2. The coefficient of linear expansion of aluminum is 0.000023/C°. An aluminum rod 5 meters long is heated so that its temperature rises from 25 °C to 50 °C. What is the change in its length? 3. A rectangular block of concrete has a volume of 5 cubic meters and initial temperature of 30°C. By how much will it expand if the temperature rises by 5 C°? The coefficient of thermal expansion of concrete is 10/C". 4. Cylindrical bars of steel and brass with the same diameter and length are joined at one end. The tenperature of the steel bar is 350 K; brass, 500 K. What is the temperature at the junction? The thermal conductivity of steel is 45 W/mol K; brass, 116.

2. The coefficient of linear expansion of aluminum is 0.000023/C°. An aluminum rod 5 meters long is heated so that its temperature rises from 25 °C to 50 °C. What is the change in its length? 3. A rectangular block of concrete has a volume of 5 cubic meters and initial temperature of 30°C. By how much will it expand if the temperature rises by 5 C°? The coefficient of thermal expansion of concrete is 10/C". 4. Cylindrical bars of steel and brass with the same diameter and length are joined at one end. The tenperature of the steel bar is 350 K; brass, 500 K. What is the temperature at the junction? The thermal conductivity of steel is 45 W/mol K; brass, 116.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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