2) A 1 in Dia x 3 in long mild steel hammer head is to be heat treated for surface hardening. If the material starts at room temperature (25°C) and must rise to 900 °C, how many Joules of energy will be required to perform this operation? Assume Steel weighs appx 500lb/ft?. Hint: Careful of your mixed units! Material Linear Specific heat Thermal expansivity 10* K capacity conductivity Wm'K Metals Aluminium Сорper Mild steel 24 18 920 385 230 380 480 54 Polymers Polyvinyl chloride Polyethylene Ероху сая гsin 70-80 840-1200 1900-2300 0.3-0.5 1000 0.1-0.2 100-200 45-65 0.1-0.2 Ceramics Alumina Fused silica 750 800 38 0.5 Glass 800

2) A 1 in Dia x 3 in long mild steel hammer head is to be heat treated for surface hardening. If the material starts at room temperature (25°C) and must rise to 900 °C, how many Joules of energy will be required to perform this operation? Assume Steel weighs appx 500lb/ft?. Hint: Careful of your mixed units! Material Linear Specific heat Thermal expansivity 10* K capacity conductivity Wm'K Metals Aluminium Сорper Mild steel 24 18 920 385 230 380 480 54 Polymers Polyvinyl chloride Polyethylene Ероху сая гsin 70-80 840-1200 1900-2300 0.3-0.5 1000 0.1-0.2 100-200 45-65 0.1-0.2 Ceramics Alumina Fused silica 750 800 38 0.5 Glass 800

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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