IB Physics SL revision - Waves 3 - reflection and refraction of waves

[@anarkazimov4206]

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[@naginamushtaq8127]

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[@katietrinidad9070]

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[@rachelmiller3674]

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[@mominmustafa8164]

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[@MrLiniboy]

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[@quirkyquester]

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[@monajama2856]

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[@javierlopez-ys4gs]

good luck tomorrow

[@zainabalfarsi7904]

Thank you so much, I have final physics exam and I was stuck in this coz I was ubsent , sorry for my English coz it's not my mother language 😊😊❤