初中物理的所有公式是？（按顺序八年级上册到九年级） 初中物理公式（按年级分的）
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\u94fe\u63a5: https://pan.baidu.com/s/1r9AgjTYtELkfzL4jxwzoLg
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\u2234I2\uff1dI-I1=1.2\u5b89-0.4\u5b89=0.8\u5b89
\u6839\u636e\u6b27\u59c6\u5b9a\u5f8bU2=I2R2=0.8\u5b89\u00d76\u6b27=4.8\u4f0f
\u53c8\u2235R1\u3001R2\u5e76\u8054 \u2234U=U1=U2=4.8\u4f0f
\u2234R1\uff1dU1\uff0fI1\uff1d4.8\u4f0f\uff0f0.4\u5b89\uff1d12\u6b27
\u2234R\uff1dU\uff0fI\uff1d4.8\u4f0f\uff0f1.2\u5b89\uff1d4\u6b27 (\u6216\u5229\u7528\u516c\u5f0f \u8ba1\u7b97\u603b\u7535\u963b) \u7b54\uff1a\uff08\u7565\uff09
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\u516c\u5f0f\uff1aW\uff1dUQ W\uff1dUIt=U2t/R=I2RtW\uff1dPt \u5355\u4f4d\uff1aW\u7126 U\u4f0f\u7279 I\u5b89\u57f9 t\u79d2 Q\u5e93 P\u74e6\u7279
\u2489\u7535\u529f\u7387P\uff1a\u7535\u6d41\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u6240\u4f5c\u7684\u7535\u529f\uff0c\u8868\u793a\u7535\u6d41\u4f5c\u529f\u7684\u5feb\u6162\u3002\u3010\u7535\u529f\u7387\u5927\u7684\u7528\u7535\u5668\u7535\u6d41\u4f5c\u529f\u5feb\u3002\u3011
\u516c\u5f0f\uff1aP\uff1dW/tP\uff1dUI (P\uff1dU²/R P\uff1dI²R) \u5355\u4f4d\uff1aW\u7126 U\u4f0f\u7279 I\u5b89\u57f9 t\u79d2 Q\u5e93 P\u74e6\u7279
\u248a\u7535\u80fd\u8868\uff08\u74e6\u65f6\u8ba1\uff09\uff1a\u6d4b\u91cf\u7528\u7535\u5668\u6d88\u8017\u7535\u80fd\u7684\u4eea\u8868\u30021\u5ea6\u7535\uff1d1\u5343\u74e6\u65f6\uff1d1000\u74e6\u00d73600\u79d2=3.6\u00d710^6\u7126\u8033
\u4f8b\uff1a1\u5ea6\u7535\u53ef\u4f7f\u4e8c\u53ea\u201c220V\u300140W\u201d\u7535\u706f\u5de5\u4f5c\u51e0\u5c0f\u65f6\uff1f
\u89e3 t\uff1dW/P\uff1d1\u5343\u74e6\u65f6/\uff082\u00d740\u74e6\uff09\uff1d1000\u74e6\u65f6/80\u74e6=12.5\u5c0f\u65f6
\u5341\u4e09\u3001\u78c1
1\uff0e\u78c1\u4f53\u3001\u78c1\u6781\u3010\u540c\u540d\u78c1\u6781\u4e92\u76f8\u6392\u65a5\uff0c\u5f02\u540d\u78c1\u6781\u4e92\u76f8\u5438\u5f15\u3011
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2\uff0e\u78c1\u573a\uff1a\u78c1\u4f53\u5468\u56f4\u7a7a\u95f4\u5b58\u5728\u7740\u4e00\u4e2a\u5bf9\u5176\u5b83\u78c1\u4f53\u53d1\u751f\u4f5c\u7528\u7684\u533a\u57df\u3002
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\u78c1\u573a\u65b9\u5411\uff1a\u5c0f\u78c1\u9488\u9759\u6b62\u65f6N\u6781\u6240\u6307\u7684\u65b9\u5411\u5c31\u662f\u8be5\u70b9\u7684\u78c1\u573a\u65b9\u5411\u3002\u78c1\u4f53\u5468\u56f4\u78c1\u573a\u7528\u78c1\u611f\u7ebf\u6765\u8868\u793a\u3002
\u5730\u78c1\u5317\u6781\u5728\u5730\u7406\u5357\u6781\u9644\u8fd1\uff0c\u5730\u78c1\u5357\u6781\u5728\u5730\u7406\u5317\u6781\u9644\u8fd1\u3002
