3. A metal object at 120°F is set on an insulating pad to cool. The temperature falls from 120°F to 100°F in 12 minutes. The surroundings are 65°F. Find the time required for that object to continue to cool from 98°F to 80°F. Assume negligible conduction and radiation losses in both cases.
3. A metal object at 120°F is set on an insulating pad to cool. The temperature falls from 120°F to 100°F in 12 minutes. The surroundings are 65°F. Find the time required for that object to continue to cool from 98°F to 80°F. Assume negligible conduction and radiation losses in both cases.
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Transcribed Image Text:3. A metal object at 120°F is set on an insulating pad to cool. The temperature falls from 120°F to
100°F in 12 minutes. The surroundings are 65°F. Find the time required for that object to continue
to cool from 98°F to 80°F. Assume negligible conduction and radiation losses in both cases.
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