СÍõÉè¼ÆÁËÈçϲâÁ¿»¨ÉúÓÍÃܶȵķ½°¸£ºÔÚÉÕ±­ÄÚµ¹ÈëÊÊÁ¿µÄ»¨ÉúÓÍ£¬Óõ÷½ÚƽºâµÄÌìƽ²â³öÉÕ±­ºÍ»¨ÉúÓ͵Ä×ÜÖÊÁ¿m1£¬È»ºó½«ÉÕ±­ÄÚµÄÊÊÁ¿»¨ÉúÓ͵¹ÈëÁ¿Í²ÄÚ£¬ÔÙ²â³öÉÕ±­ºÍÊ£Ó໨ÉúÓ͵Ä×ÜÖÊÁ¿m2£¬¶Á³öÁ¿Í²ÄÚ»¨ÉúÓ͵ÄÌå»ýV£®
£¨1£©ÇëÔÚϱíÖÐÌîºÃÏà¹ØµÄÊý¾Ý£®
ÉÕ±­ºÍ»¨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
ÉÕ±­ºÍÊ£Ó໨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
ÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
Ìå»ý£¨cm3£©
Ó͵ÄÃܶÈ
£¨g/cm3£©

________

________

________

________

________
£¨2£©ÂèÂèÂòÀ´µÄһͰ»¨ÉúÓ͵ıêʾ×Å¡°¾»º¬Á¿£º5L¡±×ÖÑù£¬ÔòÕâÍ°»¨ÉúÓ͵ľ»ÖÊÁ¿ÊÇ________kg£®

½â£º£¨1£©ÓÉͼ1ËùʾÌìƽ¶Á³öÉÕ±­ºÍ»¨ÉúÓ͵Ä×ÜÖÊÁ¿£º
m1=50g+5g+2g+0.4g=57.4g£»
ÓÉͼ2ËùʾÌìƽ¶Á³öÉÕ±­ºÍÊ£Ó໨ÉúÓ͵Ä×ÜÖÊÁ¿£º
m2=20g+10g+3.4g=33.4g£»
ÓÉͼ3ËùʾÁ¿Í²¿ÉÒÔÇó³öµ¹³öÓ͵ÄÌå»ý£º
v=30ml=30cm3£»
µ¹³öÓ͵ÄÖÊÁ¿£º
m=m1-m2=57.4-33.4g=24g£»
Ó͵ÄÃܶȣº
¦Ñ===0.8g/cm3£®
£¨2£©±êʾ×Å¡°¾»º¬Á¿£º5L¡±×ÖÑù£¬
¼´v=5L=5¡Á103ml
¡ß¦Ñ=£¬
¡àÕâÍ°»¨ÉúÓ͵ľ»ÖÊÁ¿£º
m¡ä=¦Ñ¡äv¡ä=0.8g/cm3¡Á5¡Á103ml=4000g=4kg£®
¹Ê´ð°¸Îª£º£¨1£©
ÉÕ±­ºÍ»¨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
ÉÕ±­ºÍÊ£Ó໨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
ÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
Ìå»ý£¨cm3£©
Ó͵ÄÃܶÈ
£¨g/cm3£©
57.433.424300.8
£¨2£©4£®