3\uff0e\u7535\u6d41\u7684\u78c1\u573a\uff1a\u5965\u65af\u7279\u5b9e\u9a8c\u8868\u660e\u7535\u6d41\u5468\u56f4\u5b58\u5728\u78c1\u573a\u3002
\u901a\u7535\u87ba\u7ebf\u7ba1\u5bf9\u5916\u76f8\u5f53\u4e8e\u4e00\u4e2a\u6761\u5f62\u78c1\u94c1\u3002
\u901a\u7535\u87ba\u7ebf\u7ba1\u4e2d\u7535\u6d41\u7684\u65b9\u5411\u4e0e\u87ba\u7ebf\u7ba1\u4e24\u7aef\u6781\u6027\u7684\u5173\u7cfb\u53ef\u4ee5\u7528\u53f3\u624b\u87ba\u65cb\u5b9a\u5219\u6765\u5224\u5b9a\u3002
----------------------------------------------------
\u8865\u5145\u516c\u5f0f
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\u529f\uff1aW=FS
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\u673a\u68b0\u6548\u7387\uff1a\u03b7\uff1dW\u6709\u7528/W\u603b\uff1dGh/Fs=G/Fn(n\u4e3a\u6ed1\u8f6e\u7ec4\u7684\u80a1\u6570)
\u70ed\u91cf\uff1aQ\uff1dcm\u25b3t
\u70ed\u503c\uff1aQ=mq
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\u7126\u8033\u5b9a\u5f8b\uff1aQ\uff1dI²Rt\uff1dU²/Rt=UIt=Pt(\u540e\u4e09\u4e2a\u516c\u5f0f\u9002\u7528\u4e8e\u7eaf\u7535\u963b\u7535\u8def)
\u7535\u529f\uff1aW\uff1dUIt\uff1dPt\uff1dI²Rt\uff1dU²/Rt\uff08\u540e2\u4e2a\u516c\u5f0f\u9002\u7528\u4e8e\u7eaf\u7535\u963b\u7535\u8def\uff09
\u7535\u529f\u7387\uff1aP=UI\uff1dW/t\uff1dI²R\uff1dU²/R
\u6469\u64e6\u529b\u6269\u5145\uff1a
\u6ed1\u52a8\u6469\u64e6\u529b
1. \u5b9a\u4e49\uff1a\u5f53\u7269\u7406\u5728\u53e6\u4e00\u7269\u4f53\u8868\u9762\u76f8\u5bf9\u6ed1\u52a8\u65f6\uff0c\u53d7\u5230\u7684\u963b\u788d\u76f8\u5bf9\u6ed1\u52a8\u7684\u529b\u662f\u6ed1\u52a8\u6469\u64e6\u529b\u3002
2. \u4ea7\u751f\u6761\u4ef6\uff1aa.\u7269\u4f53\u95f4\u6709\u5f39\u529b;
b.\u63a5\u89e6\u9762\u7c97\u7cd9;
c.\u7269\u4f53\u95f4\u6709\u76f8\u5bf9\u6ed1\u52a8\u3002
3. \u5927\u5c0f\uff1af=µN\uff08f\u4e3a\u6ed1\u52a8\u6469\u64e6\u529b N\u4e3a\u6b63\u538b\u529b µ\u4e3a\u6469\u64e6\u56e0\u6570\u4e14\u65e0\u5355\u4f4d\uff09
4. \u65b9\u5411\uff1a\u4e0e\u63a5\u89e6\u9762\u76f8\u5207\uff0c\u4e0e\u76f8\u5bf9\u6ed1\u52a8\u7684\u65b9\u5411\u76f8\u53cd\u3002 \u6ce8\uff1a\u6ed1\u52a8\u6469\u64e6\u529b\u7684\u65b9\u5411\u53ef\u80fd\u8ddf\u7269\u4f53\u7684\u8fd0\u52a8\u65b9\u5411\u76f8\u540c\uff0c\u4e5f\u53ef\u80fd\u8ddf\u7269\u4f53\u7684\u8fd0\u52a8\u65b9\u5411\u76f8\u53cd\u3002
\u9759\u6469\u64e6\u529b
1. \u5b9a\u4e49\uff1a\u5f53\u4e00\u4e2a\u7269\u4f53\u76f8\u5bf9\u53e6\u4e00\u4e2a\u7269\u4f53\u6709\u76f8\u5bf9\u6ed1\u52a8\u7684\u8d8b\u52bf\u65f6\uff0c\u53d7\u5230\u7684\u963b\u788d\u76f8\u5bf9\u6ed1\u52a8\u7684\u529b\u662f\u9759\u6469\u64e6\u529b
