·ÖÎö £¨1£©²âÁ¿Ç°ÌìÆ½µÄµ÷½Ú£¬Ó¦½«Æ½ºâÂÝĸÏòÖ¸ÕëÆ«×ªµÄÏà·´·½ÏòÒÆ¶¯£»
£¨2£©ÊµÑéÄ¿µÄÊDzâÁ¿ÑÎË®µÄÃܶȣ¬»ù±¾ÔÀíÊǦÑ=$\frac{m}{V}$£»
£¨3£©²âÁ¿ÉÕ±ºÍ½´ÓÍ×ÜÖÊÁ¿£¬ÔÚ¶ÁÈ¡ÌìÆ½Ê¾ÊýʱӦ½«íÀÂëÖÊÁ¿ÓëÓÎÂë¶ÔÓ¦µÄʾÊýÏà¼Ó£»ÓÉÉÕ±µÄÖÊÁ¿£¬¿É¼ÆËã³ö½´Ó͵ÄÖÊÁ¿£¬¶Á³ö½´Ó͵ÄÌå»ý£»
´ÓʵÑé¹ý³Ì¿ÉÒÔ¿´³ö£¬²úÉúÎó²îµÄÖ÷ÒªÔÒòÊǽ«½´ÓÍ´ÓÉÕ±ÖÐÏòÁ¿Í²µ¹Ê±£¬»áÔÚÉÕ±±ÚÉϲÐÁôһЩ£¬ÖÂʹ½´Ó͵ÄÌå»ý²âÁ¿Æ«Ð¡£¬¸ù¾Ý¦Ñ=$\frac{m}{V}$Åж϶ԲâÁ¿½á¹ûµÄÓ°Ï죬´ÓÕâÒ»½Ç¶È¿¼ÂǸĽøÊµÑé·½°¸£®
½â´ð ½â£º£¨1£©µ÷½ÚÌìÆ½ºáÁºÊ±£¬Ö¸ÕëÆ«Ïò·Ö¶ÈÅ̵Ä×ó²à£¬ËµÃ÷×ó²àÖÊÁ¿Æ«´ó£¬Òò´Ë£¬Ó¦½«Æ½ºâÂÝĸÏòÓÒµ÷½Ú£»
£¨2£©ÓÉÌâÒ⣬½´ÓͶîµÄÖÊÁ¿m=m2-m1£¬½´ÓÍÃܶȦÑ=$\frac{m}{V}$=$\frac{{m}_{2}-{m}_{1}}{V}$£»
£¨3£©ÒÑÖª¿ÕÉÕ±µÄÖÊÁ¿£ºm1=37.4g£¬
ͼ2ÖУ¬ÓαêµÄ·Ö¶ÈֵΪ0.2A£¬ÓÎÂë¶ÔÓ¦µÄ¿Ì¶ÈΪ1.4A£¬ËùÒÔ£¬ÉÕ±ºÍ½´Ó͵Ä×ÜÖÊÁ¿£º
m2=50g+20g+10g+1.4g=81.4g£¬
Ôò½´Ó͵ÄÖÊÁ¿£º
m=m2-m1=81.4g-37.4g=44g£¬
ÓÉͼ֪½´Ó͵ÄÌå»ý£º
V¡Ö38cm3£¬
½´Ó͵ÄÃܶȣº
¦Ñ=$\frac{m}{V}$=$\frac{44g}{38c{m}^{3}}$=1.16g/cm3=1.1¡Á103kg/m3£»
ÔÚ½«ÉÕ±Öн´Ó͵¹ÈëÁ¿Í²ÖеĹý³ÌÖУ¬ÉÕ±Öв»±ÜÃâµÄÓн´ÓͲÐÁô£¬Ôò²âÁ¿µÄÌå»ýƫС£¬¸ù¾Ý¦Ñ=$\frac{m}{V}$¿ÉÖª£¬²âÁ¿µÄÃÜ¶ÈÆ«´ó£»
ΪÁ˱ÜÃ⽫ÉÕ±ÖеĽ´Ó͵¹ÈëÁ¿Í²Ê±£¬ÉÕ±±ÚÉÏÕ´ÓеĽ´ÓÍÓ°ÏìÌå»ýµÄ²âÁ¿£¬µ¼ÖÂÌå»ýƫС£¬
ʵÑéʱ£¬Ó¦ÏȲâÉÕ±Óë½´Ó͵Ä×ÜÖÊÁ¿£¬ÔÙ½«Æäµ¹ÈëÁ¿Í²ÖвâÁ¿Ìå»ý£¬ÔÙ²âÉÕ±¼°Ê£ÓུÓ͵ÄÖÊÁ¿£¬ÕâÑù¿É¼õСÎó²îµÄ²úÉú£¬¹ÊÕýȷ˳ÐòΪ£ºBCA£®
ÕâÊÇͨ¹ý¸Ä½ø²âÁ¿·½·¨À´¼õСÎó²îµÄ£®
¹Ê´ð°¸Îª£º£¨1£©ÓÒ£»
£¨2£©$\frac{{m}_{2}-{m}_{1}}{V}$£»
£¨3£©81.4£»38£»Æ«´ó£»BCA£»¸Ä½ø²âÁ¿·½·¨£®
µãÆÀ ±¾Ìâ²â¶¨½´Ó͵ÄÃܶȣ¬¿¼²éÌìÆ½µÄµ÷½Ú¡¢¶ÔʵÑéÎó²îµÄ·ÖÎö¼°¶ÔʵÑé·½°¸µÄ¸Ä½ø£¬ÊÇÖп¼µÄÈȵãÌâÐÍ£®