·ÖÎö£º£¨1£©ÓÃÌìƽ²âÎïÌåÖÊÁ¿Ê±£¬ÎïÌåÖÊÁ¿µÈÓÚíÀÂëÓëÓÎÂëʾÊýÖ®ºÍ£¬ÓÉͼ1ËùʾÌìƽ¶Á³öÉÕ±­ºÍ»¨ÉúÓ͵Ä×ÜÖÊÁ¿m1£»ÓÉͼ2ËùʾÌìƽ¶Á³öÉÕ±­ºÍÊ£Ó໨ÉúÓ͵Ä×ÜÖÊÁ¿m2£»ÓÉͼ3ËùʾÁ¿Í²¿ÉÒÔÇó³öµ¹³öÓ͵ÄÌå»ý£»µ¹³öÓ͵ÄÖÊÁ¿m=m1-m2£¬È»ºóÓÉÃܶȹ«Ê½¿ÉÒÔÇó³öÓ͵ÄÃܶȣ®
£¨2£©¸ù¾ÝÃܶȵıäÐι«Ê½m=¦Ñv¿ÉÇó³ö»¨ÉúÓ͵ÄÖÊÁ¿£®
µãÆÀ£º±¾Ì⿼²éÁËÌìƽÓëÁ¿Í²µÄ¶ÁÊý¡¢Ãܶȹ«Ê½µÄÓ¦Óã¬ÒªÊìÁ·ÕÆÎÕ³£ÓòâÁ¿Æ÷²ÄµÄʹÓü°¶ÁÊý·½·¨£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2010?ÖêÖÞ£©Èçͼ1ËùʾµÄʵÑé×°ÖÿÉÒÔ̽¾¿¸Ü¸ËÊÜÁ½¸ö×èÁ¦£¨F2¡¢F3£©Ê±µÄƽºâÌõ¼þ£®ÔÚÒѵ÷½ÚºÃµÄ¸Ü¸ËÁ½¶Ë¹ÒÉϲ»Í¬ÊýÁ¿µÄ¹³Â룬²¢Êʵ±Òƶ¯¹³ÂëµÄλÖã¬Ê¹¸Ü¸Ëˮƽƽºâ£¬¼ÇϹ³ÂëµÄÊýÁ¿ºÍλÖã®Í¨¹ý¸Ä±ä¹³ÂëµÄÊýÁ¿ºÍλÖ㬰´ÕÕͬÑùµÄ·½·¨ÔÙ×öÁ½´Î£¬½«ÊµÑéµÃµ½µÄÊý¾ÝÌîÔÚ±íÖУ®±íÖÐÊý¾ÝÊÇÒÔÒ»¸ö¹³ÂëµÄÖØÁ¦ÎªÁ¦µÄµ¥Î»£¬ÒԸܸ˵ÄÿС¸ñΪ³¤¶ÈµÄµ¥Î»£®
ʵÑé´ÎÊý ¶¯Á¦F1 ¶¯Á¦±ÛL1 ¶¯Á¦F2 ¶¯Á¦±ÛL2 ¶¯Á¦F3 ¶¯Á¦±ÛL3
1 1 5 1 1 2 2
2 2 6 1 2 2 5
3 3 7 1 5 4 4
£¨1£©·ÖÎö±íÖеÄÊý¾Ý£¬¿ÉµÃ¸Ü¸ËµÄƽºâÌõ¼þÊÇ
F1l1=F2l2+F3l3
F1l1=F2l2+F3l3
£®£¨Ìîд¹Øϵʽ£©
£¨2£©ÔÚÅ©´å»¹¹ã·ºÊ¹Óõĸ˳ӾÍÀûÓÃÁËÉÏÊöÔ­Àí£®Í¼2ÊÇÒ»¸ù¸Ë³ÓµÄʾÒâͼ£®Ð¡ÔÆÉè¼ÆÁËÈçϲâÁ¿³ÓíÈÖÊÁ¿MµÄʵÑé·½°¸£¬ÇëÄ㽫¢Ú¡¢¢ÜÁ½²½²¹³äÍêÕû£®
¢ÙÓÿ̶ȳ߲âÁ¿¸Ë³ÓÉϵÄÖ÷Òª¿Ì¶ÈµÄʾÊýmµ½ÌáŤOµÄ¾àÀëx£¬²¢×÷³öm-x¹ØϵͼÏó£¬Èçͼ3Ëùʾ£®
¢ÚÓÿ̶ȳ߲âÁ¿¹Ò¹³µ½
ÌáŦ
ÌáŦ
µÄ¾àÀël£»
¢ÛÔÚm-x¹ØϵͼÏóÖÐÈÎÒâ¶ÁÈ¡Á½×éÊý¾Ýx1¡¢m1ºÍx2¡¢m2£»
¢ÜÉè¸Ë³Ó×ÔÖØG0£¬ÖØÐĵ½ÌáŤµÄ¾àÀël0£¬¾Ý¸Ü¸ËƽºâÌõ¼þMgx1=
m1gl
m1gl
+G0l0ÒÔ¼°
Mgx2
Mgx2
=m2gl+G0l0Á½Ê½Ïà¼õµÃ M=
(m2 -m1)l
x2 -x1
(m2 -m1)l
x2 -x1
£¨ÒªÇóÓÃl¡¢x1¡¢x2¡¢m1¡¢m2±íʾ£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

