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Edexcel P1 topic 4 UltraSounds Infrasounds Earthquakes Questions with 100% Correct Answers | Latest Update 2024
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Edexcel P1 topic 4 UltraSounds Infrasounds Earthquakes Questions with 100% Correct Answers | Latest Update 2024 What is the frequency range of normal human hearing? 20 to 20 000Hz What are frequencies below 20Hz called? infrasounds What are frequencies above 20 000Hz called? ultrasounds What...
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