Question

The element of 1 kW electric fire
has
a surface
area of 0.006m?
Estimate its working temperature.
[ c The stefan's constant = 5.7 x 10^-8​

Answer 1

Answer:

1. The inner and outer surfaces of a 0.5-cm thick 2- m by 2-m window glass in winter ... The area is (2 m )(4 m) = 8 m2, and the heat ... temperature is 32°C