Question

A cork slab 10 cm thickness, one face at-12 C and the other face at 21"C. If the mean *K' Value of cork is 0.042J/ms"c. What is the rate of heat transfer Im- of wall?
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Answer 1

Answer:

O. k

Explanation:

please mark it as brain liest

Answer 2

Answer:

13.9 J s-1

Explanation:

T1 = 21°C ,T2 = -12°C ΔT = 33°C, x = 0.1 m

  A = 1 m2 , k = 0.042 J m-1 s-1 °C-1    

q =  (0.042  /0.1) x 1 x 33    

   = 13.9 J s-1

• A thicker wall would transfer less energy and a higher temp differential would cause a higher transfer and J/s is the unit.