СºìºÍС¸ÕÈ¥º£±ßÊ°µ½Ò»¿éƯÁÁµÄСʯ¿é£¬Ð¡ºì˵£º¡°ÎÒÃDzâÒ»ÏÂÕâ¿éʯͷµÄÃܶȺÃô£¿¡±Ð¡¸Õ˵£º¡°¿ÉÒÔ£¬µ«ÎÒÃÇÒªÓò»Í¬µÄ·½·¨²â¶¨£®¡±
£¨1£©Ð¡ºìÑ¡Á˵¯»É²âÁ¦¼Æ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïߣ¬Ëý×öÁËÈçϵÄʵÑ飺
¢ÙÈçͼ1ËýÊ×ÏȲâÔÚ¿ÕÆøÖÐʯ¿éµÄÖØÁ¦£¬ÇëÄã¶Á³öµ¯»É²âÁ¦¼ÆµÄʾÊýF1=________N£®
¢ÚËýÓÖ½«Ê¯¿é½þûÔÚ×°Ë®µÄÉÕ±­ÖУ¬²â³öÁ˵¯»É²âÁ¦¼ÆµÄʾÊýF2=________N£®
¢ÛÇëÄã¼ÆËã³öʯ¿éµÄÃܶÈ=________£®
£¨2£©Ð¡¸ÕÑ¡ÁËÌìƽ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïß×öÁËÈçϵÄʵÑ飺

¢ÙËûÓÃÌìƽ³Æ³öʯ¿éµÄÖÊÁ¿=________g£®
¢ÚËûÓÃÌìƽ³Æ³öÉÕ±­ºÍË®µÄÖÊÁ¿=________g£®
¢ÛËûÓÃϸÏß½«Ê¯¿é°óºÃÐüµõÔÚË®ÖУ¬Ììƽʧȥƽºâ£®ËûÔö¼ÓíÀÂ룬ÌìƽÖØÐÂƽºâ£¬¶Á³öµÚ¶þ´ÎÌìƽµÄÖÊÁ¿=________g£®
¢ÜÇëÄã°ïËûËã³öʯ¿éµÄÃܶÈ=________£®

