·ÖÎö £¨1£©¸ù¾Ý´óÆøÑ¹Ç¿Çó½âÒºÌåÁ½²à×î´ó¸ß¶È²î£¬ÔÙ¸ù¾ÝÒºÌåÌå»ýÕâÒ»²»±äÁ¿¼´¿É½â¾öÎÊÌ⣻
£¨2£©½áºÏÄÜÁ¿Êغ㶨Âɼ´¿ÉÇó½â£»
½â´ð ½â£º£¨1£©´Ó¿ªÊ¼ÌáÉýµ½»îÈûÉýÖÁÁ½¹ÜÖÐË®Ãæ¸ß¶È²îΪ${h}_{0}^{\;}=\frac{{p}_{0}^{\;}}{¦Ñg}=10m$µÄ¹ý³ÌÖУ¬»îÈûʼÖÕÓë¹ÜÄÚÒºÌå½Ó´¥£¬Éè´Ë¹ý³Ì»îÈûÉÏÉý¸ß¶ÈΪ${h}_{1}^{\;}$£¬ÓÒ¹ÜÒºÃæÏ½µ¸ß¶ÈΪ${h}_{2}^{\;}$
${h}_{0}^{\;}={h}_{1}^{\;}+{h}_{2}^{\;}$
ÒòÒºÌåÌå»ý²»±ä£¬ÓУº${h}_{1}^{\;}•{l}_{1}^{2}$=${h}_{2}^{\;}•{l}_{2}^{2}$
ÌâÖÐÓУº${l}_{2}^{\;}=2{l}_{1}^{\;}$
ÁªÁ¢²¢´úÈëÊý¾Ý¿É½âµÃ£º${h}_{1}^{\;}=8.0m$
Ìâ¸øh=10.0m$£¾{h}_{1}^{\;}$£¬ÓÉ´Ë¿ÉÖª»îÈûÏòÉÏÒÆ¶¯8.0mºó£¬½«²»ÔÙÓëË®Ãæ½Ó´¥£®
£¨2£©»ºÂýÒÆ¶¯»îÈû¾àÀëΪ${h}_{1}^{\;}$µÄ¹ý³ÌÖУ¬¶ÔÓÚË®ºÍ»îÈûÕâ¸öÕûÌ壬»úеÄܵÄÔöÁ¿µÈÓÚÖØÁ¦ÊÆÄܵÄÔöÁ¿£¬¼´
$¡÷{E}_{p}^{\;}$=¦Ñ$£¨{h}_{1}^{\;}{l}_{1}^{2}£©$g$\frac{{h}_{0}^{\;}}{2}$
ÒòÒºÌå²»¿ÉѹËõ£¬ËùÒÔ´óÆøÑ¹Á¦×öµÄ×ܹ¦${p}_{0}^{\;}{l}_{2}^{2}{h}_{2}^{\;}-{p}_{0}^{\;}{l}_{1}^{2}{h}_{1}^{\;}=0$
¹Ê³ýÖØÁ¦ÍâÆäËüÍâÁ¦×öµÄ×ܹ¦µÈÓÚÀÁ¦F×öµÄ¹¦${W}_{1}^{\;}$£¬Óɹ¦ÄܹØÏµÖª
${W}_{1}^{\;}=¡÷{E}_{p}^{\;}$
´úÈëÊý¾Ý¿É½âµÃ£º${W}_{1}^{\;}=4.0¡Á1{0}_{\;}^{3}J$
»îÈûÒÆ¶¯¾àÀë´Ó${h}_{1}^{\;}$µ½hµÄ¹ý³ÌÖУ¬ÒºÃæ²»±ä£¬FÊǺãÁ¦£¬ÇÒF=${p}_{0}^{\;}{l}_{1}^{2}$
F×öµÄ¹¦£º${W}_{2}^{\;}=F£¨h-{h}_{1}^{\;}£©={p}_{0}^{\;}{l}_{1}^{2}£¨h-{h}_{1}^{\;}£©$=$0.5¡Á1{0}_{\;}^{3}J$
ËùÇóÀÁ¦F×öµÄ×ܹ¦Îª${W}_{1}^{\;}+{W}_{2}^{\;}$=$4.5¡Á1{0}_{\;}^{3}J$
´ð£º£¨1£©»îÈû²»Ò»Ö±ºÍË®Ãæ½Ó´¥£»
£¨2£©Á¦FËù×öµÄ¹¦Îª$4.5¡Á1{0}_{\;}^{3}$J
µãÆÀ ±¾ÌâÓÐÒ»¶¨µÄÄѶȣ¬¹Ø¼üÊÇҪעÒâµÚ¶þÎÊÖиù¾Ý¹¦ÄܹØÏµÇó½â£¬ÒªÖªµÀÄÄЩÄÜÁ¿²ÎÓëת»¯£®
