澶嶅埗鎴愬姛
  • 鍥炬鑳屾櫙
  • 绾壊鑳屾櫙

绗旇

  • 2019-11-16
    涓哄ぇ浜哄甫鏉ュ舰璞$殑缇婄敓鑲栨晠浜嬫潵鍘 涓哄瀛愬甫鍘诲揩涔愮殑鐢熻倴鍥剧敾鏁呬簨闃呰
    璋堣皥鎬庢牱瀛﹀ソ鏁板_鑻忔闈-涓鐢熸枃搴
浼氬憳娉ㄥ唽

涓婁紶浜庯細2015-06-07

绮変笣閲忥細13

璇ユ枃妗h础鐚呭緢蹇欙紝浠涔堜篃娌$暀涓嬨



自己做快三平台—官方网址22270.COM鈥斾粠璋冭妭鏂逛究瑙掑害鐪嬪垎鍘嬮檺娴佺數璺殑閫夋嫨

涓嬭浇绉垎锛1500

鍐呭鎻愮ず锛 V o1 锛 3 1 No 锛 5 (2010) 鐗╃悊鏁欏笀 P H Y S I C S T E A C H E R 绗 3l 鍗风 5 鏈 20 10 浼 浠庤皟鑺傛柟渚 瑙掑害鐪嬪垎鍘 闄愭祦 鐢佃矾 鐨勯夋嫨 缈熷瓭褰 (姹熻嫃鐪佸緪宸炲競渚泦楂樼骇涓 锛 姹熻嫃 寰愬窞鐢靛瀹為獙鐨勮皟鍘 鐢佃矾 鏈夊 鍥 1銆 鍥 2 鎵 绀虹殑涓 绉嶇數璺 缁撴瀯锛 鍒嗗埆鍙垎鍘嬬數璺拰闄愭祦鐢佃矾锛 涓ょ鐢佃矾缁撴瀯鍒嗗埆鍏锋湁 濡傝〃 i 鎵鍒椾妇 鐨勭壒鐐 锛 杩欎簺鐗圭偣涓哄鐢熺啛 鐭 锛 甯歌鐢ㄤ綔璋冨帇 鐢佃矾閫夋嫨 鐨勪緷鎹 锛 鍏 瀹 锛 闄ゆ涔 澶 锛 寰呮祴 鐢甸樆 灏猴紝鍜屾粦鍔 鍙 闃诲櫒 R 鐨勫ぇ灏忓叧 绯诲湪涓 鍚 鐨勭數璺 涓紝 浼氬奖 鍝 璋冨帇 鐨勬柟渚 锛 涔熸槸 瀹為獙鍣ㄦ潗閫夋嫨鍜岀數璺夋嫨 鐨勪竴涓繀瑕佷緷鎹 锛 221121) 鍥 1鍒嗗帇 鐢...

