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https://github.com/danbulant/notes
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vault backup: 2023-04-24 16:57:27
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3 changed files with 40 additions and 21 deletions
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@ -12,8 +12,8 @@
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@ -1187,6 +1187,18 @@
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26
notes/.obsidian/workspace.json
vendored
26
notes/.obsidian/workspace.json
vendored
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@ -13,7 +13,7 @@
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"state": {
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@ -25,7 +25,7 @@
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@ -56,7 +56,7 @@
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@ -114,7 +114,7 @@
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@ -131,7 +131,7 @@
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@ -178,7 +178,7 @@
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"file": "mat/Funkce/čtvrtletka tahák.md"
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@ -250,15 +250,18 @@
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"fyz/Změny skupenství.md",
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"fyz/Pevne blbosti/Vzorky.md",
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"fyz/fyz.md",
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"mat/Trigonometrie/Kosinová věta.md",
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"mat/Funkce/Sinus.md",
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"mat/Trigonometrie/Sinová věta.md",
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"data/Pasted image 20230419111526.png",
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@ -287,10 +290,7 @@
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"cjl/literatura/slohy/Romantismus/Romantismus.md",
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"cjl/cjl.md",
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"mat/mat.md",
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"fyz/fyz.md",
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"data/Změny skupenství 2023-04-11 11.58.21.excalidraw.md",
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"fyz/Jevy mezi pevnýma tělesama a kapalinama.md",
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"fyz/Změny skupenství.md",
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"fyz/Pevne blbosti/Povrchová síla.md",
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"cjl/literatura/slohy/Realismus",
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"cjl/literatura/slohy/Poetismus",
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@ -1,6 +1,6 @@
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# Vzorky
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## Normalove napeti
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- tlak v pevnych latkach
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## Normálové napětí
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- tlak v pevných látkách
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$\sigma_n=\frac{F_n}{S}$
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$[\sigma_n]=N*m^{-2}=Pa$
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@ -12,13 +12,13 @@ $\frac{\Delta l}{l_0}=E\frac{F}{S}$
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$\epsilon=\frac{\Delta l}{l_0}=E*\sigma_n$
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$\sigma_n=E*\epsilon$
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$E=$ modul pruznosti (jednotka $Pa$)
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$E=$ modul pružnosti (jednotka $Pa$)
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---
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Krychle $a_0$
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$V_0=a_0^3$
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Zahreje se…
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Zahřeje se…
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Krychle $a$
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$V=a^3=[a_0(1+\alpha\Delta T)]^3$
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$a=a_0^3(1+\alpha\Delta T)^3$
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@ -31,11 +31,18 @@ $a=V_0(1+3\alpha\Delta T)$
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---
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Zmena hustoty s teplotou?
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Změna hustoty s teplotou?
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$\uparrow t\downarrow\rho$ (tabulka - hustota pri $20\degree C$)
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$\uparrow t\downarrow\rho$ (tabulka - hustota při $20\degree C$)
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$\rho=\frac{m}V=\frac{m}{V_0(1+\beta\Delta T)}=\frac{\rho_0}{1+\beta\Delta T}$
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$\rho=\frac{\rho_0}{1\beta\Delta T}*\frac{1-\beta\Delta T}{1-\beta\Delta T}=\frac{\rho(1-\beta\Delta T)}{1-(\beta\Delta T)^2\rightarrow0}$
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$\rho\dot=\rho_0(1-\beta\Delta T)$
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---
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Změna skupenství
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$Q=Q_1+L_t+Q_2$
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$Q=mC_l(t_t-t_1)+ml_t+mC_v(t_2-t_t)$
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