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A metallic rod at a temperature of 120°F is placed in a room at a constant temperature of 10°F. If after 25 minutes, the temperature of the bar is 70°F, find (a) the time it will take the rod to reach a temperature of 35°F and (b) the temperature of the bar after 50 minutes.

A metallic rod at a temperature of 120°F is placed in a room at a constant temperature of 10°F. If after 25 minutes, the temperature of the bar is 70°F, find (a) the time it will take the rod to reach a temperature of 35°F and (b) the temperature of the bar after 50 minutes.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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1. A metallic rod at a temperature of 120°F is placed in a room at a constant temperature of 10°F. If after 25 minutes, the temperature of the bar is 70°F, find (a) the time it will take the rod to reach a temperature of 35°F and (b) the temperature of the bar after 50 minutes.
Transcribed Image Text:1. A metallic rod at a temperature of 120°F is placed in a room at a constant temperature of 10°F. If after 25 minutes, the temperature of the bar is 70°F, find (a) the time it will take the rod to reach a temperature of 35°F and (b) the temperature of the bar after 50 minutes.
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