鐗╃悊绔炶禌缁冧範
14
锛堟亽瀹氱數娴?/p>
1
锛?/p>
1
锛庣粡鍏哥悊璁轰腑锛屾阿鍘熷瓙涓殑鐢靛瓙锛堢數閲?/p>
1.6脳
10
-19
搴撲粦锛夊湪鍗婂緞涓?/p>
0.53脳
10
-10
绫崇殑鍦嗗舰杞ㄩ亾涓?/p>
浠?/p>
6.6脳
10
15
璧吂鐨勯鐜囪繍鍔紝鍒欒建閬撲腑鐨勭數娴?/p>
_______________
銆?/p>
A
锛?/p>
1.06脳
10
-4
B
锛?/p>
1.06脳
10
-3
C
锛?/p>
1.06脳
10
-5
D
锛?/p>
1.6脳
10
-6
2
锛?/p>
涓ゆ牴鐢ㄧ浉鍚屾潗鏂欏仛鎴愮殑淇濋櫓涓濓紝
鍏剁洿寰勫垎鍒负
0
锛?/p>
5mm
鍜?/p>
lmm
锛?/p>
鐔旀柇鐢垫祦鍒嗗埆涓?/p>
2A
鍜?/p>
6A
銆?/p>
鐜板皢鐩稿悓闀垮害锛屼笉鍚岀矖缁嗙殑涓ゆ牴骞惰仈鎺ュ叆淇濋櫓涓濈洅锛屽垯鐢佃矾涓厑璁哥殑鏈�澶х數娴佷负
A
锛?/p>
6A
B
锛?/p>
7.5A
C
锛?/p>
8A
D
锛?/p>
10A
3
锛庨浂鐢甸樆鏄秴瀵间綋鐨勪竴涓熀鏈壒寰侊紝浣嗗湪纭杩欎竴浜嬪疄鏃跺彈鍒板疄楠屾祴閲忕簿纭害鐨勯檺鍒躲�備负鍏?/p>
鏈嶈繖涓�鍥伴毦锛屾渶钁楀悕鐨勫疄楠屾槸闀挎椂闂寸洃娴嬫蹈娉″湪娑叉�佹唉锛堟俯搴?/p>
T=4.2K
锛変腑澶勪簬瓒呭鎬佺殑鐢ㄩ搮
涓濆仛鎴愮殑鍗曞対绾垮湀锛堣秴瀵艰浆鎹㈡俯搴?/p>
T
C
=7.19K
锛変腑鐢垫祦鐨勫彉鍖栥�傝閾呬笣绮楃粏鍧囧寑锛屽垵濮嬫椂閫氭湁
I=100A
鐨勭數娴侊紝
鐢垫祦妫�娴嬩华鍣ㄧ殑绮惧害涓?/p>
1.0
I
mA
飦?/p>
飥?/p>
锛?/p>
鍦ㄦ寔缁竴骞寸殑鏃堕棿鍐呯數娴佹娴嬩华鍣ㄦ病鏈?/p>
娴嬮噺鍒扮數娴佺殑鍙樺寲銆傛牴鎹繖涓疄楠岋紝璇曚及绠楀瓒呭鎬侀搮鐨勭數闃荤巼涓洪浂鐨勭粨璁鸿瀹氱殑涓婇檺涓哄
澶с�傝閾呬腑鍙備笌瀵肩數鐨勭數瀛愭暟瀵嗗害
20
3
8.00
10
n
m
飥?/p>
飩?/p>
锛屽凡鐭ョ數瀛愯川閲?/p>
31
9.11
10
m
kg
飥?/p>
飥?/p>
飩?/p>
锛屽熀
鏈數鑽?/p>
19
1.60
10
e
C
飥?/p>
飥?/p>
飩?/p>
銆?/p>
锛堥噰鐢ㄧ殑浼扮畻鏂规硶蹇呴』鍒╃敤鏈鎵�缁欏嚭鐨勬湁鍏虫暟鎹級
4
锛庡亣鎯虫湁涓�姘村钩鏂瑰悜鐨勫寑寮虹鍦猴紝纾佹劅寮哄害
寰堝ぇ锛?/p>
鏈変竴鍗婂緞涓?/p>
锛屽帤搴︿负
(
<<
)
鐨勯噾
灞炲渾鐩樺湪姝ょ鍦轰腑绔栫洿涓嬭惤锛岀洏闈㈠缁堜綅浜庣珫鐩村钩闈㈠唴骞朵笌纾佸満鏂瑰悜骞宠锛屽鍥?/p>
1
鎵�绀猴紝鑻?
