热值 比热容 初中 相关公式大全（包括推导后的）
\u521d\u4e2d\u7269\u7406\u5185\u80fd\uff0c\u70ed\u503c\uff0c\u6bd4\u70ed\u5bb9\u90fd\u4e0e\u4ec0\u4e48\u6709\u5173\uff1f\u5185\u80fd\uff1a\u7269\u4f53\u5185\u6240\u6709\u5206\u5b50\u505a\u65e0\u89c4\u5219\u8fd0\u52a8\u7684\u52a8\u80fd\u548c\u5206\u5b50\u52bf\u80fd\u7684\u603b\u548c\u3002\u5728\u5b8f\u89c2\u4e0a\u53d6\u51b3\u4e8e\u7269\u4f53\u6e29\u5ea6\u7684\u9ad8\u4f4e\u548c\u7269\u4f53\u8d28\u91cf\u5927\u5c0f\u3002
\u70ed\u503c\uff1a1kg\u71c3\u6599\u5b8c\u5168\u71c3\u70e7\u6240\u91ca\u653e\u7684\u70ed\u91cf\u3002\u8fd9\u662f\u7531\u71c3\u6599\u7684\u79cd\u7c7b\u51b3\u5b9a\u7684\u3002
\u6bd4\u70ed\u5bb9\uff1a1kg\u67d0\u79cd\u7269\u8d28\uff0c\u6e29\u5ea6\u4e0a\u5347\u6216\u4e0b\u964d1\u2103\u6240\u5438\u6536\u6216\u91ca\u653e\u7684\u70ed\u91cf\u3002\u7269\u8d28\u7684\u79cd\u7c7b\u548c\u7269\u6001\uff08\u56fa\u6db2\u6c14\uff09\u6765\u51b3\u5b9a
\u70ed\u91cf\uff1a\u7269\u4f53\u95f4\u70ed\u4f20\u9012\u6240\u4f20\u9012\u7684\u5185\u80fd\u5f97\u591a\u5c11\u3002
\u521d\u4e2d\u7269\u7406\u6982\u5ff5\u6c47\u603b
\u7269\u7406\u91cf\u540d\u79f0 \u7269\u7406\u91cf\u7b26\u53f7 \u5355\u4f4d\u540d\u79f0 \u5355\u4f4d\u7b26\u53f7 \u516c\u5f0f
\u8d28\u91cf m \u5343\u514b kg m=\u03c1v
\u6e29\u5ea6 t \u6444\u6c0f\u5ea6 \u00b0C
\u901f\u5ea6 v \u7c73\uff0f\u79d2 m/s v=s/t
\u5bc6\u5ea6 p \u5343\u514b\uff0f\u7c73³ kg/m³ p=m/v
\u529b\uff08\u91cd\u529b\uff09 F \u725b\u987f\uff08\u725b\uff09 N G=mg
\u538b\u5f3a P \u5e15\u65af\u5361\uff08\u5e15\uff09 Pa P=F/S
\u529f W \u7126\u8033\uff08\u7126\uff09 J W=Fs
\u529f\u7387 P \u74e6\u7279\uff08\u74e6\uff09 w P=W/t
\u7535\u6d41 I \u5b89\u57f9\uff08\u5b89\uff09 A I=U/R
\u7535\u538b U \u4f0f\u7279\uff08\u4f0f\uff09 V U=IR
\u7535\u963b R \u6b27\u59c6\uff08\u6b27\uff09 \u03a9 R=U/I
\u7535\u529f W \u7126\u8033\uff08\u7126\uff09 J W=UI t
\u7535\u529f\u7387 P \u74e6\u7279\uff08\u74e6\uff09 w P=W/t=UI
\u70ed\u91cf Q \u7126\u8033\uff08\u7126\uff09 J Q=cm\u25b3t
\u6bd4\u70ed c \u7126\u6bcf\u5343\u514b\u6444\u6c0f\u5ea6 J/(kg•\u00b0C) c\uff1dQ/m\u25b3t
\u5e38\u7528\u6570\u636e\uff1a
\u771f\u7a7a\u4e2d\u5149\u901f 3\u00d710^8\u7c73\uff0f\u79d2
g 9.8\u725b\u987f\uff0f\u5343\u514b
15\u00b0C\u7a7a\u6c14\u4e2d\u58f0\u901f 340\u7c73\uff0f\u79d2
\u5b89\u5168\u7535\u538b \u4e0d\u9ad8\u4e8e36\u4f0f
-------------------------------------------
\u521d\u4e2d\u7269\u7406\u57fa\u672c\u6982\u5ff5
\u4e00\u3001\u6d4b\u91cf