СÍõÉè¼ÆÁËÈçϲâÁ¿»¨ÉúÓÍÃܶȵķ½°¸£ºÔÚÉÕ±­ÄÚµ¹ÈëÊÊÁ¿µÄ»¨ÉúÓÍ£¬Óõ÷½ÚƽºâµÄÌìƽ²â³öÉÕ±­ºÍ»¨ÉúÓ͵Ä×ÜÖÊÁ¿m1£¬È»ºó½«ÉÕ±­ÄÚµÄÊÊÁ¿»¨ÉúÓ͵¹ÈëÁ¿Í²ÄÚ£¬ÔÙ²â³öÉÕ±­ºÍÊ£Ó໨ÉúÓ͵Ä×ÜÖÊÁ¿m2£¬¶Á³öÁ¿Í²ÄÚ»¨ÉúÓ͵ÄÌå»ýV£®
£¨1£©ÇëÔÚϱíÖÐÌîºÃÏà¹ØµÄÊý¾Ý£®
ÉÕ±­ºÍ»¨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
ÉÕ±­ºÍÊ£Ó໨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
ÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
Ìå»ý£¨cm3£©
Ó͵ÄÃܶÈ
£¨g/cm3£©
 
57.4
57.4
 
33.4
33.4
 
24
24

30
30
 

0.8
0.8
 
£¨2£©ÂèÂèÂòÀ´µÄһͰ»¨ÉúÓ͵ıêʾ×Å¡°¾»º¬Á¿£º5L¡±×ÖÑù£¬ÔòÕâÍ°»¨ÉúÓ͵ľ»ÖÊÁ¿ÊÇ
4
4
kg£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2010Äêɽ¶«Ê¡×Ͳ©ÊÐÁÙ×ÍÇøÖп¼ÎïÀíÄ£ÄâÊÔ¾í£¨ËÄ£© £¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

СÍõÉè¼ÆÁËÈçϲâÁ¿»¨ÉúÓÍÃܶȵķ½°¸£ºÔÚÉÕ±­ÄÚµ¹ÈëÊÊÁ¿µÄ»¨ÉúÓÍ£¬Óõ÷½ÚƽºâµÄÌìƽ²â³öÉÕ±­ºÍ»¨ÉúÓ͵Ä×ÜÖÊÁ¿m1£¬È»ºó½«ÉÕ±­ÄÚµÄÊÊÁ¿»¨ÉúÓ͵¹ÈëÁ¿Í²ÄÚ£¬ÔÙ²â³öÉÕ±­ºÍÊ£Ó໨ÉúÓ͵Ä×ÜÖÊÁ¿m2£¬¶Á³öÁ¿Í²ÄÚ»¨ÉúÓ͵ÄÌå»ýV£®
£¨1£©ÇëÔÚϱíÖÐÌîºÃÏà¹ØµÄÊý¾Ý£®
ÉÕ±­ºÍ»¨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
ÉÕ±­ºÍÊ£Ó໨ÉúÓÍ
µÄ×ÜÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
ÖÊÁ¿£¨g£©
µ¹³öÓ͵Ä
Ìå»ý£¨cm3£©
Ó͵ÄÃܶÈ
£¨g/cm3£©
 
