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the air we blow is hot or cold
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Solution
Dear student.
The air that we blow can be both hot or cold. It depends on the diameter of the opening of our mouth. If the opening is wide, the air will be warm, if we contract our lips and try to blow the air, it will be cold air.
Regards.
The air that we blow can be both hot or cold. It depends on the diameter of the opening of our mouth. If the opening is wide, the air will be warm, if we contract our lips and try to blow the air, it will be cold air.
Regards.
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