- #1
hsphysics2
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Homework Statement
How much heat will flow in 30 minutes through a 2m X 2m section of concrete (k= 8.36 x 10^-1 J/s m *C) 20 cm thick if the inside temperature if 21*C and the outside temperature is -10*C?
Homework Equations
Not sure but Q/t= {(kA/L} Tkelvin or Q/t= εσAT^4kelvin
The Attempt at a Solution
I did not attempt the solution because i have no idea what formula to use or how to approach a problem like this