Added 6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7 6.1.8 6.1.9 6.1.10 6.1.11 6.1.12 6.1.13 6.1.14 6.1.15 6.1.16 6.1.17 6.1.18 6.1.19 6.1.21 9.2.1 9.2.2

astrosander edited
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revision #235 parent #233 GitHub a134a01 ← older newer →
ru/6.1.9.md +3 −3
@@ -192,14 +192,14 @@
\right.$
<br><br>
$\frac{F_k}{mg}=\cot{45^{\circ}}=1$<br><br>
−$\frac{1}{4\pi\epsilon_0}\frac{q^2}{(\frac{l}{\cos{45^{\circ}}})^2}=mg$<br><br>
−$q=\sqrt{4\pi\epsilon_0mg(\sqrt{2}l)^2}=l\sqrt{8\pi\epsilon_0mg}$
+$\frac{1}{4\pi\varepsilon_0}\frac{q^2}{(\frac{l}{\cos{45^{\circ}}})^2}=mg$<br><br>
+$q=\sqrt{4\pi\varepsilon_0mg(\sqrt{2}l)^2}=l\sqrt{8\pi\varepsilon_0mg}$
<br> <br>
</p>
</div>
<h3>
− Ответ: $l\sqrt{8\pi\epsilon_0mg}$
+ Ответ: $l\sqrt{8\pi\varepsilon_0mg}$
</h3>
</div>
unchanged lines 54