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[๋Œ€ํ•™๋ฌผ๋ฆฌํ•™] ๋น„๋“ฑ์† ์›์šด๋™์—์„œ์˜ ์›์šด๋™, ์ง„์ž์šด๋™ ์กฐ๊ฑด

์›์šด๋™ ์กฐ๊ฑด $v_{bot}\geq\sqrt{5gR}$ ์ง„์ž์šด๋™ ์กฐ๊ฑด $v_{bot}\leq\sqrt{2gR}$ * $v_{bot}$: ๋ฐ”๋‹ฅ์—์„œ์˜ ์†๋ ฅ

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2023. 1. 11.
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[๋Œ€ํ•™๋ฌผ๋ฆฌํ•™] ํฌ๋ฌผ์ฒด ์šด๋™ ๊ณต์‹

ํฌ๋ฌผ์ฒด ์šด๋™ (Projectile Motion) INDEX ๋ฐœ์‚ฌํ•œ ๊ฐ๋„ (์ดˆ๊ธฐ ๋ฐœ์‚ฌ ๋ฐฉํ–ฅ): $\theta_i$ ์ˆ˜ํ‰ ๋„๋‹ฌ ๊ฑฐ๋ฆฌ: $R$ ์ตœ๋Œ€ ๋†’์ด: $h$ ์ดˆ๊ธฐ ์†๋„ ๋ฒกํ„ฐ: $v_i$ ์ค‘๋ ฅ ๊ฐ€์†๋„: $g$ ์ตœ๊ณ ์  ๋„๋‹ฌ ์‹œ๊ฐ„: $t_A$ ์ตœ๊ณ ์  ๋„๋‹ฌ ์‹œ๊ฐ„ ($t_A$) $t_A=\frac{v_isin\theta_i}{g}$ ์ตœ๋Œ€ ๋†’์ด ($h$) $h=\frac{v_i^2sin^2\theta_i}{2g}$ ์ˆ˜ํ‰ ๋„๋‹ฌ ๊ฑฐ๋ฆฌ ($R$) $R=\frac{v_i^2sin2\theta_i}{g}$

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2023. 1. 9.
  • textsms

[๋ฌผ๋ฆฌํ•™ I] pํ˜• ๋ฐ˜๋„์ฒด์™€ nํ˜• ๋ฐ˜๋„์ฒด

pํ˜• ๋ฐ˜๋„์ฒด: 14์กฑ ์›์†Œ์— 13์กฑ ์›์†Œ ๋„ํ•‘ (B, Al, Ga ๋“ฑ) nํ˜• ๋ฐ˜๋„์ฒด : 14์กฑ ์›์†Œ์— 15์กฑ ์›์†Œ ๋„ํ•‘ (P, As, Sb ๋“ฑ)

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2022. 10. 1.
  • textsms
[๋ฌผ๋ฆฌํ•™ II] ์ „์ž๊ธฐํŒŒ์˜ ๊ฐ„์„ญ

[๋ฌผ๋ฆฌํ•™ II] ์ „์ž๊ธฐํŒŒ์˜ ๊ฐ„์„ญ

I. ํŒŒ๋™ ํŒŒ๋™ ํ•จ์ˆ˜ $y=Asin(kx-\omega t)$ ($A$: ์ง„ํญ, $k$: ํŒŒ์ˆ˜, $\omega$: ๊ฐ์ง„๋™์ˆ˜) ํŒŒ์ˆ˜ $k=\frac{2\pi}{\lambda}$ ๊ฐ์ง„๋™์ˆ˜ $\omega$ (rad/s) $\omega=\frac{2\pi}{T}=2\pi f$ ($f$: ์ง„๋™์ˆ˜) $kv=\frac{2\pi}{\lambda}\cdot\frac{\lambda}{T}=\frac{2\pi}{T}=\omega$ ($\lambda$: ํŒŒ์žฅ) ์œ„์ƒ $(kx-\omega t)$: ์œ„์ƒ (์œ„์ƒ๊ฐ) ์œ„์ƒ์ฐจ๊ฐ€ $\pi$์˜ ์ง์ˆ˜ ๋ฐฐ: ๊ฐ™์€ ์œ„์ƒ / ํ™€์ˆ˜ ๋ฐฐ: ๋ฐ˜๋Œ€ ์œ„์ƒ II. ๊ฐ„์„ญ ์ด์ค‘ ์Šฌ๋ฆฟ ๊ฐ„์„ญ ์‹คํ—˜ (by Young) ๊ฒฝ๋กœ์ฐจ ($\Delta$) $\Delta=|\overline{S_1P}-\overline{S_2P..

