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Help with 11,13 Question 12 The sound wave of an approaching siren will appear to increase in wavelength. True False True False Question 13 The

Help with 11,13

Question 12 The sound wave of an approaching siren will appear to increase in wavelength. True False True False Question 13 The frequency of a wave decreases as it enters a more dense medium from a less dense medium. True LL False 14.PNG

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