______
 
______
 
______

______ 

______ 
£¨2£©ÂèÂèÂòÀ´µÄһͰ»¨ÉúÓ͵ıêʾ×Å¡°¾»º¬Á¿£º5L¡±×ÖÑù£¬ÔòÕâÍ°»¨ÉúÓ͵ľ»ÖÊÁ¿ÊÇ______kg£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º2010ÄêºþÄÏÊ¡ÖêÖÞÊÐÖп¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

Èçͼ1ËùʾµÄʵÑé×°ÖÿÉÒÔ̽¾¿¸Ü¸ËÊÜÁ½¸ö×èÁ¦£¨F2¡¢F3£©Ê±µÄƽºâÌõ¼þ£®ÔÚÒѵ÷½ÚºÃµÄ¸Ü¸ËÁ½¶Ë¹ÒÉϲ»Í¬ÊýÁ¿µÄ¹³Â룬²¢Êʵ±Òƶ¯¹³ÂëµÄλÖã¬Ê¹¸Ü¸Ëˮƽƽºâ£¬¼ÇϹ³ÂëµÄÊýÁ¿ºÍλÖã®Í¨¹ý¸Ä±ä¹³ÂëµÄÊýÁ¿ºÍλÖ㬰´ÕÕͬÑùµÄ·½·¨ÔÙ×öÁ½´Î£¬½«ÊµÑéµÃµ½µÄÊý¾ÝÌîÔÚ±íÖУ®±íÖÐÊý¾ÝÊÇÒÔÒ»¸ö¹³ÂëµÄÖØÁ¦ÎªÁ¦µÄµ¥Î»£¬ÒԸܸ˵ÄÿС¸ñΪ³¤¶ÈµÄµ¥Î»£®
ʵÑé´ÎÊý¶¯Á¦F1¶¯Á¦±ÛL1¶¯Á¦F2¶¯Á¦±ÛL2¶¯Á¦F3¶¯Á¦±ÛL3
1151122
2261225
3371544
£¨1£©·ÖÎö±íÖеÄÊý¾Ý£¬¿ÉµÃ¸Ü¸ËµÄƽºâÌõ¼þÊÇ______£®£¨Ìîд¹Øϵʽ£©
£¨2£©ÔÚÅ©´å»¹¹ã·ºÊ¹Óõĸ˳ӾÍÀûÓÃÁËÉÏÊöÔ­Àí£®Í¼2ÊÇÒ»¸ù¸Ë³ÓµÄʾÒâͼ£®Ð¡ÔÆÉè¼ÆÁËÈçϲâÁ¿³ÓíÈÖÊÁ¿MµÄʵÑé·½°¸£¬ÇëÄ㽫¢Ú¡¢¢ÜÁ½²½²¹³äÍêÕû£®
¢ÙÓÿ̶ȳ߲âÁ¿¸Ë³ÓÉϵÄÖ÷Òª¿Ì¶ÈµÄʾÊýmµ½ÌáŤOµÄ¾àÀëx£¬²¢×÷³öm-x¹ØϵͼÏó£¬Èçͼ3Ëùʾ£®
¢ÚÓÿ̶ȳ߲âÁ¿¹Ò¹³µ½______µÄ¾àÀël£»
¢ÛÔÚm-x¹ØϵͼÏóÖÐÈÎÒâ¶ÁÈ¡Á½×éÊý¾Ýx1¡¢m1ºÍx2¡¢m2£»
¢ÜÉè¸Ë³Ó×ÔÖØG£¬ÖØÐĵ½ÌáŤµÄ¾àÀël£¬¾Ý¸Ü¸ËƽºâÌõ¼þMgx1=______+GlÒÔ¼°______=m2gl+GlÁ½Ê½Ïà¼õµÃ M=______£¨ÒªÇóÓÃl¡¢x1¡¢x2¡¢m1¡¢m2±íʾ£©£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