| Äê¼¶ | ¸ßÖÐ¿Î³Ì | Äê¼¶ | ³õÖÐ¿Î³Ì |
| ¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍÆ¼ö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍÆ¼ö£¡ |
| ¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍÆ¼ö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍÆ¼ö£¡ |
| ¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍÆ¼ö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍÆ¼ö£¡ |
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | СµÆÅÝ | B£® | µç·çÉÈ | C£® | µç´Å¯ | D£® | µçÁ¦»ð³µ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º×÷ͼÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | ÓԱÔÚÌ«¿ÕÖÐÄܽ»Á÷£¬ËµÃ÷ÉùÒô¿ÉÒÔÔÚÕæ¿ÕÖд«²¥ | |
| B£® | ÕýÔÚ·¢ÉùµÄÎïÌå½Ð×öÉùÔ´ | |
| C£® | ÉùËٵĴóСÓë½éÖʵÄζÈÓÐ¹Ø | |
| D£® | ÉùÒôÔÚË®ÖеĴ«²¥ËٶȱÈÔÚ¿ÕÆøÖеĴ«²¥ËÙ¶È´ó |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¼ÆËãÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑé̽¾¿Ìâ
| ʵÑé´ÎÊý | ½µÂäɡɡÉþ³¤ | ½µÂäÉ¡µÄÐÎ×´ | ½µÂäÉ¡µÄÃæ»ý | ½µÂäÉ¡µÄ¸ß¶È | ½µÂäÉ¡×ÜÖØÁ¿ | ½µÂäÉ¡ÖÍÁôµÄʱ¼ä |
| 1 | 1m | Ô²ÐÎ | 0.5m2 | 3m | 20g | 3.67s |
| 2 | 1m | Ô²ÐÎ | 1m2 | 3m | 20g | 5.82s |
| 3 | 1m | Ô²ÐÎ | 1m2 | 3m | 30g | 4.91s |
| 4 | 1m | Õý·½ÐÎ | 1m2 | 3m | 20g | 5.81s |
| 5 | 1.5m | Õý·½ÐÎ | 1m2 | 3m | 20g | 5.83s |
| 6 | 1.5m | Õý·½ÐÎ | 1m2 | 6m | 20g | 9.24s |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¹ú¼ÊѧУÓÅÑ¡ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com