Answered: A long rod, insulated to prevent heat…

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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Question

A long rod, insulated to prevent heat loss along its sides, is in perfect thermal contact with boiling water (at atmospheric pressure) at one end and with an ice-water mixture at the other (Figure 1). The rod consists of a 1.00m section of copper (with one end in the boiling water) joined end-to-end to a length L2 of steel (with one end in the ice water). Both sections of the rod have cross-sectional areas of 4.00 cm^2. The temperature of the copper-steel junction is 65.0 C after a steady state has been reached. Assume that the thermal conductivities of copper and steel are given by kcopper=385 W/m⋅K and ksteel=50.2 W/m⋅K.

How much heat per second H (=Q/Δt) flows from the boiling water to the ice-water mixture?

OBoiling
water
COPPER
-1.00 m-
65.0°C
STEEL
-42-→
0800
Ice and
water
17

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