·ÖÎö £¨1£©ÖªµÀòÔÁúºÅÏÂDZµÄÉî¶È£¬¸ù¾Ýp=¦ÑghÇó³ö¿ÇÌåÊܵ½º£Ë®µÄѹǿ£»
£¨2£©ÖªµÀòÔÁúºÅÏÂDZµÄÉî¶ÈºÍº£Ë®ÖеÄÉùËÙ£¬¸ù¾Ýv=$\frac{s}{t}$Çó³ö¡°òÔÁúºÅ¡±ÊÕµ½ÕýÉÏ·½Ä¸´¬µÄÖ¸ÁîÐèÒªµÄʱ¼ä£»
£¨3£©¶ÔÓÚÒѾ×é×°ºÃµÄ»¬ÂÖ×飬¸ù¾Ý¦Ç=$\frac{{W}_{ÓÐ}}{{W}_{×Ü}}$=$\frac{Gh}{Fs}$=$\frac{G}{nF}$¼ÆË㻬ÂÖ×°ÖõĻúеЧÂÊ£»
£¨4£©Ëæ×ÅÏÂDZÉî¶ÈµÄÔö´ó£¬Ñ¹Ç¿»áÔ½À´Ô½´ó£¬Î¶ȻáÔ½À´Ô½µÍ£®
½â´ð ½â£º
£¨1£©òÔÁúºÅÊܵ½º£Ë®µÄѹǿ£º
p=¦Ñgh=1.03¡Á103kg/m3¡Á10N/kg¡Á2700m¡Ö2.78¡Á107Pa£»
£¨2£©ÓÉv=$\frac{s}{t}$¿ÉµÃ£¬¡°òÔÁúºÅ¡±ÊÕµ½ÕýÉÏ·½Ä¸´¬µÄÖ¸ÁîÐèÒªµÄʱ¼ä£º
t=$\frac{s}{v}$=$\frac{h}{v}$=$\frac{2700m}{1500m/s}$=1.8s£»
£¨3£©ÓÉͼÒÒÖª£¬»¬ÂÖ×é³Ðµ£ÎïÖصÄÉþ×Ó¹ÉÊý£ºn=4£¬
ËùÒÔ»¬ÂÖ×°ÖõĻúеЧÂÊ£º
¦Ç=$\frac{{W}_{ÓÐ}}{{W}_{×Ü}}$¡Á100%=$\frac{Gh}{Fs}$¡Á100%=$\frac{G}{nF}$¡Á100%=$\frac{2.2¡Á1{0}^{5}N}{4¡Á68750N}$¡Á100%=80%£»
£¨4£©Ëæ×ÅÏÂDZÉî¶ÈµÄÔö´ó£¬º£Ë®Ñ¹Ç¿»áÔ½À´Ô½´ó£¬Î¶ȻáÔ½À´Ô½µÍ£¬ËùÒÔÏÂDZÖÁÉÐèÒª¿Ë·þµÄ¼¼ÊõÄÑÌâÊÇ£ºµÍκ͸ßѹ£®
´ð£º£¨1£©Êܵ½µÄº£Ë®µÄѹǿÊÇ2.78¡Á107Pa£»
£¨2£©ÊÕµ½ÕýÉÏ·½Ä¸´¬µÄÖ¸ÁîÐèÒª1.8s£»
£¨3£©»¬ÂÖ×°ÖõĻúеЧÂÊÊÇ80%£»
£¨4£©¡°òÔÁúºÅ¡±ÃæÁÙµÄÖ÷Òª¼¼ÊõÄÑÌâÊǵÍκ͸ßѹ£®
µãÆÀ ±¾ÌâÒÔ¡°òÔÁúºÅ¡±ÎªÔØÌ忼²éÁËÒºÌåѹǿ¹«Ê½¡¢Ëٶȹ«Ê½¡¢»úеЧÂʹ«Ê½µÄÀí½âºÍÓ¦Óã¬ÖªÊ¶µã£¬×ÛºÏÐÔÇ¿£¬µ«ÄѶȲ»´ó£®ÓÐÀûÓÚѧÉú×ÛºÏÄÜÁ¦µÄÅàÑø£®
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | ÓοͶÔÀ³µµÄѹÁ¦ÓëÀ³µ¶ÔÓο͵ÄÖ§³ÖÁ¦ | |
B£® | Óο͵ÄÖØÁ¦ÓëÀ³µ¶ÔÓο͵ÄÖ§³ÖÁ¦ | |
C£® | Óο͵ÄÖØÁ¦ÓëÓοͶÔÀ³µµÄѹÁ¦ | |
D£® | Óο͵ÄÖØÁ¦ÓëÀ³µ¶ÔÓο͵ÄĦ²ÁÁ¦ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÌî¿ÕÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£º¼ÆËãÌâ
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | С»Û°ÑСÓîÀÆð | B£® | СÓî°ÑС»ÛÀÆð | C£® | Á½¸ö¶¼À²»Æð | D£® | Á½¸ö¶¼ÀÆð |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | Ôö´óÌáÉýÖØÎïµÄËٶȣ¬¿ÉÒÔÔö´óÓÐÓù¦ | |
B£® | ¼õС¶¯»¬ÂÖµÄÖØÁ¦£¬¿ÉÒÔÌá¸ß»úеЧÂÊ | |
C£® | ¼õС¶¨»¬ÂÖµÄÖØÁ¦£¬¿ÉÒÔ¼õС¶îÍ⹦ | |
D£® | Ôö´óÌáÉýÖØÎïµÄ¸ß¶È£¬¿ÉÒÔÌá¸ß»úеЧÂÊ |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | W2=W3 | B£® | W2£¾W3 | C£® | W1£¼W2 | D£® | W1£¾W3 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º³õÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | Ãé×¼ÓãÏ·½²æÓã | B£® | ·Å´ó¾µ | C£® | ºþÖеĵ¹Ó° | D£® | ±×ÓÖеÄǦ±Ê |
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - 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