±£¬·¢ÏÖÌìƽµÄÖ¸ÕëÈç¼×Ëùʾ£¬´ËʱӦ½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏò_________µ÷½Ú£»³ÆÁ¿µÄ¹ý³ÌÖУ¬µ±Ëû°ÑÒ»¸ö20g·ÅÈëÍÐÅÌʱָÕëÔÚ·Ö¶ÈÅÌÉÏ°Ú¶¯µÄ·¶Î§ÈçͼÒÒËùʾ£¬ËûµÄÏÂÒ»²½²Ù×÷ÊÇ______________________________________£»³öÏÖÕâÖÖÇé¿ö¾­¹ýÕýÈ·²Ù×÷£¬²âµÃ¹¤ÒÕÆ·ÖÊÁ¿ÈçͼËùʾΪ________g¡£
£¨2£©Í¨¹ýÆäËû;¾¶Öª¹¤ÒÕÆ·Ìå»ýÊÇ25 cm3¡£¶ÔÕÕ±í£¬¸Ã¹¤ÒÕÆ·¿ÉÄÜÊÇÓÉ____________²ÄÁÏÖƳɡ£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2012-2013ѧÄêɽ¶«Ê¡ÔæׯÊÐỳÇÇø¾ÅÄ꼶µÚÒ»´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÊµÑéÌâ

СÃ÷¼ÒÓÐÒ»¼þ¾«ÃÀµÄ¹¤ÒÕÆ·£¬ÎªÌ½¾¿Ëü¾¿¾¹ÊÇʲô²ÄÁÏÖÆ×÷µÄ£¬Ð¡Ã÷½øÐÐÁËÒÔÏÂʵÑ飺

£¨1£©ÓÃÌìƽ²âÁ¿¹¤ÒÕÆ·µÄÖÊÁ¿¡£°ÑÓÎÂëÒÆÖÁ±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦Ê±£¬·¢ÏÖÌìƽµÄÖ¸ÕëÈç¼×Ëùʾ£¬´ËʱӦ½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏò_________µ÷½Ú£»³ÆÁ¿µÄ¹ý³ÌÖУ¬µ±Ëû°ÑÒ»¸ö20g·ÅÈëÍÐÅÌʱָÕëÔÚ·Ö¶ÈÅÌÉÏ°Ú¶¯µÄ·¶Î§ÈçͼÒÒËùʾ£¬ËûµÄÏÂÒ»²½²Ù×÷ÊÇ______________________________________£»³öÏÖÕâÖÖÇé¿ö¾­¹ýÕýÈ·²Ù×÷£¬²âµÃ¹¤ÒÕÆ·ÖÊÁ¿ÈçͼËùʾΪ________g¡£

£¨2£©Í¨¹ýÆäËû;¾¶Öª¹¤ÒÕÆ·Ìå»ýÊÇ25 cm3¡£¶ÔÕÕ±í£¬¸Ã¹¤ÒÕÆ·¿ÉÄÜÊÇÓÉ____________²ÄÁÏÖƳɡ£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2012-2013ѧÄêɽ¶«Ê¡ÔæׯÊÐỳÇÇøÎâÁÖ½ÖµÀÖÐѧ¾ÅÄ꼶£¨ÉÏ£©µÚÒ»´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

СÃ÷¼ÒÓÐÒ»¼þ¾«ÃÀµÄ¹¤ÒÕÆ·£¬ÎªÌ½¾¿Ëü¾¿¾¹ÊÇʲô²ÄÁÏÖÆ×÷µÄ£¬Ð¡Ã÷½øÐÐÁËÒÔÏÂʵÑ飺

£¨1£©ÓÃÌìƽ²âÁ¿¹¤ÒÕÆ·µÄÖÊÁ¿£®°ÑÓÎÂëÒÆÖÁ±ê³ß×ó¶ËµÄÁã¿Ì¶È´¦Ê±£¬·¢ÏÖÌìƽµÄÖ¸ÕëÈç¼×Ëùʾ£¬´ËʱӦ½«ºáÁºÓҶ˵ÄƽºâÂÝĸÏò______µ÷½Ú£»³ÆÁ¿µÄ¹ý³ÌÖУ¬µ±Ëû°ÑÒ»¸ö20g·ÅÈëÍÐÅÌʱָÕëÔÚ·Ö¶ÈÅÌÉÏ°Ú¶¯µÄ·¶Î§ÈçͼÒÒËùʾ£¬ËûµÄÏÂÒ»²½²Ù×÷ÊÇ______£»³öÏÖÕâÖÖÇé¿ö¾­¹ýÕýÈ·²Ù×÷£¬²âµÃ¹¤ÒÕÆ·ÖÊÁ¿ÈçͼËùʾΪ______g£®
һЩ½ðÊôµÄÃܶȣ¨³£Î³£Ñ¹Ï£©
ÎïÖÊÃû³ÆÃܶȦÑ/
½ð19.3×103
Òø10.5×103
Í­8.9×103
ÂÁ2.7×103
£¨2£©Í¨¹ýÆäËû;¾¶Öª¹¤ÒÕÆ·Ìå»ýÊÇ25cm3£®¶ÔÕÕÏÂ±í£¬¸Ã¹¤ÒÕÆ·¿ÉÄÜÊÇÓÉ______²ÄÁÏÖƳɵģ®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