What Is the Steady State Rate of Heat Flow Through

question 29

Multiple Choice

What is the steady state rate of heat flow through a pane of glass that is 40.0 cm by 30.0 cm with a thickness of 4.00 mm when the outside temperature of the glass is -10.0°C and its inside temperature is 25.0°C? The thermal conductivity of glass is 0.105 W/(m • K) ,the specific heat of glass is 0.180 cal/(g • °C) ,and 1 cal = 4.190 J.

• A) 24.2 W
• B) 3.81 W
• C) 18.6 W
• D) 47.3 W
• E) 110 W

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