½â£º£¨1£©ÓÉͼ֪£¬²âÁ¦¼ÆµÄ·Ö¶ÈֵΪ0.2N£¬ËùÒÔÔÚ¿ÕÆøÖÐʱ²âÁ¦¼ÆµÄʾÊý¼´ÖØÁ¦Îª5.4N£¬ÍêÈ«½þûÔÚË®ÖÐʱ£¬²âÁ¦¼ÆµÄʾÊýΪ3.4N£¬ÔòF¸¡=G-F=5.4N-3.4N=2N
ÎïÌåµÄÖÊÁ¿m===0.54kg
ÓÉF¸¡=¦ÑË®gVÅŵã¬V=VÅÅ===2¡Á10-4m3
ÎïÌåµÄÃܶȦÑ===2.7¡Á103kg/m3£®
¹Ê´ð°¸Îª£º5.4£»3.4£»2.7¡Á103kg/m3£®
£¨2£©ÓÉͼ֪£¬ÎïÌåµÄÖÊÁ¿Îªm=50g+4g=54g
ÉÕ±­ºÍË®µÄ×ÜÖÊÁ¿Îªm¡ä=100g
ʯ¿é½þÈëË®ÖÐʱÌìƽµÄ¶ÁÊýΪm¡å=120g
ËùÒÔF¸¡=£¨m¡å-m¡ä£©g=£¨120-100£©¡Á10-3kg¡Á10N/kg=0.2N
ÔòV=VÅÅ===0.2¡Á10-4kg/m3
Ôò¦Ñ===2.7¡Á103kg/m3
¹Ê´ð°¸Îª£º54£»100£»120£»2.7¡Á103kg/m3£®
·ÖÎö£ºÒª½â¾ö´ËÌ⣬ÐèÒªÕÆÎÕ²âÁ¿¹ÌÌåÃܶȵķ½·¨£¬ÕÆÎÕÃܶȵļÆË㹫ʽ¦Ñ=£®
ÔÚ£¨1£©ÎÊÖУ¬¸ù¾ÝÔÚ¿ÕÆøÖеÄÖØÁ¦ºÍÍêÈ«½þûʱµÄÖØÁ¦¼ÆËã³ö¸¡Á¦£¬¸ù¾Ý¹«Ê½F¸¡=¦ÑÒºgVÅżÆËã³öÎïÌåµÄÌå»ý£»¸ù¾ÝÖØÁ¦µÄ¼ÆË㹫ʽG=mg¼ÆËã³öÖÊÁ¿£¬´Ó¶ø¸ù¾ÝÃܶȹ«Ê½¼ÆËã³öÆäÃܶȣ®
ÔÚ£¨2£©ÎÊÖУ¬Ê×ÏÈÓÉÌìƽ²â³öÎïÌåµÄÖÊÁ¿£¬Í¨¹ýºóÁ½·ùͼ¼ÆËã³öÔö¼ÓµÄÖØÁ¦¼´¸¡Á¦£¬´Ó¶ø¸ù¾Ý¸¡Á¦¹«Ê½¼ÆËã³öÎïÌåµÄÌå»ý£¬×îºó¼ÆËã³öÎïÌåµÄÃܶȣ®
µãÆÀ£º´ËÌâÊDzâÁ¿ÎïÌåµÄÃܶÈʵÑ飬ÔÚʵÑéÖÐÖ÷Òª¿¼²éÁ˶ÔÌìƽµÄ¶ÁÊý¼°¸ù¾Ý¸¡Á¦¼ÆËãÌå»ýµÄÒ»ÖÖ·½·¨£¬Ê×ÏÈÒª¼ÇÊ측Á¦¹«Ê½£¬²¢ÄܶԹ«Ê½½øÐÐÁé»îµØ±äÐΣ®Ìرð×¢ÒâÔÚ£¨2£©ÖУ¬µ¯»É²âÁ¦¼ÆµÄʾÊýF²»ÊÇ¿óʯµÄÖØÁ¦G£¬Ò²²»ÊÇ¿óʯµÄ¸¡Á¦F¸¡£®¶øÊÇF=G-F¸¡£¬F¸¡Ó¦¸ÃÊÇ×óÅÌÊܵ½µÄѹÁ¦µÄÔö¼ÓÁ¿£¬¼´ÓÒÅÌíÀÂëÔö¼ÓÁ¿¶ÔÓ¦µÄÖØÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2010?º£µíÇøһģ£©Ð¡ºìºÍС¸ÕÈ¥º£±ßÊ°µ½Ò»¿éƯÁÁµÄСʯ¿é£¬Ð¡ºì˵£º¡°ÎÒÃDzâÒ»ÏÂÕâ¿éʯͷµÄÃܶȺÃô£¿¡±Ð¡¸Õ˵£º¡°¿ÉÒÔ£¬µ«ÎÒÃÇÒªÓò»Í¬µÄ·½·¨²â¶¨£®¡±
£¨1£©Ð¡ºìÑ¡Á˵¯»É²âÁ¦¼Æ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïߣ¬Ëý×öÁËÈçϵÄʵÑ飺
¢ÙÈçͼ1ËýÊ×ÏȲâÔÚ¿ÕÆøÖÐʯ¿éµÄÖØÁ¦£¬ÇëÄã¶Á³öµ¯»É²âÁ¦¼ÆµÄʾÊýF1=
5.4
5.4
N£®
¢ÚËýÓÖ½«Ê¯¿é½þûÔÚ×°Ë®µÄÉÕ±­ÖУ¬²â³öÁ˵¯»É²âÁ¦¼ÆµÄʾÊýF2=
3.4
3.4
N£®
¢ÛÇëÄã¼ÆËã³öʯ¿éµÄÃܶÈ=
2.7¡Á103kg/m3
2.7¡Á103kg/m3
£®
£¨2£©Ð¡¸ÕÑ¡ÁËÌìƽ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïß×öÁËÈçϵÄʵÑ飺