2. \u4ea7\u751f\u6761\u4ef6\uff1aa.\u7269\u4f53\u95f4\u6709\u5f39\u529b;
b.\u7269\u4f53\u63a5\u89e6\u9762\u7c97\u7cd9;
c.\u7269\u4f53\u95f4\u6709\u76f8\u5bf9\u6ed1\u52a8\u7684\u8d8b\u52bf\u3002
3. \u5927\u5c0f\uff1a0<f\u2264fmax
4. \u65b9\u5411\uff1a\u4e0e\u63a5\u89e6\u9762\u76f8\u5207\uff0c\u8ddf\u76f8\u5bf9\u6ed1\u52a8\u8d8b\u52bf\u7684\u65b9\u5411\u76f8\u53cd
\u4e2d\u8003\u7269\u7406\u6240\u6709\u7684\u516c\u5f0f
\u7279\u70b9\u6216\u539f\u7406 \u4e32\u8054\u7535\u8def \u5e76\u8054\u7535\u8def
\u65f6\u95f4\uff1at t=t1=t2
t=t1=t2
\u7535\u6d41\uff1aI I = I 1= I 2
I = I 1+ I 2
\u7535\u538b\uff1aU U = U 1+ U 2
U = U 1= U 2
\u7535\u8377\u91cf\uff1aQ\u7535 Q\u7535= Q\u75351= Q\u75352 Q\u7535= Q\u75351+ Q\u75352
\u7535\u963b\uff1aR R = R 1= R 2
1/R=1/R1+1/R2 [R=R1R2/(R1+R2)]
\u7535\u529f\uff1aW W = W 1+ W 2
W = W 1+ W 2
\u7535\u529f\u7387\uff1aP P = P 1+ P 2
P = P 1+ P 2
\u7535\u70ed\uff1aQ\u70ed Q\u70ed= Q\u70ed1+ Q\u70ed 2 Q\u70ed= Q\u70ed1+ Q\u70ed 2
\u7269\u7406\u91cf\uff08\u5355\u4f4d\uff09 \u516c\u5f0f \u5907\u6ce8 \u516c\u5f0f\u7684\u53d8\u5f62
\u901f\u5ea6V\uff08m/S\uff09 v= S\uff1a\u8def\u7a0b/t\uff1a\u65f6\u95f4
\u91cd\u529bG
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g\uff1a9.8N/kg\u6216\u800510N/kg
\u5bc6\u5ea6\u03c1
\uff08kg/m3\uff09 \u03c1=
m\uff1a\u8d28\u91cf
V\uff1a\u4f53\u79ef
\u5408\u529bF\u5408
\uff08N\uff09 \u65b9\u5411\u76f8\u540c\uff1aF\u5408=F1+F2
\u65b9\u5411\u76f8\u53cd\uff1aF\u5408=F1\u2014F2 \u65b9\u5411\u76f8\u53cd\u65f6\uff0cF1>F2
\u6d6e\u529bF\u6d6e
(N) F\u6d6e=G\u7269\u2014G\u89c6 G\u89c6\uff1a\u7269\u4f53\u5728\u6db2\u4f53\u7684\u91cd\u529b
\u6d6e\u529bF\u6d6e
(N) F\u6d6e=G\u7269 \u6b64\u516c\u5f0f\u53ea\u9002\u7528
\u7269\u4f53\u6f02\u6d6e\u6216\u60ac\u6d6e
\u6d6e\u529bF\u6d6e
(N) F\u6d6e=G\u6392=m\u6392g=\u03c1\u6db2gV\u6392 G\u6392\uff1a\u6392\u5f00\u6db2\u4f53\u7684\u91cd\u529b
m\u6392\uff1a\u6392\u5f00\u6db2\u4f53\u7684\u8d28\u91cf
\u03c1\u6db2\uff1a\u6db2\u4f53\u7684\u5bc6\u5ea6
V\u6392\uff1a\u6392\u5f00\u6db2\u4f53\u7684\u4f53\u79ef
(\u5373\u6d78\u5165\u6db2\u4f53\u4e2d\u7684\u4f53\u79ef)
\u6760\u6746\u7684\u5e73\u8861\u6761\u4ef6 F1L1= F2L2 F1\uff1a\u52a8\u529b L1\uff1a\u52a8\u529b\u81c2
F2\uff1a\u963b\u529b L2\uff1a\u963b\u529b\u81c2
\u5b9a\u6ed1\u8f6e F=G\u7269
S=h F\uff1a\u7ef3\u5b50\u81ea\u7531\u7aef\u53d7\u5230\u7684\u62c9\u529b
G\u7269\uff1a\u7269\u4f53\u7684\u91cd\u529b
S\uff1a\u7ef3\u5b50\u81ea\u7531\u7aef\u79fb\u52a8\u7684\u8ddd\u79bb
h\uff1a\u7269\u4f53\u5347\u9ad8\u7684\u8ddd\u79bb
\u52a8\u6ed1\u8f6e F= \uff08G\u7269+G\u8f6e\uff09
S=2 h G\u7269\uff1a\u7269\u4f53\u7684\u91cd\u529b
