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Physics unit6-resume
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1.
--:22/03/2013:1 ––:، ،.: ********************************************************************************** ●ا ا
ا: -ا ا ث أو ي ا ى ا دة ا ا ا ث)، ر اﻥ ،( .......ث ﺡ أﻥ ل ﻥ ، ي ا ى ا ارة ا درﺝ ث أو ، ﻥ ا ى ا دة ا ا ا ا. -ﺏـ ا اEiل ا وﺡ و. -آ ا ا: ▪ﺏـ را ﺡ آEth. ▪ا ﺏ آ–ا. ●اري ا ا رةارة ا در ﺡ: -ار إذا)اﻥ أو(اآ ﺡ ا ن ، ﺝ ارة ﺡ درﺝ)ت أو(اري ﺡ ﺏQ، ﺏ ا ا ه ار: Q = mc (θf – θi ) = C (θf – θi) Q:ا ارراي ا)J. ( m:دة ا آ)kg( θi:ا ﺏ ا ارة ا درﺝ)0 C. ( θf:ا ارة ا درﺝ)0 C. ( c:دة ا ار ا ا)J/(kg .0 C)(أوJ/(kg .0 K). ( C = mc:ووﺡ دة ار ا اJ/(0 C)(أوJ/(kg .0 K). ( -ﻥ آ إذاا ﺏ ا ارة ا درﺝ أآ ا ارة ا درﺝ)θf > θi(نQ > 0أن ا ه و ار ﺡ درﺝ اري ﺡ ﺏ ا. -ا ﺏ ا ارة ا درﺝ أ ا ارة ا درﺝ ﻥ آ إذا)θf < θi(نQ < 0ا ه وأن ار ﺡ درﺝ اري ﺡ ﺏ م ا. -را ا ا فCآ اد ة نm1 , m2 , m3 , …… mnا ار ا ﺱ و c1 , c2 , c3 , …… , cnأي اد ا ه ار ا ت ا ع ﻥ ﺏ: - : 06 ﺍﻟﻄﺎﻗﺔ ﻭ ﺍﻟﻤﻴﻜﺎﻧﻴﻚﺍﻟﻄﺎﻗﺔ ﻭ ﺍﻟﻤﻴﻜﺎﻧﻴﻚﺍﻟﻄﺎﻗﺔ ﻭ ﺍﻟﻤﻴﻜﺎﻧﻴﻚﺍﻟﻄﺎﻗﺔ ﻭ ﺍﻟﻤﻴﻜﺎﻧﻴﻚ ا:م ر ، ت ر www.sites.google.com/site/faresfergani ر:22/03/2013
2.
--:22/03/2013:2 ––:، ،.: C =
C1 + C2 + C3 + ……… + Cn أن ﺡ وC = mcن: C = m1c1 + m2c2 + m3c3 + ....... + mncn ●ار ا اااد ا: ادة اC J/(kg.K) م ا)Al(890 س ا)Cu(380 ا2090 ا ا1700 اء ا4185 ز ااآ)O2(0.94 ﺡ ﻡ: -ت ﺡ إذاQ1،Q2،........ه ع ن ، ا ﻥ إ م ﺝ ا ﺏ ي ا ا ار وي ا ت اQرﺝ ا ﺱ ا و رة آ ا م ﺝ ا ﻥ ا ا ﺏ أي: Q1 + Q2 + ………………= Q ن و ا ه ﻥ آ إذا ﺹ آ وﻥ ا م ﺝ ا ﺏ د ا ا ت ا ع أي وم: Q1 + Q2 + …………………= 0 ●اري ا ازن ا: -ﺱ ﺝ ج ﻥ)ﺹ ﺝ ﺱ ﺝ أو(ا ن ، ارة ا درﺝدرﺝ ذو ول ا ا ارة ﺡ درﺝ ا ارة ا درﺝ ذو اري ﺡ ﺏ م آ ا ارة ا ث ﺡ أﻥ ل ﻥ ، و أن إ ﻥ ا ا ارة ﺡ درﺝ واري ﺡ ازنه و ا ﻥ ا ا ارة ا درﺝﺏ ر آ ا. -ارة ا درﺝ م أﺝ ة ج ل ا ﻥ. ●ل: -ﻥ ﺏ آ ر ور ي ا راي ا ا ه ل ﺝ. -ﺵ ﺏ آ ر زIو أو ﻥRز ة ل∆tا ه ا ا ه م ،ة اري ﺡ ﺏ اQر: Q = P . t = U I t = R I2 t
3.