瑕佷娇鍦嗙洏鍦ㄧ鍦轰腑涓嬭惤鐨勫姞閫熷害姣旀病鏈夌鍦烘椂鍑忓皬鍗冨垎杩欎竴锛堜笉璁＄┖姘旈樆鍔涳級璇曚及绠楁墍闇�纾?/p>
鎰熷己搴︾殑鏁板�硷紝鍋囧畾閲戝睘鐩樼殑鐢甸樆涓洪浂锛屽苟璁鹃噾灞炵殑瀵嗗害
=9脳
10
3
kg/m
3
锛屼粙鐢靛父鏁颁负
=9脳
10
锛?
12
C
2
/N路
m
2
銆?/p>
5.
涓冨彧闃诲�煎潎涓?/p>
R
鐨勭數闃伙紝杩炴帴濡傚浘锛岃瘯姹傚鐢佃矾鐨勬�荤數闃?/p>
6
锛庡鍥炬墍绀猴紝鏌愮數璺湁鍏釜鎺ョ偣锛屾瘡涓や釜鎺ョ偣涔嬮棿閮借繛鏈変竴涓樆鍊间负
2惟
鐢甸樆銆傚湪姝ょ數璺殑
浠绘剰涓ょ偣涔嬮棿鍔犱笂
10V
鐨勭數鍘嬶紝璇曟眰鐢佃矾鐨勬�荤數娴併�佸悇鏀矾鐢垫祦浠ュ強鐢甸樆涓婃秷鑰楃殑鎬诲姛鐜囥�?/p>
7.
鍥炬墍绀虹殑鏃犻檺鏃嬭浆鍐呮帴姝ｆ柟褰㈤噾灞炰笣缃戠粶鏄敱涓�绉嶇矖缁嗕竴鑷淬�?/p>
鏉愭枡鍧囧寑鐨勯噾灞炰笣鏋勬垚锛?/p>
鍏朵腑
姣忎竴涓唴鎺ユ鏂瑰舰鐨勯《鐐归兘鍦ㄥ渚ф鏂瑰舰鍥涜竟涓偣涓娿�?/p>
宸茬煡鏈�澶栦晶姝ｆ柟褰㈣竟闀夸负
l
锛屽崟浣嶉暱閲?
灞炰笣鐨勭數闃讳负
r
0
锛屾眰缃戠粶涓細
锛?/p>
1
锛?/p>
A
锛?/p>
C
涓ょ闂寸瓑鏁堢數闃?/p>
R
AC
銆?/p>
锛?/p>
2
锛?/p>
E
锛?/p>
G
涓ょ闂寸瓑鏁堢數闃?/p>
R
EC
.
8.
濡傚浘鎵�绀猴紝
12
鏍圭數闃诲潎涓?/p>
R
鐨勭數闃讳笣杩炴帴鎴愭鍏潰浣撴鏋讹紝鍦?/p>
2
鏍圭數闃讳笣涓繛鏈夌數鍔ㄥ娍鍒?/p>
鍒负
E
1
涓?/p>
E
2
鐨勭數婧愶紝鍙﹀
5
鏍圭數闃讳笣涓繛鏈?/p>
5
涓浉鍚岀殑鐢靛鍣?/p>
C
銆傝鐢垫簮姝ｃ�佽礋鏋佷箣闂寸殑璺?/p>
绂诲彲蹇界暐锛屽唴闃讳篃鍙拷鐣ワ紝涓?/p>
E
1
锛?/p>
2I
0
R
锛?/p>
E
2
锛?/p>
I
0
R
锛庤瘯姹傦細
锛?/p>
1
锛夊浘涓１
AB
涓殑鐢垫祦
I
AB
锛?/p>
锛?/p>
2
锛夊浘涓１
A'B'
涓數瀹瑰櫒鏋佹澘涓婄殑鐢甸噺
Q
A'B'
銆?/p>
9
锛庣敱
7
涓樆鍊煎潎涓?/p>
r
鐨勭數闃荤粍鎴愮殑缃戠粶鍏冨宸﹀浘鎵�绀猴紝鐢辫繖绉嶇綉缁滃厓褰兼杩炴帴褰㈡垚鐨勫崟鍚戞棤
闄愮綉缁滃鍙冲浘鎵�绀猴紝璇曟眰鍥惧彸鍥句腑
P
銆?/p>
Q
涓ょ偣涔嬮棿鐨勭瓑鏁堢數闃?/p>
R
PQ
銆?/p>
10
锛庢湁涓�鏃犻檺骞抽潰瀵间綋缃戠粶锛屽畠鐢卞ぇ灏忕浉鍚岀殑姝ｅ叚杈瑰舰缃戠溂缁勬垚锛屽鍥?/p>
10
涓�
23
鎵�绀猴紟鎵�鏈?/p>
鍏竟褰㈡瘡杈圭殑鐢甸樆鍧囦负
R
0
锛庢眰锛?/p>
1
2
3
4
5
6
7
8
鍥?nbsp;6