Question

Review: Radiation from the head is a major source of heat loss from the human body. Model the head as a 21-cm-diameter, 20-cm-tall cylinder with a flat top. Part A: If the body's surface temperature is 35°C, what is the net rate of heat loss on a chilly day? Assume the body is effectively black in the infrared, where the radiation occurs, so use an emissivity of 1. Express your answer to two significant figures and include the appropriate units.

Name: 28 0f 28 review radiation from the head is major source of heat loss from the human body model head as 21 cm diameter 20 cm tall cylinder with flat top part a if the bodys surlace temperatur 59665
Uploaded: 2022-06-07T01:48:03-08:00
Duration: 2 min 18 s
Channel: Sri K
Description: 28 0f 28 review radiation from the head is major source of heat loss from the human body model head as 21 cm diameter 20 cm tall cylinder with flat top part a if the bodys surlace temperatur 59665

          Review: Radiation from the head is a major source of heat loss from the human body. Model the head as a 21-cm-diameter, 20-cm-tall cylinder with a flat top.
Part A:
If the body's surface temperature is 35°C, what is the net rate of heat loss on a chilly day? Assume the body is effectively black in the infrared, where the radiation occurs, so use an emissivity of 1.
Express your answer to two significant figures and include the appropriate units.

Added by Kimberly D.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

06/07/2022

Step 1

Given diameter = 21 cm, height = 20 cm Surface area = 2πr^2 + 2πrh Radius (r) = diameter/2 = 21 cm / 2 = 10.5 cm = 0.105 m Surface area = 2π(0.105)^2 + 2π(0.105)(0.2) Surface area ≈ 0.165 m^2 Show more…

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Review: Radiation from the head is a major source of heat loss from the human body. Model the head as a 21-cm-diameter, 20-cm-tall cylinder with a flat top. Part A: If the body's surface temperature is 35°C, what is the net rate of heat loss on a chilly day? Assume the body is effectively black in the infrared, where the radiation occurs, so use an emissivity of 1. Express your answer to two significant figures and include the appropriate units.