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6 January, 12:52

Describe how the design of a vacuum flask keeps the liquid inside hot?

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  1. 6 January, 14:12
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    The gap between the two flasks is partially evacuated of air, creating a near - vacuum which significantly reduces heat transfer by conduction or convection. Vacuum flasks are used domestically to keep beverages hot or cold.
  2. 6 January, 14:55
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    The gap between the two flasks is partially evacuated of air creating a near vacuum which significantly reduces heat transfer by conduction or convection
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