(a) A well-insulated electric water heater warms 127 kg of water from 20.0°C to 45.0°C in 23.0 min. Find the resistance (in n) of its heating element, which is connected across a 240 V potential difference. (b) What If? How much aditional time (in min) would it take the heater to raise the temperature of the water from 45.0°C to 100°C? min (c) What would be the total amount of time (in min) required to evaporate all of the water in the heater starting from 20.0°C? min
(a) A well-insulated electric water heater warms 127 kg of water from 20.0°C to 45.0°C in 23.0 min. Find the resistance (in n) of its heating element, which is connected across a 240 V potential difference. (b) What If? How much aditional time (in min) would it take the heater to raise the temperature of the water from 45.0°C to 100°C? min (c) What would be the total amount of time (in min) required to evaporate all of the water in the heater starting from 20.0°C? min
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Transcribed Image Text:(a) A well-insulated electric water heater warms 127 kg of water from 20.0°C to 45.0°C in 23.0 min. Find the resistance (in N) of its heating element, which is connected across a 240 V potential difference.
(b) What If? How much additional time (in min) would it take the heater to raise the temperature of the water from 45.0°C to 100°C?
min
(c) What would be the total amount of time (in min) required to evaporate all of the water in the heater starting from 20.0°C?
min
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