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.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

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.
e) Explain why the "wind chill" temperature (ie, the temperature it feels like when the wind is
blowing) is colder than the actual temperature of the air.

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