G\u8f6e\uff1a\u52a8\u6ed1\u8f6e\u7684\u91cd\u529b
\u6ed1\u8f6e\u7ec4 F= \uff08G\u7269+G\u8f6e\uff09
S=n h n\uff1a\u901a\u8fc7\u52a8\u6ed1\u8f6e\u7ef3\u5b50\u7684\u6bb5\u6570
\u673a\u68b0\u529fW
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s\uff1a\u5728\u529b\u7684\u65b9\u5411\u4e0a\u79fb\u52a8\u7684\u8ddd\u79bb
\u6709\u7528\u529fW\u6709
\u603b\u529fW\u603b W\u6709=G\u7269h
W\u603b=Fs \u9002\u7528\u6ed1\u8f6e\u7ec4\u7ad6\u76f4\u653e\u7f6e\u65f6
\u673a\u68b0\u6548\u7387 \u03b7= \u00d7100%
\u529f\u7387P
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W\uff1a\u529f
t\uff1a\u65f6\u95f4
\u538b\u5f3ap
\uff08Pa\uff09 P=
F\uff1a\u538b\u529b
S\uff1a\u53d7\u529b\u9762\u79ef
\u6db2\u4f53\u538b\u5f3ap
\uff08Pa\uff09 P=\u03c1gh \u03c1\uff1a\u6db2\u4f53\u7684\u5bc6\u5ea6
h\uff1a\u6df1\u5ea6\uff08\u4ece\u6db2\u9762\u5230\u6240\u6c42\u70b9
\u7684\u7ad6\u76f4\u8ddd\u79bb\uff09
\u70ed\u91cfQ
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\u25b3t\uff1a\u6e29\u5ea6\u7684\u53d8\u5316\u503c
\u71c3\u6599\u71c3\u70e7\u653e\u51fa
\u7684\u70ed\u91cfQ\uff08J\uff09 Q=mq m\uff1a\u8d28\u91cf
q\uff1a\u70ed\u503c
\u5e38\u7528\u7684\u7269\u7406\u516c\u5f0f\u4e0e\u91cd\u8981\u77e5\u8bc6\u70b9
\u4e00\uff0e\u7269\u7406\u516c\u5f0f
\u5355\u4f4d\uff09 \u516c\u5f0f \u5907\u6ce8 \u516c\u5f0f\u7684\u53d8\u5f62
\u4e32\u8054\u7535\u8def
\u7535\u6d41I\uff08A\uff09 I=I1=I2=\u2026\u2026 \u7535\u6d41\u5904\u5904\u76f8\u7b49
\u4e32\u8054\u7535\u8def
\u7535\u538bU\uff08V\uff09 U=U1+U2+\u2026\u2026 \u4e32\u8054\u7535\u8def\u8d77
\u5206\u538b\u4f5c\u7528
\u4e32\u8054\u7535\u8def
\u7535\u963bR\uff08\u03a9\uff09 R=R1+R2+\u2026\u2026
\u5e76\u8054\u7535\u8def
\u7535\u6d41I\uff08A\uff09 I=I1+I2+\u2026\u2026 \u5e72\u8def\u7535\u6d41\u7b49\u4e8e\u5404
\u652f\u8def\u7535\u6d41\u4e4b\u548c\uff08\u5206\u6d41\uff09
\u5e76\u8054\u7535\u8def
\u7535\u538bU\uff08V\uff09 U=U1=U2=\u2026\u2026
\u5e76\u8054\u7535\u8def
\u7535\u963bR\uff08\u03a9\uff09 = + +\u2026\u2026
\u6b27\u59c6\u5b9a\u5f8b I=
\u7535\u8def\u4e2d\u7684\u7535\u6d41\u4e0e\u7535\u538b
\u6210\u6b63\u6bd4\uff0c\u4e0e\u7535\u963b\u6210\u53cd\u6bd4
\u7535\u6d41\u5b9a\u4e49\u5f0f I=
Q\uff1a\u7535\u8377\u91cf\uff08\u5e93\u4ed1\uff09
t\uff1a\u65f6\u95f4\uff08S\uff09
\u7535\u529fW
\uff08J\uff09 W=UIt=Pt U\uff1a\u7535\u538b I\uff1a\u7535\u6d41
t\uff1a\u65f6\u95f4 P\uff1a\u7535\u529f\u7387
\u7535\u529f\u7387 P=UI=I2R=U2/R U:\u7535\u538b I\uff1a\u7535\u6d41
R\uff1a\u7535\u963b
\u7535\u78c1\u6ce2\u6ce2\u901f\u4e0e\u6ce2
