A hot dog can be considered to be a 12 cm long cylinder, whose diameter is 2 cm and whose properties are p = 980 kg/m3, cp = 3.9 kJ/kg · K, k =1.25 W/m · K, and a = 2 × 10–7 m2 /s. Consider a hot dog initially at 5 C which is dropped into boiling water at 100 C. The heat transfer coefficient at the surface of the hot dog is estimated to be 500 W/m2 · K and the hot dog can be considered to be cooked when its center temperature reaches 90 C.

A hot dog can be considered to be a 12 cm long cylinder, whose diameter is 2 cm and whose properties are p = 980 kg/m3, cp = 3.9 kJ/kg · K, k =1.25 W/m · K, and a = 2 × 10–7 m2 /s. Consider a hot dog initially at 5 C which is dropped into boiling water at 100 C. The heat transfer coefficient at the surface of the hot dog is estimated to be 500 W/m2 · K and the hot dog can be considered to be cooked when its center temperature reaches 90 C.

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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Question

A hot dog can be considered to be a 12 cm long cylinder, whose diameter is 2 cm and whose
properties are p = 980 kg/m3, cp = 3.9 kJ/kg · K, k =1.25 W/m · K, and a = 2 × 10–7 m2 /s.
Consider a hot dog initially at 5 C which is dropped into boiling water at 100 C. The heat
transfer coefficient at the surface of the hot dog is estimated to be 500 W/m2 · K and the hot dog
can be considered to be cooked when its center temperature reaches 90 C.

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