·ÖÎö £¨1£©¸ù¾Ý¶¯Äܶ¨ÀíÇó½âµç×Ó½øÈËÆ«×ªµç³¡µÄ³õ¶¯ÄÜ£»
£¨2£©¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÇó½â¼ÓËÙ¶È´óС£¬ÒªÊ¹µç×ÓÄܷɳöƫת°å£¬×î´óÆ«ÒÆÁ¿Îª$\frac{d}{2}$£¬¸ù¾ÝÀàÆ½Å×Ô˶¯Çó½â×î´óƫתµçѹ£»
£¨3£©¸ù¾ÝƽÅ×Ô˶¯µÄ¹æÂÉÇó½âµç×ӸպôòÔÚÓ«¹âÆÁ±ßԵʱµç×ÓÉä³öƫתµç³¡µÄ²àÒÆÁ¿£¬ÔÙ¸ù¾ÝÀàÆ½Å×Ô˶¯µÄ֪ʶÇó½âƫתµç³¡YY¡äÁ½¼«Ëù¼ÓµÄ×î´óµçѹÊǶàÉÙ£®
½â´ð ½â£º£¨1£©³õ¶¯Äܼ´Îª¼ÓËٵ糡¶Ôµç×Ó×öµÄ¹¦
Ek=eU1=2500eV£»
£¨2£©ÔÚÆ«×ª¼«°å¼äºáÏòΪÔÈËÙÖ±ÏßÔ˶¯£¬×ÝÏòΪÔȼÓËÙÖ±Ïߣ¬¶þÕßÓÃʱÏàͬ£¬
ÉèˮƽµÄËÙ¶ÈΪv0£¬Ôò£ºeU1=$\frac{1}{2}m{v}_{0}^{2}$£¬
Éä³öƫתµç³¡µÄʱ¼äΪ£º$t=\frac{l}{{v}_{0}}$£¬
×ÝÏò¼ÓËÙ¶È£º$a=\frac{e{U}_{2}}{md}$£¬
×î´óÆ«×ªÎ»ÒÆÎª£º$y=\frac{d}{2}=\frac{1}{2}a{t}^{2}$£¬
¼´£º$\frac{d}{2}=\frac{1}{2}•\frac{e{U}_{2}}{md}•\frac{{l}^{2}}{{v}_{0}^{2}}=\frac{{U}_{2}{l}^{2}}{4{U}_{1}d}$£¬
Ҫʹµç×Ó¿ÉÒԷɳö¼«°å£¬ÔòƫתµçѹU2=$\frac{2{U}_{1}{d}^{2}}{{i}^{2}}=\frac{2¡Á2500¡Á0.0{2}^{2}}{0.0{4}^{2}}V=1250V$£»
£¨3£©Á£×Ó´¦Æ«×ªµç³¡Ê±ËÙ¶È·½Ïò·´ÏòÑÓ³¤Ïß¹ýË®Æ½Î»ÒÆµÄÖе㣬¸ÕºÃ´òÔÚÓ«¹âÆÁµÄ±ßԵʱ£¬¹ì¼£ÈçͼËùʾ£»![]()
¸ù¾Ý¼¸ºÎ¹ØÏµ¿ÉµÃ£º$\frac{y¡ä}{\frac{d¡ä}{2}}=\frac{\frac{l}{2}}{\frac{l}{2}+l¡ä}$£¬
´úÈëÊý¾Ý½âµÃ£º$y¡ä=\frac{2}{3}cm$£»
Éè´ËʱµÄƫתµçѹΪU¡ä2£¬Ôò¸ù¾ÝÀàÆ½Å×Ô˶¯¿ÉµÃ£º
$y¡ä=\frac{1}{2}•\frac{e{U¡ä}_{2}}{md}•\frac{{l}^{2}}{{v}_{0}^{2}}=\frac{{U¡ä}_{2}{l}^{2}}{4{U}_{1}d}$£¬
½âµÃ£ºU2¡ä=833V£®
´ð£º£¨1£©µç×Ó½øÈëÆ«×ªµç³¡µÄ³õ¶¯ÄÜΪ2500eV£»
£¨2£©ÒªÊ¹µç×ÓÄܷɳöƫת°å£¬Æ«×ªµç³¡Á½¼«YY¡äËù¼Ó×î´óµçѹΪ1250V£»
£¨3£©ÒªÊ¹µç×ÓÄÜ´òÔÚÓ«¹âÆÁÉÏ£¬Æ«×ªµç³¡YY¡äÁ½¼«Ëù¼ÓµÄ×î´óµçѹÊÇ833V£®