¢ÙËûÓÃÌìƽ³Æ³öʯ¿éµÄÖÊÁ¿=
54
54
g£®
¢ÚËûÓÃÌìƽ³Æ³öÉÕ±­ºÍË®µÄÖÊÁ¿=
100
100
g£®
¢ÛËûÓÃϸÏß½«Ê¯¿é°óºÃÐüµõÔÚË®ÖУ¬Ììƽʧȥƽºâ£®ËûÔö¼ÓíÀÂ룬ÌìƽÖØÐÂƽºâ£¬¶Á³öµÚ¶þ´ÎÌìƽµÄÖÊÁ¿=
120
120
g£®
¢ÜÇëÄã°ïËûËã³öʯ¿éµÄÃܶÈ=
2.7¡Á103kg/m3
2.7¡Á103kg/m3
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2004-2005Äê±±¾©º£µíÇøµÚÒ»´ÎÄ£ÄâÊÔ¾í¡¢ÎïÀí ÌâÐÍ£º058

СºìºÍС¸ÕÈ¥º£±ßÊ°µ½Ò»¿éƯÁÁµÄСʯ¿é£¬Ð¡ºì˵£º¡°ÎÒÃDzâÒ»ÏÂÕâ¿éʯͷµÄÃܶȺÃô£¿¡±Ð¡¸Õ˵£º¡°¿ÉÒÔ£¬µ«ÎÒÃÇÒªÓò»Í¬µÄ·½·¨²â¶¨£®¡±

(1)

СºìÑ¡Á˵¯»É²âÁ¦¼Æ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïߣ¬Ëý×öÁËÈçϵÄʵÑ飺

¢ÙÈçͼËùʾËýÊ×ÏȲâÔÚ¿ÕÆøÖÐʯ¿éµÄÖØÁ¦£¬ÇëÄã¶Á³öµ¯»É²âÁ¦¼ÆµÄʾÊýF1£½_______N£®

¢ÚËýÓÖ½«Ê¯¿é½þûÔÚ×°Ë®µÄÉÕ±­ÖУ¬²â³öÁ˵¯»É²âÁ¦¼ÆµÄʾÊýF2£½________N£®

¢ÛÇëÄã¼ÆËã³öʯ¿éµÄÃܶȦѣ½________kg/lm3£®(g£½10 N/gk)

(2)

С¸ÕÑ¡ÁËÌìƽ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïß×öÁËÈçϵÄʵÑ飺

¢ÙËûÓÃÌìƽ³Æ³öʯ¿éµÄÖÊÁ¿m1£½________g£®

¢ÚËûÓÃÌìƽ³Æ³öÉÕ±­ºÍË®µÄÖÊÁ¿m2£½________g£®

¢ÛËûÓÃϸÏß½«Ê¯¿é°óºÃÐüµõÔÚË®ÖУ¬Ììƽʧȥƽºâ£®ËûÔö¼ÓíÀÂ룬ÌìƽÖØÐÂƽºâ£¬¶Á³öµÚ¶þ´ÎÌìƽµÄÖÊÁ¿m3£½________g£®

¢ÜÇëÄã°ïËûËã³öʯ¿éµÄÃܶȦÑ=________kg/m3£®(g£½10 N/kg)

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2005Äê±±¾©Êк£µíÇøÖп¼ÎïÀíһģÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