\u957f\u3001\u9891\u7387\u7684\u5173\u7cfb C=\u03bb\u03bd C\uff1a\u6ce2\u901f\uff08\u7535\u78c1\u6ce2\u7684\u6ce2\u901f\u662f\u4e0d\u53d8\u7684\uff0c\u7b49\u4e8e3\u00d7108m/s\uff09
\u03bb\uff1a\u6ce2\u957f \u03bd\uff1a\u9891\u7387
\u4e8c\uff0e\u77e5\u8bc6\u70b9
1\uff0e \u9700\u8981\u8bb0\u4f4f\u7684\u51e0\u4e2a\u6570\u503c\uff1a
a\uff0e\u58f0\u97f3\u5728\u7a7a\u6c14\u4e2d\u7684\u4f20\u64ad\u901f\u5ea6\uff1a340m/s b\u5149\u5728\u771f\u7a7a\u6216\u7a7a\u6c14\u4e2d\u7684\u4f20\u64ad\u901f\u5ea6\uff1a3\u00d7108m/s
c\uff0e\u6c34\u7684\u5bc6\u5ea6\uff1a1.0\u00d7103kg/m3
d\uff0e\u6c34\u7684\u6bd4\u70ed\u5bb9\uff1a4.2\u00d7103J/\uff08kg•\u2103\uff09
e\uff0e\u4e00\u8282\u5e72\u7535\u6c60\u7684\u7535\u538b\uff1a1.5V
f\uff0e\u5bb6\u5ead\u7535\u8def\u7684\u7535\u538b\uff1a220V
g\uff0e\u5b89\u5168\u7535\u538b\uff1a\u4e0d\u9ad8\u4e8e36V
2\uff0e \u5bc6\u5ea6\u3001\u6bd4\u70ed\u5bb9\u3001\u70ed\u503c\u5b83\u4eec\u662f\u7269\u8d28\u7684\u7279\u6027\uff0c\u540c\u4e00\u79cd\u7269\u8d28\u8fd9\u4e09\u4e2a\u7269\u7406\u91cf\u7684\u503c\u4e00\u822c\u4e0d\u6539\u53d8\u3002\u4f8b\u5982\uff1a\u4e00\u676f\u6c34\u548c\u4e00\u6876\u6c34\uff0c\u5b83\u4eec\u7684\u7684\u5bc6\u5ea6\u76f8\u540c\uff0c\u6bd4\u70ed\u5bb9\u4e5f\u662f\u76f8\u540c\uff0c
3\uff0e\u5e73\u9762\u955c\u6210\u7684\u7b49\u5927\u7684\u865a\u50cf\uff0c\u50cf\u4e0e\u7269\u4f53 \u5173\u4e8e\u5e73\u9762\u955c\u5bf9\u79f0\u3002
3\uff0e \u58f0\u97f3\u4e0d\u80fd\u5728\u771f\u7a7a\u4e2d\u4f20\u64ad\uff0c\u800c\u5149\u53ef\u4ee5\u5728\u771f\u7a7a\u4e2d\u4f20\u64ad\u3002
4\uff0e \u8d85\u58f0\uff1a\u9891\u7387\u9ad8\u4e8e2000\u7684\u58f0\u97f3\uff0c\u4f8b\uff1a\u8759\u8760\uff0c\u8d85\u58f0\u96f7\u8fbe\uff1b
5\uff0e \u6b21\u58f0\uff1a\u706b\u5c71\u7206\u53d1\uff0c\u5730\u9707\uff0c\u98ce\u7206\uff0c\u6d77\u5578\u7b49\u80fd\u4ea7\u751f\u6b21\u58f0\uff0c\u6838\u7206\u70b8\uff0c\u5bfc\u5f39\u53d1\u5c04\u7b49\u4e5f\u80fd\u4ea7\u751f\u6b21\u58f0\u3002
6\uff0e \u5149\u5728\u540c\u4e00\u79cd\u5747\u5300\u4ecb\u8d28\u4e2d\u6cbf\u76f4\u7ebf\u4f20\u64ad\u3002\u5f71\u5b50\u3001\u5c0f\u5b54\u6210\u50cf\uff0c\u65e5\u98df\uff0c\u6708\u98df\u90fd\u662f\u5149\u6cbf\u76f4\u7ebf\u4f20\u64ad\u5f62\u6210\u7684\u3002
7\uff0e \u5149\u53d1\u751f\u6298\u5c04\u65f6\uff0c\u5728\u7a7a\u6c14\u4e2d\u7684\u89d2\u603b\u662f\u7a0d\u5927\u4e9b\u3002\u770b\u6c34\u4e2d\u7684\u7269\uff0c\u770b\u5230\u7684\u662f\u53d8\u6d45\u7684\u865a\u50cf\u3002
8\uff0e \u51f8\u900f\u955c\u5bf9\u5149\u8d77\u4f1a\u805a\u4f5c\u7528\uff0c\u51f9\u900f\u955c\u5bf9\u5149\u8d77\u53d1\u6563\u4f5c\u7528\u3002