µãÆÀ ÓйشøµçÁ£×ÓÔÚÔÈÇ¿µç³¡ÖеÄÔ˶¯£¬¿ÉÒÔ´ÓÁ½ÌõÏßË÷Õ¹¿ª£ºÆäÒ»£¬Á¦ºÍÔ˶¯µÄ¹ØÏµ£®¸ù¾Ý´øµçÁ£×ÓÊÜÁ¦Çé¿ö£¬ÓÃÅ£¶ÙµÚ¶þ¶¨ÂÉÇó³ö¼ÓËÙ¶È£¬½áºÏÔ˶¯Ñ§¹«Ê½È·¶¨´øµçÁ£×ÓµÄËٶȺÍÎ»ÒÆµÈ£»Æä¶þ£¬¹¦ºÍÄܵĹØÏµ£®¸ù¾Ýµç³¡Á¦¶Ô´øµçÁ£×Ó×ö¹¦£¬ÒýÆð´øµçÁ£×ÓµÄÄÜÁ¿·¢Éú±ä»¯£¬ÀûÓö¯Äܶ¨Àí½øÐнâ´ð£®
| 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£® | ǰÁ½Ãë¼ÓËÙ¶ÈΪ5 m/s2 | B£® | 4 sÄ©ÎïÌ廨µ½³ö·¢µã | ||
| C£® | 6 sÄ©ÎïÌå¾à³ö·¢µã×îÔ¶ | D£® | 8 sÄ©ÎïÌå¾à³ö·¢µã×îÔ¶ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | 3B¦ØL2 | B£® | 4B¦ØL2 | C£® | 7.5B¦ØL2 | D£® | 8B¦ØL2 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¼ÆËãÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | ³õËÙ¶È | B£® | ¶¯Á¿£¨mv£© | C£® | ¶¯ÄÜ | D£® | ÖÊÁ¿ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ
| A£® | Èô t=0 ʱ¿ÌÊͷŵç×Ó£¬µç×ÓʼÖÕÏòÓÒÔ˶¯£¬Ö±µ½´òµ½ÓÒ¼«°åÉÏ | |
| B£® | Èô t=0 ʱ¿ÌÊͷŵç×Ó£¬µç×Ó¿ÉÄÜÔÚÁ½°å¼äÕñ¶¯ | |
| C£® | Èô t=$\frac{T}{4}$ ʱ¿ÌÊͷŵç×Ó£¬µç×Ó¿ÉÄÜÔÚÁ½°å¼äÕñ¶¯£¬Ò²¿ÉÄÜ´òµ½ÓÒ¼«°åÉÏ | |
| D£® | Èô t=$\frac{3T}{8}$ ʱ¿ÌÊͷŵç×Ó£¬µç×Ó±ØÈ»´òµ½×󼫰åÉÏ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
| A£® | EA£¼EC | B£® | EB£¾ED | C£® | EC£¼ED | D£® | ED£¼EA |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¶àÑ¡Ìâ
| A£® | ǰÄÚ²àÃæµÄµçÊÆÒ»¶¨µÍÓÚºóÄÚ²àÃæµÄµçÊÆ£¬ÓëÄÄÖÖÀë×Ó¶àÎÞ¹Ø | |
| B£® | ÈôÎÛË®ÖÐÕýÀë×ӽ϶࣬ÔòǰÄÚ²àÃæ±ÈºóÄÚ²àÃæµÄµçÊÆ¸ß | |
| C£® | ÎÛË®ÖÐÀë×ÓŨ¶ÈÔ½¸ß£¬µçѹ±íµÄʾÊýÔ½´ó | |
| D£® | ÎÛË®Á÷Á¿QÓëµçѹU³ÉÕý±È£¬ÓëabÎÞ¹Ø |
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