A well-insulated electric water heater warms 113 kg of water from 20.0°C to 53.0°C in 21.0 min. Find the resistance (in 2) of its heating element, which is connected across a 240 V potential difference. 4.65 Ω What If? How much additional time (in min) would it take the heater to raise the temperature of the water from 53.0°C to 100°C? 28.26 X min 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 well-insulated electric water heater warms 113 kg of water from 20.0°C to 53.0°C in 21.0 min. Find the resistance (in 2) of its heating element, which is connected across a 240 V potential difference. 4.65 Ω What If? How much additional time (in min) would it take the heater to raise the temperature of the water from 53.0°C to 100°C? 28.26 X min 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

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 70PE: Unreasonable Results (a) What current is needed to transmit 1.00 102 MW of power at 10.0kV? (b)...

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