鏂囨。鏍煎紡锛歅DF| 娴忚娆℃暟锛17| 涓婁紶鏃ユ湡锛2015-06-07 09:52:33| 鏂囨。鏄熺骇锛
V o1 锛 3 1 No 锛 5 (2010) 鐗╃悊鏁欏笀 P H Y S I C S T E A C H E R 绗 3l 鍗风 5 鏈 20 10 浼 浠庤皟鑺傛柟渚 瑙掑害鐪嬪垎鍘 闄愭祦 鐢佃矾 鐨勯夋嫨 缈熷瓭褰 (姹熻嫃鐪佸緪宸炲競渚泦楂樼骇涓 锛 姹熻嫃 寰愬窞鐢靛瀹為獙鐨勮皟鍘 鐢佃矾 鏈夊 鍥 1銆 鍥 2 鎵 绀虹殑涓 绉嶇數璺 缁撴瀯锛 鍒嗗埆鍙垎鍘嬬數璺拰闄愭祦鐢佃矾锛 涓ょ鐢佃矾缁撴瀯鍒嗗埆鍏锋湁 濡傝〃 i 鎵鍒椾妇 鐨勭壒鐐 锛 杩欎簺鐗圭偣涓哄鐢熺啛 鐭 锛 甯歌鐢ㄤ綔璋冨帇 鐢佃矾閫夋嫨 鐨勪緷鎹 锛 鍏 瀹 锛 闄ゆ涔 澶 锛 寰呮祴 鐢甸樆 灏猴紝鍜屾粦鍔 鍙 闃诲櫒 R 鐨勫ぇ灏忓叧 绯诲湪涓 鍚 鐨勭數璺 涓紝 浼氬奖 鍝 璋冨帇 鐨勬柟渚 锛 涔熸槸 瀹為獙鍣ㄦ潗閫夋嫨鍜岀數璺夋嫨 鐨勪竴涓繀瑕佷緷鎹 锛 221121) 鍥 1鍒嗗帇 鐢佃矾 鍥 2闄愭祦鐢佃矾 琛 1 姣旇緝椤 缁撴瀯 鍔熻 鍒嗗帇鐢佃矾 澶嶆潅 杈冨ぇ 闄愭祦鐢佃矾 绠鍗 杈冨皬 璋冨帇 鑼冨洿 (O锝濫 ) t 1鍒嗗帇鐢佃矾 鐨 R 涓嶳 鍏崇郴瀵硅皟鍘 鐨勫奖鍝嶅垎鏋 鍒嗗帇鐢佃矾涓 R 鐨勭 鐢靛帇鍏 瀹炴槸 R 涓庢粦鍔 鍙橀樆 鍣 R 瑙﹀ご宸︿晶鐢甸樆骞惰仈鎴 鏁翠綋浠 鐢垫簮鍒嗗緱 鐨勭數鍘 锛 璁 婊戝姩鍙橀樆 鍣 R 瑙﹀ご宸︿晶鐢甸樆闃诲间负 锛 鏍规嵁 涓茶仈鍒嗗帇鐨勭壒鐐 锛 鏈 R a锛 7 5 R x + 3 2 = 锛 R + -z 1銆自己做快三平台—官方网址22270.COM 涓 z 鍙 E = 5 V 锛 婊戝姩鍙橀樆鍣ㄩ樆鍊 R = 20 n 锛 R4 n 銆 20 Q 銆 100 n 鐨勫嚱鏁 鍥惧儚濡傚浘 3 鎵绀猴紟 鍒嗗埆涓 5 杩 涓 鍥 鍍 涔 鍙 浠 閫氳繃瀹氭у垎鏋愯幏寰 锛 (1)鍦 鍥 l 鎵绀 鐨 鐢佃矾 涓紝 璁 R = o銆 (鍗 UI E 鏂矾) 锛 姝ゆ椂 R 鐨勭 鐢 鍘嬪氨 鏄 婊戝姩 鍙 闃诲櫒 瑙 澶村乏 渚 鐢 闃讳笂 鍒 寰 鐨 鐢靛帇 锛 鏄剧劧 杩欎釜 鐢靛帇涓 涓20涓 鍥 3 鍥 4 婊戝姩 鍙橀樆 鍣ㄨЕ澶村乏渚х數闃(z )鎴愭姣旓紝 鍗硊 = 瑭3 2 锛 鍥惧儚 濡傚浘4 瀹炵嚎鎵绀猴紝 褰 = R 鏃讹紝 浠 鎰忓 鏃 锛 鐢卞浘鍍忓彲寰 (2) 褰撳緟娴 鐢甸樆 R 闃诲 鍑忓皬鏃 锛 R 涓庢粦鍔ㄥ彉 闃诲櫒 R 瑙﹀ご宸︿晶 鐢甸樆骞惰仈鏁翠綋 鐨勯樆鍊间篃蹇 鐒跺噺灏 锛 鏍 鎹覆鑱斿垎鍘 鐨勭壒鐐 锛 瀵瑰簲 鐨 涔熷繀 鐒跺噺 灏 (濡傛粦鍔 鍙橀樆鍣 闃诲 鍙 鏃 锛 骞惰仈鏁翠綋鐨勫垎鍘 