(1) A copper wire 0.8 mm diameter at 150°C is suddenly dipped into water at 35°C. If h=85.5 W/m²K, estimate the time required to cool the wire to 95°C. (ii) If the same wire were placed in air instead of water what would have been the time required to cool it to 95°C. h=11.65 W/m²K For Copper: p= 9000 kg/m³, c = 0.38 kJ/kg K, k = 373 W/mK

(1) A copper wire 0.8 mm diameter at 150°C is suddenly dipped into water at 35°C. If h=85.5 W/m²K, estimate the time required to cool the wire to 95°C. (ii) If the same wire were placed in air instead of water what would have been the time required to cool it to 95°C. h=11.65 W/m²K For Copper: p= 9000 kg/m³, c = 0.38 kJ/kg K, k = 373 W/mK

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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