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Figure below shows a cross-section of a vacuum flask (i) Name the parts labelled A and B on the diagram...

      

Figure below shows a cross-section of a vacuum flask
p2420191054.png
(i) Name the parts labelled A and B on the diagram
(ii) Explain how the heat losses are minimized when hot liquid is poured into the flask

  

Answers


sharon
A = Vacuum;
B = Silvered (shiny) surfaces/polished/smooth;
(ii) - Loss of heat by conduction is reduced by cork and vacuum;
- Loss of convection is reduced by vacuum;
- Loss by radiation is reduced by silvered wall;
sharon kalunda answered the question on April 2, 2019 at 07:56


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