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Tags

phys

cegep/3

Word count

109 words

Reading time

1 minute

2025-08-27

• $\cos \theta =\cos (-\theta )$
• $\sin \theta =\sin (\pi -\theta )$
• $\tan \theta =\tan (\theta +\pi )$

2025-09-02

wave

Propagation

Fixed string end

Inverted reflection

Free string end

Non inverted reflection

Heavier string

Partial transmission, partial inverted reflection

$$v_{\text{transmitted}}<v_{\text{reflected}}$$

Lighter string

Partial transmission, partial non inverted reflection

$$v_{\text{transmitted}}>v_{\text{reflected}}$$

wave front

Crest of wave

resonance

Amplification of an oscillating system when an outside force matches one of the natural frequencies

[!example] Pushing a child on a swing

[!example] Plucking a guitar string

Contributors

Ajitani Hifumi

Changelog

Last edited 8 minutes ago

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0e34367-feat: sync: 2025-09-25T09:52:12

4ff0b04-feat: sync: 2025-09-17T17:55:13

c605f4a-feat: sync: 2025-09-12T12:04:25

a76d622-feat: sync: 2025-09-04T18:16:12

5f47dce-feat: sync: 2025-09-03T17:57:31

958f4d1-feat: sync: 2025-09-01T16:56:58

28094e2-feat: sync: 2025-08-27T15:58:15