The silvered walls of a vacuum flask enable heat transfer by.
a) conduction and radiation
b) radiation only
c) convection only
d) conduction only
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2
Answer:
conduction and radiation
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2
★᭄ꦿ᭄Answer★᭄ꦿ᭄
Heat transfer by conduction and convection works by particles colliding and transferring energy, as there are no particles in a vacuum heat transfer can only occur by radiation. This is because radiation involves electromagnetic waves, not particles, and is therefore able to transmit heat across a vacuum.
Option A
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