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Describe a sound wave. Discuss what determines pitch and volume.
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What is the earliest point in the universe that we can observe? why can’t we see back further than this?
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The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water
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Describe a sound wave. Discuss what determines pitch and volume....
Mathematics, 16.04.2020 22:31
Mathematics, 16.04.2020 22:31
Mathematics, 16.04.2020 22:31
Mathematics, 16.04.2020 22:31