(f) I enter a room that has constant temperature 68 degrees Fahrenheit with a cup of coffee that has temperature 168 degrees Fahrenheit. If after one minute, the temperature of my cup of coffee is 148 degrees Fahrenheit, then Newton's law of cooling says that one minute later the temperature of the cup of coffee will be 132 degrees Fahrenheit.

(f) I enter a room that has constant temperature 68 degrees Fahrenheit with a cup of coffee that has temperature 168 degrees Fahrenheit. If after one minute, the temperature of my cup of coffee is 148 degrees Fahrenheit, then Newton's law of cooling says that one minute later the temperature of the cup of coffee will be 132 degrees Fahrenheit.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 48P: A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first...

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A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first omitting the negative sign and then thinking the temperature is Fahrenheit. That is, the person reads xC as xF . Oddly enough, the result is the correct Fahrenheit temperature. What is the original Celsius reading? Round your answer to three significant figures.
For the human body, what is the rate of heat transfer by conduction through the body's tissue with the following conditions: the tissue thickness is 3.00 cm, the difference in temperature is 2.00 , and the skin area is 1.50 m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)
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(b) According to Newton's law of cooling, the rate at which a substance cools in moving air is proportional to the difference between the temperature of the substance and that of the air. If the temperature of the air is 30° and the substance cools from 100° to 70° in 15 minutes, find when the temperature will be 40°.
(3) A Celsius thermometer indicates a temperature of-40°C. (a) What Fahrenheit and Kelvin temperatures correspond to this Celsius temperature? (b) If the temperature changes from-40°C to+10°C, find the change in temperature on the Fahrenheit scale.
According to Newton's Law of Cooling, if a body with temperature T, is placed in surroundings with temperature To, different from that of T,, the body will either cool or warm to temperature T(t) after t minutes, where T(t) =T, + (T, - Tole - kt. 1· A cup of coffee with temperature 135°F is placed in a freezer with temperature 0°F. After 10 minutes, the temperature of the coffee is 60°F. Use Newton's Law of Coling to find the coffee's temperature after 15 minutes. After 15 minutes the coffee will have a temperature of°F. (Round to the nearest integer.)
In a scorching conference room at 900 F, a cool drink at 36°F is put. The temperature is 54°F after fifteen minutes. a) Determine the drink's temperature T(t) after t minutes, assuming Newton's rule of cooling is followed. b)When the drink reaches 74 degrees Fahrenheit,how long does it take?
(a) The specific heat of copper is 92.5 Jkg-1°C¯1. A copper with mass of 250 g was heated to 100 °C. Ah Beng makes a conclusion that the copper now contains 2312500 J of heat. Point out the mistakes in this conclusion and correct them.
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On a cold day, the temperature difference between the inside and the outsideof a certain house is 25°C. Express this value on the Fahrenheit scale.