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(a)Explain

(i)why the rate of loss of thermal the walls of the flask by conduction is very low.
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(ii)why the rate of loss of thermal energy through the walls of the flask by radiation is very low.
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(b)Suggest with reasons,what must be added to the flask shown in the pic in order to keep the liquid hot.
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aExplainiwhy the rate of loss of thermal the walls of the flask by conduction is very lowiiwhy the rate of loss of thermal energy through the walls of the flask class=

Respuesta :

habib93

Answer:

the vacuum between the glass walls. ... Since air is a poor conductor of heat, having trapped air in the sponge and hollow plastic stopper help to prevent heat loss by conduction

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