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\u2489\u65f6\u95f4t\uff1a\u4e3b\u5355\u4f4d:\u79d2\uff1b\u6d4b\u91cf\u5de5\u5177:\u949f\u8868\uff1b\u5b9e\u9a8c\u5ba4\u4e2d\u7528\u505c\u8868\u30021\u65f6\uff1d3600\u79d2\uff0c1\u79d2\uff1d1000\u6beb\u79d2\u3002
\u248a\u8d28\u91cfm\uff1a\u7269\u4f53\u4e2d\u6240\u542b\u7269\u8d28\u7684\u591a\u5c11\u53eb\u8d28\u91cf\u3002\u4e3b\u5355\u4f4d\uff1a\u5343\u514b\uff1b \u6d4b\u91cf\u5de5\u5177\uff1a\u79e4\uff1b\u5b9e\u9a8c\u5ba4\u7528\u6258\u76d8\u5929\u5e73\u3002
\u4e8c\u3001\u673a\u68b0\u8fd0\u52a8
\u2488\u673a\u68b0\u8fd0\u52a8\uff1a\u7269\u4f53\u4f4d\u7f6e\u53d1\u751f\u53d8\u5316\u7684\u8fd0\u52a8\u3002
\u53c2\u7167\u7269\uff1a\u5224\u65ad\u4e00\u4e2a\u7269\u4f53\u8fd0\u52a8\u5fc5\u987b\u9009\u53d6\u53e6\u4e00\u4e2a\u7269\u4f53\u4f5c\u6807\u51c6\uff0c\u8fd9\u4e2a\u88ab\u9009\u4f5c\u6807\u51c6\u7684\u7269\u4f53\u53eb\u53c2\u7167\u7269\u3002
\u2489\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8\uff1a
\u2460\u6bd4\u8f83\u8fd0\u52a8\u5feb\u6162\u7684\u4e24\u79cd\u65b9\u6cd5\uff1aa \u6bd4\u8f83\u5728\u76f8\u7b49\u65f6\u95f4\u91cc\u901a\u8fc7\u7684\u8def\u7a0b\u3002
b \u6bd4\u8f83\u901a\u8fc7\u76f8\u7b49\u8def\u7a0b\u6240\u9700\u7684\u65f6\u95f4\u3002
\u2461\u516c\u5f0f\uff1a v=s/t
\u2462\u5355\u4f4d\u6362\u7b97\uff1a1\u7c73\uff0f\u79d2\uff1d3.6\u5343\u7c73\uff0f\u65f6\u3002
\u4e09\u3001\u529b
\u2488\u529bF\uff1a\u529b\u662f\u7269\u4f53\u5bf9\u7269\u4f53\u7684\u4f5c\u7528\u3002\u7269\u4f53\u95f4\u529b\u7684\u4f5c\u7528\u603b\u662f\u76f8\u4e92\u7684\u3002
\u529b\u7684\u5355\u4f4d\uff1a\u725b\u987f\uff08N\uff09\u3002\u6d4b\u91cf\u529b\u7684\u4eea\u5668\uff1a\u6d4b\u529b\u5668\uff1b\u5b9e\u9a8c\u5ba4\u4f7f\u7528\u5f39\u7c27\u79e4\u3002
\u529b\u7684\u4f5c\u7528\u6548\u679c\uff1a\u4f7f\u7269\u4f53\u53d1\u751f\u5f62\u53d8\u6216\u4f7f\u7269\u4f53\u7684\u8fd0\u52a8\u72b6\u6001\u53d1\u751f\u6539\u53d8\u3002
\u7269\u4f53\u8fd0\u52a8\u72b6\u6001\u6539\u53d8\u662f\u6307\u7269\u4f53\u7684\u901f\u5ea6\u5927\u5c0f\u6216\u8fd0\u52a8\u65b9\u5411\u6539\u53d8\u3002
\u2489\u529b\u7684\u4e09\u8981\u7d20\uff1a\u529b\u7684\u5927\u5c0f\u3001\u65b9\u5411\u3001\u4f5c\u7528\u70b9\u53eb\u505a\u529b\u7684\u4e09\u8981\u7d20\u3002
\u529b\u7684\u56fe\u793a\uff0c\u8981\u4f5c\u6807\u5ea6\uff1b\u529b\u7684\u793a\u610f\u56fe\uff0c\u4e0d\u4f5c\u6807\u5ea6\u3002
