A small copper wire with a diameter of 0.792 mm and initially at 366.5 K is suddenly immersed in a liquid held constant at 311 K. The convection coefficient h = 85.2 W/m2 · K. The physical properties can be assumed constant and are k = 374 W/m · K, cp = 0.389 kJ/kg · K, and ρ = 8890 kg/m3.Determine the time in seconds for the average temperature of the wire to drop to 338.8 K (one-half the initial temperature difference).Do the same but for h=11.36W/m2·K.Forpart(b),calculate the total amount of heat removed for awire 1.0 m long.

Given k = 374 W/m · K, cp = 0.389 kJ/kg · K, ρ = 8890 kg/m3. h = 85.2 W/m2 · K Find Time, t Heat…

Answered: A small copper wire with a diameter of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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A small copper wire with a diameter of 0.792 mm and initially at 366.5 K is suddenly immersed in a liquid held constant at 311 K. The convection coefficient h = 85.2 W/m2 · K. The physical properties can be assumed constant and are k = 374 W/m · K, cp = 0.389 kJ/kg · K, and ρ = 8890 kg/m3.

Determine the time in seconds for the average temperature of the wire to drop to 338.8 K (one-half the initial temperature difference).
Do the same but for h=11.36W/m2·K.
Forpart(b),calculate the total amount of heat removed for a

wire 1.0 m long.

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