9\uff0e \u51f8\u900f\u955c\u6210\u50cf\u7684\u89c4\u5f8b\uff1a\u7269\u4f53\u57282\u500d\u7126\u8ddd\u4e4b\u5916\u6210\u7f29\u5c0f\u3001\u5012\u7acb\u7684\u5b9e\u50cf\u3002\u57282\u500d\u7126\u8ddd\u4e0e1\u500d\u7126\u8ddd\u4e4b\u95f4\uff0c\u6210\u5012\u7acb\u3001\u653e\u5927\u7684\u5b9e\u50cf\u3002 \u57281\u500d \u7126\u8ddd\u4e4b\u5185 \uff0c\u6210\u6b63\u7acb\uff0c\u653e\u5927\u7684\u865a\u50cf\u3002
10\uff0e\u6ed1\u52a8\u6469\u64e6\u5927\u5c0f\u4e0e\u538b\u529b\u548c\u8868\u9762\u7684\u7c97\u7cd9\u7a0b\u5ea6\u6709\u5173\u3002\u6eda\u52a8\u6469\u64e6\u6bd4\u6ed1\u52a8\u6469\u64e6\u5c0f\u3002
11\uff0e\u538b\u5f3a\u662f\u6bd4\u8f83\u538b\u529b\u4f5c\u7528\u6548\u679c\u7684\u7269\u7406\u91cf\uff0c\u538b\u529b\u4f5c\u7528\u6548\u679c\u4e0e\u538b\u529b\u7684\u5927\u5c0f\u548c\u53d7\u529b\u9762\u79ef\u6709\u5173\u3002
12\uff0e\u8f93\u9001\u7535\u538b\u65f6\uff0c\u8981\u91c7\u7528\u9ad8\u538b\u8f93\u9001\u7535\u3002\u539f\u56e0\u662f\uff1a\u53ef\u4ee5\u51cf\u5c11\u7535\u80fd\u5728\u8f93\u9001\u7ebf\u8def\u4e0a\u7684\u635f\u5931\u3002
13\uff0e\u7535\u52a8\u673a\u7684\u539f\u7406\uff1a\u901a\u7535\u7ebf\u5708\u5728\u78c1\u573a\u4e2d\u53d7\u529b\u800c\u8f6c\u52a8\u3002\u662f\u7535\u80fd\u8f6c\u5316\u4e3a\u673a\u68b0\u80fd \u3002
14\uff0e\u53d1\u7535\u673a\u7684\u539f\u7406\uff1a\u7535\u78c1\u611f\u5e94\u73b0\u8c61\u3002\u673a\u68b0\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002\u8bdd\u7b52\uff0c\u53d8\u538b\u5668\u662f\u5229\u7528\u7535\u78c1\u611f\u5e94\u539f\u7406\u3002
15\uff0e\u5149\u7ea4\u662f\u4f20\u8f93\u5149\u7684\u4ecb\u8d28\u300216\uff0e\u78c1\u611f\u5e94\u7ebf\u662f\u4ece\u78c1\u4f53\u7684N\u6781\u53d1\u51fa\uff0c\u6700\u540e\u56de\u5230S\u6781
重力G （N） G=mg（ m：质量； g：9.8N/kg或者10N/kg ）
密度：ρ （kg/m3）ρ= m/v （m：质量； V：体积）
合力：F合 （N） 方向相同：F合=F1+F2 ； 方向相反：F合=F1—F2 方向相反时，F1>F2
浮力：F浮 (N) F浮=G物—G视 （G视：物体在液体的重力）
浮力：F浮 (N) F浮=G物 （此公式只适用 物体漂浮或悬浮）
浮力：F浮 (N) F浮=G排=m排g=ρ液gV排 （G排：排开液体的重力 ；m排：排开液体的质量 ；ρ液：液体的密度； V排：排开液体的体积 (即浸入液体中的体积)）
杠杆的平衡条件： F1L1=F2L2 （ F1：动力 ；L1：动力臂；F2：阻力； L2：阻力臂）
定滑轮： F=G物 S=h （F：绳子自由端受到的拉力； G物：物体的重力； S：绳子自由端移动的距离； h：物体升高的距离）并联电路 电阻R（Ω）1/R =1/R1 +1/R2 +……
欧姆定律： I= U/R
电路中的电流与电压成正比，与电阻成反比
电流定义式 I= Q/t （Q：电荷量（库仑）；t：时间（S））
电功：W （J） W=UIt=Pt （U：电压； I：电流； t：时间； P：电功率）
电功率： P=UI=I2R=U2/R （U:电压； I：电流； R：电阻）
电磁波波速与波 长、频率的关系： C=λν （C：波速（电磁波的波速是不变的，等于3×108m/s）； λ：波长； ν：频率）
需要记住的几个数值：
a．声音在空气中的传播速度：340m/s b光在真空或空气中的传播速度：3×108m/s
c．水的密度：1.0×103kg/m3 d．水的比热容：4.2×103J/（kg·℃）
e．一节干电池的电压：1.5V f．家庭电路的电压：220V
g．安全电压：不高于36V动滑轮： F= （G物+G轮)/2 S=2 h （G物：物体的重力； G轮：动滑轮的重力）
滑轮组： F= （G物+G轮） S=n h （n：通过动滑轮绳子的段数）
机械功：W （J） W=Fs （F：力； s：在力的方向上移动的距离）
有用功：W有 =G物h
总功：W总 ——答案源于百度.望对您有帮助,谢谢采纳。 快中考了吧 ,好好冲刺,祝你考个好成绩哦!