鐢 L锛 1鍑忓皬 锛 濡傚彇 U2) 锛 鑰屾粦鍔 鍙橀樆鍣 R 瑙﹀ご宸︿晶鐢甸樆鍙栭浂 鏃讹紝 U = 0锛 婊 鍔ㄥ彉闃诲櫒 R 瑙 澶村乏渚 鐢甸樆鍙栧叏鐢甸樆R 鏃 锛 = E 鍗撮兘淇濇寔涓嶅彉 锛 鏍规嵁杩 浜涚壒鐐 鍙緱 锛 褰 R 鍙栦竴 杈冨皬鏁板兼椂 锛 U_ R 涓R 鐨 鍥剧嚎濡傚浘 4 铏氱嚎 鎵绀 锛 涓 R 鍙栧艰秺灏 锛 鍥剧嚎瓒婂集 锛 浠庝笉 鍚 R R 瀵瑰簲 鐨刄 鐨勫浘鍍忓彲瑙侊紝 R 瓒婂ぇ锛 U 涓 婊戝姩鍙橀樆鍣ㄥ苟鑱旈樆鍊艰秺 鎺ヨ繎绾挎у叧 绯 锛 鍦ㄥ疄楠屾搷 浣 涓秺鎺 杩戝潎鍖鍙樺寲 锛 褰 R 鍊 姣旀粦鍔ㄥ彉 闃诲櫒 鍏ㄥ 灏忓緱澶氭椂 锛 鍦ㄦ粦鍔 鍙橀樆鍣ㄥ苟 鑱旈樆鍊艰緝灏 鏃 锛 鍑 涔庝笉 闅忔粦鍔ㄥ彉 闃诲櫒骞 鑱旈樆 鍊兼敼鍙 锛 鍦ㄦ粦鍔ㄥ彉闃诲櫒骞惰仈闃诲艰緝澶ф椂 锛 骞惰仈 闃诲 鏀瑰彉澶繃杩呴 锛 杩欐槸寰堜笉渚夸簬瀹為獙鎿嶄綔鐨勶紟 鍥犳浠 鍒嗗帇 鐢佃矾璋冨帇鏂逛究 鐨勮 搴﹁冭檻 锛 鍒嗗帇 鐢佃矾 涓緟娴 鐢甸樆 闃诲 R 搴 姣旀粦鍔 鍙橀樆鍣 闃诲煎ぇ 锛 褰撳緟娴嬬數闃婚樆鍊 R 灏忎簬 婊戝姩 鍙栧埌鏈澶у糆 锛 褰 X 鍙 = U1锛 l 闅忔粦 鍔ㄥ彉闃诲櫒 1 鍙橀樆鍣ㄥ叏鍊肩殑÷ 鏃讹紝 灏变笉瀹滄帴鎴愬垎鍘嬬數璺簡锛 J 2闄愭祦鐢佃矾鐨凴涓嶳 鍏崇郴瀵硅皟鍘嬬殑褰卞搷鍒嗘瀽 闄愭祦鐢佃矾 涓 R 涓庢粦鍔ㄥ彉闃诲櫒瑙﹀ご鍙充晶 鐢甸樆鎴愪覆鑱斿叧 绯 锛 璁炬粦鍔ㄥ彉闃诲櫒瑙﹀ご鍙充晶 鐢甸樆闃诲 涓 R 锛 鏍规嵁 涓茶仈 鍒嗗帇 p 鐨勭壒鐐 锛 R 鐨勭鐢靛帇 u = 锛 鍙 E = 5 V 锛 婊戝姩 鍙橀樆 鍣 闃诲 R = 20 Q锛 R 鍒嗗埆 涓 4 n 銆 20 Q銆 100 Q 鐨勫嚱鏁 鍥惧儚 濡傚浘 5 鎵绀 锛 5 鍥 5 鏄剧劧锛 褰揜 銆婻 (濡 R = 100 Q 鍥剧嚎) 鏃讹紝 寰呮祴鐢甸樆鐨 绔 鐢靛帇闅忔粦鍔ㄥ彉闃诲櫒绾挎у彉鍖 锛 浣 鏄數鍘嬪彉鍖栬寖 鍥村お灏忥紟 褰 R 銆婏紟 R (濡 R = 4 n 鍥剧嚎)鏃讹紝 鍦ㄦ粦鍔ㄥ彉闃诲櫒鎺ヤ汉闃 鍊艰緝灏 鏃 锛 寰呮祴鐢甸樆鐨勭 鐢靛帇 鐨勫澶ц岃繀閫熷噺灏 锛 閫犳垚璋冭妭 鍥伴毦 锛 鍦ㄦ粦鍔ㄥ彉闃诲櫒鎺ュ叆闃诲 杈冨ぇ鏃 锛 寰呮祴鐢甸樆鐨勭 鐢靛帇 鐢甸樆鐨勫澶ц岃繀閫熷噺灏 锛 鍚屾牱閫犳垚璋冭妭鍥伴毦锛 缁间笂鑰冭檻 锛 鍙湁 褰撴粦鍔 鍙橀樆鍣 鐨勭數闃诲拰寰呮祴 鐢甸樆 鐨勯樆 鍊肩浉褰撴椂鎵嶅疁閲囩敤闄愭祦鎺ユ硶 锛 闅忔粦鍔ㄥ彉 闃诲櫒鎺ュ叆 鐢甸樆 鍑 涔庝笉闅忔粦鍔 鍙橀樆鍣ㄦ帴 鍏 (鏀剁ǹ 鏃ユ湡 锛 2009涓l l 涓 20)

鍏虫敞鎴戜滑

鍏虫敞寰俊鍏紬鍙

鎮ㄩ夋嫨浜嗕互涓嬪唴瀹