\u248a\u91cd\u529bG\uff1a\u7531\u4e8e\u5730\u7403\u5438\u5f15\u800c\u4f7f\u7269\u4f53\u53d7\u5230\u7684\u529b\u3002\u65b9\u5411\uff1a\u7ad6\u76f4\u5411\u4e0b\u3002
\u91cd\u529b\u548c\u8d28\u91cf\u5173\u7cfb\uff1aG=mg m=G/g
g=9.8N\uff0fkg\u3002\u8bfb\u6cd5\uff1a9.8\u725b\u6bcf\u5343\u514b\uff0c\u8868\u793a\u8d28\u91cf\u4e3a1\u5343\u514b\u7269\u4f53\u6240\u53d7\u91cd\u529b\u4e3a9.8\u725b\u3002
\u91cd\u5fc3\uff1a\u91cd\u529b\u7684\u4f5c\u7528\u70b9\u53eb\u505a\u7269\u4f53\u7684\u91cd\u5fc3\u3002\u89c4\u5219\u7269\u4f53\u7684\u91cd\u5fc3\u5728\u7269\u4f53\u7684\u51e0\u4f55\u4e2d\u5fc3\u3002
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\u248c\u540c\u4e00\u76f4\u7ebf\u4e8c\u529b\u5408\u6210\uff1a\u65b9\u5411\u76f8\u540c:\u5408\u529bF=F1+F2;\u5408\u529b\u65b9\u5411\u4e0eF1\u3001F2\u65b9\u5411\u76f8\u540c\uff1b
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\u248d\u76f8\u540c\u6761\u4ef6\u4e0b\uff0c\u6eda\u52a8\u6469\u64e6\u529b\u6bd4\u6ed1\u52a8\u6469\u64e6\u529b\u5c0f\u5f97\u591a\u3002
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7\uff0e\u725b\u987f\u7b2c\u4e00\u5b9a\u5f8b\u4e5f\u79f0\u4e3a\u60ef\u6027\u5b9a\u5f8b\u5176\u5185\u5bb9\u662f\uff1a\u4e00\u5207\u7269\u4f53\u5728\u4e0d\u53d7\u5916\u529b\u4f5c\u7528\u65f6\uff0c\u603b\u4fdd\u6301\u9759\u6b62\u6216\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8\u72b6\u6001\u3002
\u60ef\u6027\uff1a\u7269\u4f53\u5177\u6709\u4fdd\u6301\u539f\u6765\u7684\u9759\u6b62\u6216\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8\u72b6\u6001\u7684\u6027\u8d28\u53eb\u505a\u60ef\u6027\u3002
\u56db\u3001\u5bc6\u5ea6
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\u516c\u5f0f\uff1a m=\u03c1V \u56fd\u9645\u5355\u4f4d\uff1a\u5343\u514b\uff0f\u7c73³ \uff0c\u5e38\u7528\u5355\u4f4d\uff1a\u514b\uff0f\u5398\u7c73³\uff0c
\u5355\u4f4d\u6362\u7b97\uff1a1\u514b\uff0f\u5398\u7c73³\uff1d1\u00d710³\u5343\u514b\uff0f\u7c73³\uff1b\u03c1\u6c34\uff1d1\u00d710³\u5343\u514b\uff0f\u7c73³\uff1b
\u8bfb\u6cd5\uff1a10³\u5343\u514b\u6bcf\u7acb\u65b9\u7c73\uff0c\u8868\u793a1\u7acb\u65b9\u7c73\u6c34\u7684\u8d28\u91cf\u4e3a10³\u5343\u514b\u3002
\u2489\u5bc6\u5ea6\u6d4b\u5b9a\uff1a\u7528\u6258\u76d8\u5929\u5e73\u6d4b\u8d28\u91cf\uff0c\u91cf\u7b52\u6d4b\u56fa\u4f53\u6216\u6db2\u4f53\u7684\u4f53\u79ef\u3002
\u9762\u79ef\u5355\u4f4d\u6362\u7b97\uff1a
1\u5398\u7c73²=1\u00d710^-4\u7c73²\uff0c
1\u6beb\u7c73²=1\u00d710^-6\u7c73²\u3002
\u4e94\u3001\u538b\u5f3a
