Tutorial Exercise The heating element of a coffeemaker operates at 120 V and carries a current of 3.70 A. Assuming the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat 0.692 kg of water from room temperature (23.0°C) to the boiling point. Step 1 The energy required to raise the temperature of an amount of water of mass m, from T, = 23.0°C to the boiling point, T = 100°C, is Q = m„C„(AT), where the specific heat of water c, = 4186 J/kg · °C. We have Q = m„Cw(AT) = m„cw(T - T) ]kg)(4186 J/kg · °c)( ]x 105 J.

Tutorial Exercise The heating element of a coffeemaker operates at 120 V and carries a current of 3.70 A. Assuming the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat 0.692 kg of water from room temperature (23.0°C) to the boiling point. Step 1 The energy required to raise the temperature of an amount of water of mass m, from T, = 23.0°C to the boiling point, T = 100°C, is Q = m„C„(AT), where the specific heat of water c, = 4186 J/kg · °C. We have Q = m„Cw(AT) = m„cw(T - T) ]kg)(4186 J/kg · °c)( ]x 105 J.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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