Physics · Oct / Nov 2020 · Paper 41 · Question 5
0625
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The question as text
A metal container is used to cook food. The metal container has thick walls. Hot cooking oil at a temperature of 120 °C is poured into the container.
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5(a)[3]
electrons mentioned
electrons travel (a great distance) through the metal or (vibrating) atoms hit (free) electrons
electrons hit (distant) particles or transfer energy (to distant atoms)
5(b)[3]
shiny surfaces are poor emitters (of radiation)
infrared / radiation / mentioned
less energy lost or lost energy does not need to be supplied
5(c)[1]
less thermal energy emitted or less space for energy to be lost
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