| 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¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | Á¦¿ÉÒÔÖ»ÓÐÊ©Á¦ÎïÌå¶øÃ»ÓÐÊÜÁ¦Îï | |
| B£® | ´óС£¬·½Ïò¶¼ÏàͬµÄÁ¦£¬×÷ÓÃЧ¹ûÒ»¶¨Ïàͬ | |
| C£® | Á¦ÊÇʸÁ¿£¬¼ÈÓдóСÓÖÓз½Ïò | |
| D£® | Ö»ÓÐÏ໥½Ó´¥µÄÎïÌåÖ®¼ä²Å¿ÉÄÜ´æÔÚÁ¦µÄ×÷Óà |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÊµÑéÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ
| A£® | ÀÁ¦´óСΪF=$\frac{{B}^{2}{L}_{2}^{2}v}{R}$ | |
| B£® | ÀÁ¦µÄ¹¦ÂÊΪp=$\frac{{B}^{2}{L}_{2}^{2}v}{R}$ | |
| C£® | ÏßȦÖвúÉúµÄµçÈÈΪQ=$\frac{{B}^{2}{L}_{1}^{2}{L}_{2}v}{R}$ | |
| D£® | ͨ¹ýÏßȦij½ØÃæµÄµçºÉÁ¿Îªq=$\frac{B{L}_{2}{L}_{1}}{R}$ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | ÑØµç³¡Ïß·½Ïòµç³¡Ç¿¶ÈÔ½À´Ô½Ð¡ | |
| B£® | ¾²µç³¡ÖÐijµãµÄµç³¡Ç¿¶ÈΪÁ㣬Ôò¸ÃµãµçÊÆ±ØÈ»Ò²ÎªÁã | |
| C£® | µÈÊÆÃæÒ»¶¨Óëµç³¡Ç¿¶ÈµÄ·½Ïò´¹Ö± | |
| D£® | ³õËÙ¶ÈΪÁãµÄ´øµçÁ£×ÓÔڵ糡ÖÐÒ»¶¨Ñص糡ÏßÔ˶¯ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | £¨sin¦È£©${\;}^{\frac{2}{3}}$Äê | B£® | £¨sin¦È£©${\;}^{\frac{3}{2}}$Äê | C£® | £¨cos¦È£©${\;}^{\frac{2}{3}}$Äê | D£® | £¨cos¦È£©${\;}^{\frac{3}{2}}$Äê |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¼ÆËãÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¼ÆËãÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | ÎïÌå×öÔÈËÙÂÊÔ˶¯²¢²»ÐèÒªÁ¦À´Î¬³Ö | |
| B£® | Èç¹ûÎïÌå²»Êܵ½Á¦£¬¾Í²»»áÔ˶¯ | |
| C£® | ¹ý³ÌÖÐСÇòµÄλÖÃÔ½¸ß»úеÄÜÔ½´ó | |
| D£® | СÇòÔ˶¯µ½³ö·¢Ê±¸ß¶ÈµÄÒ»°ëʱ£¬¶¯ÄܺÍÊÆÄÜÏàµÈ |
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