--:22/03/2013:3 ––:، ،.: P:ارة ا
ا اﺱ)اط ا:W. ( t:اري ا ا ز)s. ( U:ا)ن ا ق(و ا ا ﺏ)ا:V. ( I:و ا ا ز ا ر ا ة ﺵ)أ:A. ( R:و ا ا و)أوم. ( ●ا اﺱ: ا اﺱPاط ﺏ ر اWي ا ا ار ﺹ ﺡ هQا ة∆tأي: t∆ Q =P ●اري ا ا رةQدة ا ا ﺡ: دة ا ا ث)، ، ، ر اﻥ(ب اآ ا ا ه ل ا ء أ ارة ا درﺝ أن ، دة ا ه ت ﺝ ﺏ د ا ات ا ﻥ ان أو ل ا ﺏ ا. ار ﻥ: ا ا إ ا ا دة ل)ر اﻥ(ر اري ﺡ ﺏ دة ا ه ،Q ﺡ: Q = m Lf Q:ل ﺏ ر اري ا ا)J. ( m:ام ﺏ ر ا آ)kg. ( Lf:وﺡ ر ﻥ ا ا)J/kg. ( ا: ا ا إ ا ا دة ل)(ﺏ دة ا ه م ، ﺏ ارة ﺡ درﺝ ر اري ﺡQﺡ: Q = - m Lf Lf:وﺡ ، دة ا ﻥ ر ﻥ ا و ه و ا ا)J/kg. ( ا: ز ا ا إ ا ا دة ل)(ﺏ دة ا ه ، ﺏ ارة ﺡ درﺝ ر اري ﺡQﺡ: Q = m Lv Lv:وﺡ ا ا)J/kg. (
4.
--:22/03/2013:4 ––:، ،.: ا: ا ا
إ ز ا ا دة ل)(ﺏ دة ا ه م ، ﺏ ارة ﺡ درﺝ ر اري ﺡQﺡ: Q = - m Lv Lv:وﺡ ، دة ا ﻥ ا و ه و ا ا)J/kg. ( ●ئ ا ا ﺱ ا: -ﺏـ ا و يء ا ا ﺱ اEcohل ا وﺡ وور ا ا ه1 mol إ ز ا ا يء ا ا هد ا آ ز ا ا ذرات: AxBy (g) → x A (g) + y B (g) -ﺏ يء ﺱ ا: Ecoh = Σ DA-B ﺡDA-Bيء ا اﺏ اا أو ا ف ﺏ و اﺏ ا ع ﻥ ف ﺏ ه و ا ا آ ، اﺏ ا ا أو ا ا: DC-H = 415 kJ/mol DC-C = 345 kJ/mol DC=C = 615 kJ/mol DC≡C = 812 kJ/mol DO-H = 463 kJ/mol DC-O = 356 kJ/mol ل ﻡ:)ئ ا ا ﺱ اO6H2C( ن ن ﺹ يء ا ا. و ا ا: H H ׀ ׀ H – C – C – O – H ׀ ׀ H H Ecoh1 = Σ DA-B = 5 DC-H + DC-C + DC-O + DH-O اﻥ ا: H H ׀ ׀ H – C – O – C –H ׀ ׀ H H
5.
--:22/03/2013:5 ––:، ،.: Ecoh2 =
Σ DA-B = 6 DC-H + 2 DC-O أن ﻥ دي ا ا ﺏ:Ecoh1 ≠ Ecoh2أﻥ ذ ﻥ ،ل ت آ ا ﺏ ا يء ا ا ﺱ ا. ●ا: -ﺝ آ ل ثآي ا ى ا و ذ ء أ و ، ة ا ه ى أ رواﺏ و رواﺏ. -ا اﺏـ ا ﺏ آ وث ﺡ ه أو اERéaو ﺏ: ERéa = Σ DA-B(ت ) - Σ DA-B ( ا )ﻥ -ن آ إذاERéa > 0اري ﺡ ﺏ اآ ا ن ا ه و ارة ص ا ن. -ن آ إذاERéa < 0اري ﺡ ﺏ ا ن ا ه و ارة ﺵ ﻥ ا ن. و ا ه ﻥ.ا ان ا ذو ذ ﺱ ا أد: www.sites.google.com/site/faresfergani **ذ ﺱ ا:رس ﻥ** ﺱ ﺏ ﻥ ﺱ د ﻥ وب ا- Fares_Fergani@yahoo.Fr Tel : 0771998109 ﺡ و ر ا أو روس ا ي ﺏ وﻥ ا ا إﺏ ﺝ ﻥ. ا وﺵ
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