A square steel bar of side length w= 0.13 m has a thermal conductivity of k= 14 J/(s m. °C) and is L= 2.1 m long. One end is placed near a blowtorch so that the temperature is T= 78° C while the other end rests on a block of ice so that the temperature is a constant T2 (a) Input an expression for the heat transferred to the cold end of the bar as a function of time, using A= w as the cross-sectional area of the bar. (b) How much energy, in joules, was conducted in 1 hour, assuming T2 = 0° C? (c) Input an expression for the mass of the water melted in 1 hour using Q, from above and Lfthe latent heat of fusion.
A square steel bar of side length w= 0.13 m has a thermal conductivity of k= 14 J/(s m. °C) and is L= 2.1 m long. One end is placed near a blowtorch so that the temperature is T= 78° C while the other end rests on a block of ice so that the temperature is a constant T2 (a) Input an expression for the heat transferred to the cold end of the bar as a function of time, using A= w as the cross-sectional area of the bar. (b) How much energy, in joules, was conducted in 1 hour, assuming T2 = 0° C? (c) Input an expression for the mass of the water melted in 1 hour using Q, from above and Lfthe latent heat of fusion.
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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Transcribed Image Text:A square steel bar of side length w= 0.13 m has a thermal conductivity of k= 14 J/(s •m. °C)
and is L= 2.1 m long. One end is placed near a blowtorch so that the temperature is T1= 78° C
while the other end rests on a block of ice so that the temperature is a constant T2
(a) Input an expression for the heat transferred to the cold end of the bar as a function of time,
using A= w as the cross-sectional area of the bar.
(b) How much energy, in joules, was conducted in 1 hour, assuming T2 = 0° C?
(c) Input an expression for the mass of the water melted in 1 hour using Q, from above
and Lfthe latent heat of fusion.
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