A stick is a connection of two same -diameter metal rod 5 cm , and a length of both stick is 0,6m. The thermal conductivity of the first rod 92 cal /s.m.°C ,
and the second stick 50 cal / s.m.°C . The temperature at the free end of the first rod
100 °C and the free end of the second rod 0 °C , the temperature is kept constant .
Determine heat transfer within 5 minutes .