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A small electric immersion heater is used to heat 50 g of water for a cup of instant coffee. The heater is labeled 180 watts

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A small electric immersion heater is used to heat 50 g of water for a cup of instant coffee. The heater is labeled "180 watts" (it converts electrical energy to thermal energy at this rate). Calculate the time required to bring all this water from 21C to 100 C, ignoring any heat losses. (The specific heat of water is 4186 J/kg.K.) Number i Units

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