A body of unknown temperature was placed in a room that was held at 30° F. After 10 minutes , the body's temperature was 0F , and 20 minutes after the body was placed in the room the body's temperature 15°F. Use Newton's law of cooling to estimate the body's initial temperature. (ans.:-30° F)

A body of unknown temperature was placed in a room that was held at 30° F. After 10 minutes , the body's temperature was 0F , and 20 minutes after the body was placed in the room the body's temperature 15°F. Use Newton's law of cooling to estimate the body's initial temperature. (ans.:-30° F)

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter14: Heat And Heat Transfer Methods

Section: Chapter Questions

Problem 55PE: At what net rate does heat radiate from a 275m2 black roof on a night when the roof’s temperature is...

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Question

1. A body of unknown temperature was placed in a room that was held at
30° F. After 10 minutes , the body's temperature was 0°F , and 20
minutes after the body was placed in the room the body's temperature
15°F . Use Newton's law of cooling to estimate the body's initial
temperature.
(ans.:-30° F)

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