3. This problem will help you understand why the wind blowing makes you feel colder, especially in the winter. You are outside on a cold day. The air temperature overall is around 5° C; assume your skin temperature is 16° C a) If you stay outside for a while and there is no wind, the air around you will eventually increase in temperature past 5° C. Explain why the air heats up, using the idea of conduction. b) What is the highest temperature the air around you can reach? Explain. c) As the air around you warms up, explain why you start cooling down more slowly. d) If the wind blows, convection happens: the warm air around your body is blown away, replaced by more 5° C cold air. In this case, will you cool down more quickly or more slowly? Explain.

3. This problem will help you understand why the wind blowing makes you feel colder, especially in the winter. You are outside on a cold day. The air temperature overall is around 5° C; assume your skin temperature is 16° C a) If you stay outside for a while and there is no wind, the air around you will eventually increase in temperature past 5° C. Explain why the air heats up, using the idea of conduction. b) What is the highest temperature the air around you can reach? Explain. c) As the air around you warms up, explain why you start cooling down more slowly. d) If the wind blows, convection happens: the warm air around your body is blown away, replaced by more 5° C cold air. In this case, will you cool down more quickly or more slowly? Explain.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.10P

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