速度：v=s/t密度：p=s/v压强：P=F/S＝pgh浮力：F浮=G排，功：p=sF功率：W=p/t欧母定律：I=U/R得其中两个就可利用公式算出第三个，电功率：W=UIt，＝IIRT＝UU/Rt
不好打阿，有几十个象欧姆定理等
I=U:R
绛旓細娴姏锛欶娴 (N) F娴=G鐗┾擥瑙 锛圙瑙嗭細鐗╀綋鍦ㄦ恫浣撶殑閲嶅姏锛夋诞鍔涳細F娴 (N) F娴=G鐗 锛堟鍏紡鍙傜敤 鐗╀綋婕傛诞鎴栨偓娴級娴姏锛欶娴 (N) F娴=G鎺=m鎺抔=蟻娑瞘V鎺 锛圙鎺掞細鎺掑紑娑蹭綋鐨勯噸鍔 锛沵鎺掞細鎺掑紑娑蹭綋鐨勮川閲 锛浵佹恫锛氭恫浣撶殑瀵嗗害锛 V鎺掞細鎺掑紑娑蹭綋鐨勪綋绉 (鍗虫蹈鍏ユ恫浣撲腑鐨勪綋绉)锛夋潬鏉...
绛旓細1銆佸寑閫熺洿绾胯繍鍔ㄧ殑閫熷害鍏紡锛氭眰閫熷害锛歷=s/t 姹傝矾绋嬶細s=vt 姹傛椂闂达細t=s/v 2銆佸彉閫熺洿绾胯繍鍔ㄧ殑閫熷害鍏紡锛歷=s/t 3銆佺墿浣撶殑鐗╅噸涓庤川閲忕殑鍏崇郴锛欸=mg 锛坓=9.8N/kg锛4銆佸瘑搴︾殑瀹氫箟寮 姹傜墿璐ㄧ殑瀵嗗害锛毾=m/V 姹傜墿璐ㄧ殑璐ㄩ噺锛歮=蟻V 姹傜墿璐ㄧ殑浣撶Н锛歏=m/蟻 4銆佸帇寮虹殑璁＄畻銆傚畾涔夊紡锛歱=F/S锛...
绛旓細♥锛 鍚堝姏鍏紡锛 F = F1 + F2 (鍚屼竴鐩寸嚎鍚屾柟鍚戜簩鍔涚殑鍚堝姏璁＄畻)F =F1 - F2 (鍚屼竴鐩寸嚎鍙嶆柟鍚戜簩鍔涚殑鍚堝姏璁＄畻) 濡傛灉F1>F2鍒欏悎鍔汧鐨勬柟鍚戜笌F1鐨勬柟鍚戠浉鍚屻傜墿鐞嗛噺鍗曚綅 蟻鈥斺斿瘑搴 kg/m3 g/cm3 m鈥斺旇川閲 kg g V鈥斺斾綋绉 m3 cm3 ♥锛 瀵嗗害鍏紡锛毾=m/v 鍏紡鍙樺舰锛 m=蟻v ...
绛旓細鍒濅腑鐗╃悊鍏紡濡備笅锛1銆佸寑閫熺洿绾胯繍鍔ㄧ殑浣嶇Щ鍏紡锛歺=vt 2銆佸寑鍙橀熺洿绾胯繍鍔ㄧ殑閫熷害鍏紡锛歷=v0+at 3銆佸寑鍙橀熺洿绾胯繍鍔ㄧ殑浣嶇Щ鍏紡锛歺=v0t+at2/2 4銆佺墰椤跨浜屽畾寰嬶細F=ma 5銆佹洸绾胯繍鍔ㄧ殑绾块熷害锛歷=s/t 6銆佹洸绾胯繍鍔ㄧ殑瑙掗熷害锛毾=胃/t 7銆佺嚎閫熷害鍜岃閫熷害鐨勫叧绯伙細v=蠅r 8銆佸懆鏈熷拰棰戠巼鐨勫叧绯伙細Tf=...