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2022. 9. 18.
  • textsms

[๋ฌผ๋ฆฌํ•™ I X ๋ฌผ๋ฆฌํ•™ II] ๋ฌผ๋ฆฌํ•™ I ํŒŒ๋™ Review

ํŒŒ๋™์˜ ๋ถ„๋ฅ˜ ๋งค์งˆ์˜ ์œ ๋ฌด ํƒ„์„ฑํŒŒ(๋งค์งˆO) vs ์ „์ž๊ธฐํŒŒ(๋น› — ๋งค์งˆX) ๊ตฌ๋ฉดํŒŒ vs ํ‰๋ฉดํŒŒ ์ข…ํŒŒ vs ํšกํŒŒ ์ •์ƒํŒŒ ์ง„ํญ, ์†๋„, ํŒŒ์žฅ์ด ๊ฐ™์€ ๋‘ ํŒŒ๋™์ด ์„œ๋กœ ๋งˆ์ฃผ๋ณด๊ณ  ์ง„ํ–‰ํ•˜์—ฌ ์ถฉ๋Œ โ–ถ ํ•ญ์ƒ y๊ฐ€ 0์ธ ์ง€์ (๋งˆ๋””์  — ์ƒ์‡„๊ฐ„์„ญ) ์กด์žฌ!

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2022. 9. 7.
  • textsms
โญ๏ธ ํŒŒ๋™ ๊ด€๋ จ ๊ณต์‹ ์ •๋ฆฌ โญ๏ธ

โญ๏ธ ํŒŒ๋™ ๊ด€๋ จ ๊ณต์‹ ์ •๋ฆฌ โญ๏ธ

* ์‚ฌ์ง„์—์„œ์˜ $\theta _{1}$์„ i๋กœ, $\theta _{2}$๋ฅผ r๋กœ ํ‘œํ˜„ํ•จ. ๐Ÿ“š ๊ธฐํ˜ธ ์„ค๋ช… ์—ด๊ธฐ โ–ผ ๋”๋ณด๊ธฐ Essential v: ์†๋ ฅ i: ์ž…์‚ฌ๊ฐ r: ๋ฐ˜์‚ฌ๊ฐ n: ๊ตด์ ˆ๋ฅ  f: ์ง„๋™์ˆ˜ (์ฃผํŒŒ์ˆ˜) T: ์ฃผ๊ธฐ $\lambda$: ํŒŒ์žฅ Additional A: ์ง„ํญ $\dfrac{V_{1}}{V_{2}}=\dfrac{\sin i}{\sin r}=\dfrac{n_{2}}{n_{1}}$ (์Šค๋„ฌ ๋ฒ•์น™ / ๊ตด์ ˆ ๋ฒ•์น™) * ๊ตด์ ˆ๋ฅ ์ด ํฐ ๋งค์งˆ์—์„œ ์ž‘์€ ๋งค์งˆ๋กœ ์ง„ํ–‰ํ•  ๋•Œ: ๊ตด์ ˆ๊ฐ>์ž…์‚ฌ๊ฐ $f=\dfrac{1}{T}$ $v=\dfrac{\lambda }{T}=f\lambda$ $n_{1}\sin i=n_{2}\sin r$ $f\propto \dfrac{1}{\lambda }$ ์ผ๋ฐ˜์ ์œผ๋กœ, $\lambda$ ์ฆ..

  • format_list_bulleted ๐Ÿซ Study/Physics
  • · 2022. 2. 11.
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