СºìºÍС¸ÕÈ¥º£±ßÊ°µ½Ò»¿éƯÁÁµÄСʯ¿é£¬Ð¡ºì˵£º¡°ÎÒÃDzâÒ»ÏÂÕâ¿éʯͷµÄÃܶȺÃô£¿¡±Ð¡¸Õ˵£º¡°¿ÉÒÔ£¬µ«ÎÒÃÇÒªÓò»Í¬µÄ·½·¨²â¶¨£®¡±
£¨1£©Ð¡ºìÑ¡Á˵¯»É²âÁ¦¼Æ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïߣ¬Ëý×öÁËÈçϵÄʵÑ飺
¢ÙÈçͼ1ËýÊ×ÏȲâÔÚ¿ÕÆøÖÐʯ¿éµÄÖØÁ¦£¬ÇëÄã¶Á³öµ¯»É²âÁ¦¼ÆµÄʾÊýF1=______N£®
¢ÚËýÓÖ½«Ê¯¿é½þûÔÚ×°Ë®µÄÉÕ±­ÖУ¬²â³öÁ˵¯»É²âÁ¦¼ÆµÄʾÊýF2=______N£®
¢ÛÇëÄã¼ÆËã³öʯ¿éµÄÃܶÈ=______£®
£¨2£©Ð¡¸ÕÑ¡ÁËÌìƽ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïß×öÁËÈçϵÄʵÑ飺

¢ÙËûÓÃÌìƽ³Æ³öʯ¿éµÄÖÊÁ¿=______g£®
¢ÚËûÓÃÌìƽ³Æ³öÉÕ±­ºÍË®µÄÖÊÁ¿=______g£®
¢ÛËûÓÃϸÏß½«Ê¯¿é°óºÃÐüµõÔÚË®ÖУ¬Ììƽʧȥƽºâ£®ËûÔö¼ÓíÀÂ룬ÌìƽÖØÐÂƽºâ£¬¶Á³öµÚ¶þ´ÎÌìƽµÄÖÊÁ¿=______g£®
¢ÜÇëÄã°ïËûËã³öʯ¿éµÄÃܶÈ=______£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2010Äê±±¾©Êк£µíÇøÖп¼ÎïÀíһģÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

СºìºÍС¸ÕÈ¥º£±ßÊ°µ½Ò»¿éƯÁÁµÄСʯ¿é£¬Ð¡ºì˵£º¡°ÎÒÃDzâÒ»ÏÂÕâ¿éʯͷµÄÃܶȺÃô£¿¡±Ð¡¸Õ˵£º¡°¿ÉÒÔ£¬µ«ÎÒÃÇÒªÓò»Í¬µÄ·½·¨²â¶¨£®¡±
£¨1£©Ð¡ºìÑ¡Á˵¯»É²âÁ¦¼Æ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïߣ¬Ëý×öÁËÈçϵÄʵÑ飺
¢ÙÈçͼ1ËýÊ×ÏȲâÔÚ¿ÕÆøÖÐʯ¿éµÄÖØÁ¦£¬ÇëÄã¶Á³öµ¯»É²âÁ¦¼ÆµÄʾÊýF1=______N£®
¢ÚËýÓÖ½«Ê¯¿é½þûÔÚ×°Ë®µÄÉÕ±­ÖУ¬²â³öÁ˵¯»É²âÁ¦¼ÆµÄʾÊýF2=______N£®
¢ÛÇëÄã¼ÆËã³öʯ¿éµÄÃܶÈ=______£®
£¨2£©Ð¡¸ÕÑ¡ÁËÌìƽ¡¢ÉÕ±­¡¢Ë®¡¢Ï¸Ïß×öÁËÈçϵÄʵÑ飺

¢ÙËûÓÃÌìƽ³Æ³öʯ¿éµÄÖÊÁ¿=______g£®
¢ÚËûÓÃÌìƽ³Æ³öÉÕ±­ºÍË®µÄÖÊÁ¿=______g£®
¢ÛËûÓÃϸÏß½«Ê¯¿é°óºÃÐüµõÔÚË®ÖУ¬Ììƽʧȥƽºâ£®ËûÔö¼ÓíÀÂ룬ÌìƽÖØÐÂƽºâ£¬¶Á³öµÚ¶þ´ÎÌìƽµÄÖÊÁ¿=______g£®
¢ÜÇëÄã°ïËûËã³öʯ¿éµÄÃܶÈ=______£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