\u2488\u538b\u5f3aP\uff1a\u7269\u4f53\u5355\u4f4d\u9762\u79ef\u4e0a\u53d7\u5230\u7684\u538b\u529b\u53eb\u505a\u538b\u5f3a\u3002
\u538b\u529bF\uff1a\u5782\u76f4\u4f5c\u7528\u5728\u7269\u4f53\u8868\u9762\u4e0a\u7684\u529b\uff0c\u5355\u4f4d\uff1a\u725b\uff08N\uff09\u3002
\u538b\u529b\u4ea7\u751f\u7684\u6548\u679c\u7528\u538b\u5f3a\u5927\u5c0f\u8868\u793a\uff0c\u8ddf\u538b\u529b\u5927\u5c0f\u3001\u53d7\u529b\u9762\u79ef\u5927\u5c0f\u6709\u5173\u3002
\u538b\u5f3a\u5355\u4f4d\uff1a\u725b/\u7c73²\uff1b\u4e13\u95e8\u540d\u79f0\uff1a\u5e15\u65af\u5361\uff08Pa\uff09
\u516c\u5f0f\uff1a F=PS \u3010S\uff1a\u53d7\u529b\u9762\u79ef\uff0c\u4e24\u7269\u4f53\u63a5\u89e6\u7684\u516c\u5171\u90e8\u5206\uff1b\u5355\u4f4d\uff1a\u7c73²\u3002\u3011
\u6539\u53d8\u538b\u5f3a\u5927\u5c0f\u65b9\u6cd5\uff1a\u2460\u51cf\u5c0f\u538b\u529b\u6216\u589e\u5927\u53d7\u529b\u9762\u79ef\uff0c\u53ef\u4ee5\u51cf\u5c0f\u538b\u5f3a\uff1b\u2461\u589e\u5927\u538b\u529b\u6216\u51cf\u5c0f\u53d7 \u529b\u9762\u79ef\uff0c\u53ef\u4ee5\u589e\u5927\u538b\u5f3a\u3002
\u2489\u6db2\u4f53\u5185\u90e8\u538b\u5f3a\uff1a\u3010\u6d4b\u91cf\u6db2\u4f53\u5185\u90e8\u538b\u5f3a\uff1a\u4f7f\u7528\u6db2\u4f53\u538b\u5f3a\u8ba1\uff08U\u578b\u7ba1\u538b\u5f3a\u8ba1\uff09\u3002\u3011
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\u89c4\u5f8b\uff1a\u2460\u540c\u4e00\u6df1\u5ea6\u5904\uff0c\u5404\u4e2a\u65b9\u5411\u4e0a\u538b\u5f3a\u5927\u5c0f\u76f8\u7b49
\u2461\u6df1\u5ea6\u8d8a\u5927\uff0c\u538b\u5f3a\u4e5f\u8d8a\u5927
\u2462\u4e0d\u540c\u6db2\u4f53\u540c\u4e00\u6df1\u5ea6\u5904\uff0c\u6db2\u4f53\u5bc6\u5ea6\u5927\u7684\uff0c\u538b\u5f3a\u4e5f\u5927\u3002 [\u6df1\u5ea6h,\u6db2\u9762\u5230\u6db2\u4f53\u67d0\u70b9\u7684\u7ad6\u76f4\u9ad8\u5ea6\u3002]
\u516c\u5f0f\uff1aP=\u03c1g h\uff1a\u5355\u4f4d\uff1a\u7c73\uff1b \u03c1\uff1a\u5343\u514b\uff0f\u7c73³\uff1b g=9.8\u725b\uff0f\u5343\u514b\u3002
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Q为吸收的热量，；m是物体的质量，⊿T即t2-t1是吸热（放热）后温度所上升（下降）值
定压比热容Cp：是单位质量的物质在压力不变的条件下，温度升高或下降1℃或1K所吸收或放出的能量。
定容比热容Cv：是单位质量的物质在容积（体积）不变的条件下，温度升高或下降1℃或1K吸收或放出的内能。
饱和状态比热容：是单位质量的物质在某饱和状态时，温度升高或下降1℃或1K所吸收或放出的热量。
另外
⒈不同的物质有不同的比热容，比热容是物质的一种特性
⒉同一物质的比热一般不随质量、形状的变化而变化。
⒊对同一物质，比热值与物态有关
C=Q/m×（t2-t1) 单位J/(kg·℃）
Q=cm△t
Q=cm△t
P=W/t P=Fv
滑轮组：W有=G物h W额=G动滑轮h W总=Fs=Fnh=（1/n）G总nh
η=W有/W总=G物h/Fs=G物h/Fnh=G物/nF=G物/G总
斜面：η=Gh/Fl
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