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A stainless-steel-bottomed kettle, its bottom 28 cm in diameter and 1.6 mm thick, sits on a...

A stainless-steel-bottomed kettle, its bottom 28 cm in diameter and 1.6 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W .

What is the temperature of the bottom surface of the kettle? Thermal conductivity of stainless steel is 14 W/(m⋅K).

Express your answer in degrees Celsius to four significant figures.

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Answer #1


Here m

let the temperature of the bottom is T

temperature of the top , Ti = 100 degree C

heat Power = k *Area * delta T/thickness

800 = pi * 0.14^2 * (T - 100)/0.0016

solving for T

T = 120.8 degree C

the temperature of the bottom is 120.8 degree C

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