Physics · Oct / Nov 2020 · Paper 22 · Question 3
5054
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The question as text
Fig. 3.1 shows a hot water tank that contains two electric heaters X and Y. X Y hot water out cold water in insulation Fig. 3.1 Heater X is used during the daytime but heater Y is only used at night when electricity is cheaper.
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3(a)(i)[3]
3(a)(ii)[2]
3(b)[2]
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