Question

the inside and outside temperature of a glass window pane is 24°c and 18°c respectively the window is 3mm thik . find its area if 50 kcal of heat escapes in a min ​

Answer 1

Answer:

K=0.2

A=10

θ1=40; θ2=20

t=1; l=0.002

Heat flowing in the room per second will be

Q=KAdxdT

Q=0.0020.2×10×20×1 

Q=20000J