绛旓細浜烘暀鐗鍒濅腑鐗╃悊鎵鏈鐨勫叕寮 銆愬姏 瀛 閮 鍒嗐1銆侀熷害锛氱鍙凤細v 鍗曚綅锛歮/s (绫虫瘡绉)鍏紡锛歷 = s/t 2銆侀噸鍔涳細绗﹀彿锛欸 鍗曚綅锛歂 鍏紡锛欸 = mg 3銆佸瘑搴︼細绗﹀彿锛毾 鍗曚綅锛欿g/m3 鍏紡锛毾= m/V 4銆佸帇寮猴細绗﹀彿锛歅 鍗曚綅锛歅a 鍏紡锛 P = F/S 5銆佹恫浣撳帇寮猴細绗﹀彿锛歅 鍗曚綅...
绛旓細瀵嗗害鍏紡锛氬瘑搴 锛 璐ㄩ噺/浣撶Н 蟻= m/V 鍘嬪己鍏紡锛氬帇寮 锛 鍘嬪姏/鍙楀帇闈㈢Н p = F/S 闃垮熀绫冲痉鍘熺悊锛氭蹈鍦ㄦ恫浣涓殑鐗╀綋浼氬彈鍒扮珫鐩村悜涓婄殑娴姏锛屾诞鍔涚殑澶у皬绛変簬鐗╀綋鎺掑紑娑蹭綋鐨勯噸閲忋傦紙闃垮熀绫冲痉鍘熺悊鍚屾牱涔熼傜敤鐢ㄤ簬姘斾綋銆傦級F娴 锛 G鎺 锛澫佹恫V鎺抔 鏉犳潌鍘熺悊锛堟潬鏉嗙殑骞宠 鏉′欢锛夛細褰撴潬鏉嗛潤姝㈡垨鍖閫...
绛旓細锛1锛夈丵锛滻2Rt鏅鍏紡)锛2锛夈丵锛漊It锛漃t锛漊Q鐢甸噺锛漊2t/R (绾數闃诲叕寮)5銆佷覆鑱旂數璺細锛1锛夈両锛滻1锛滻2 锛2锛夈乁锛漊1锛婾2 锛3锛夈丷锛漅1锛婻2 锛1锛夈乄锛漊It锛漃t锛漊Q (鏅傚叕寮)锛2锛夈乄锛滻2Rt锛漊2t/R (绾數闃诲叕寮)9鐢靛姛鐜囷細锛1锛夈丳锛漌/t锛漊I (鏅傚叕寮)锛2锛夈丳锛滻...
绛旓細鍒濅腑鐗╃悊涓涓庡姛鐜囩浉鍏崇殑涓浜涘父鐢鍏紡濡備笅锛1銆佸姛鐜囧叕寮忥細鍔熺巼锛圥锛夌瓑浜庡仛鍔燂紙W锛夐櫎浠ユ椂闂达紙t锛夛細P = W / t 2銆佸仛鍔熷叕寮忥細鍋氬姛锛圵锛夌瓑浜庡姏锛團锛変箻浠ヤ綅绉伙紙s锛夛細 W = F 脳 s 3銆佸姏鐨澶у皬鍏紡锛氬姏锛團锛夌瓑浜庤川閲忥紙m锛変箻浠ュ姞閫熷害锛坅锛夛細 F = m 脳 a 4銆佸姞閫熷害鐨勮绠楀叕寮忥細鍔犻熷害锛坅锛...
绛旓細鍒濅腑鐗╃悊鍏紡姹囩紪 銆愬姏 瀛 閮 鍒嗐1銆侀熷害锛歏=S/t 2銆侀噸鍔涳細G=mg 3銆佸瘑搴︼細蟻=m/V 4銆佸帇寮猴細p=F/S 5銆佹恫浣撳帇寮猴細p=蟻gh 6銆佹诞鍔涳細锛1锛夈丗娴紳F鈥欙紞F (鍘嬪姏宸)锛2锛夈丗娴紳G锛岶 (瑙嗛噸鍔)锛3锛夈丗娴紳G (婕傛诞銆佹偓娴)锛4锛夈侀樋鍩虹背寰峰師鐞嗭細F娴=G鎺掞紳蟻娑瞘V鎺 7銆佹潬鏉...
绛旓細鐢靛姛鐜囧叕寮忥細 P = W /t P = I U 琛ㄨ揪寮忥細I=I1=I2 銆傝〃杈惧紡锛歎=U1+U2 琛ㄨ揪寮忥細P = P1+ P2 琛ㄨ揪寮忥細P = P1+ P2 骞惰仈鐢佃矾涓紝鐢ㄧ數鍣ㄧ殑鐢靛姛鐜囦笌鐢甸樆鎴愬弽姣斻備簩銆佸绾數鐑厓浠讹紝鎵鏈夊叕寮閮借兘鐢 瀵归潪绾數鐑厓浠讹紝鍙兘鐢╬=UI鍜寃=UIt 鍘熷洜鏄潪绾數鐑厓浠朵腑锛岃緭鍏ョ殑鐢靛姛闄や簡鍙戠儹澶栵紝鏈変竴...
