What is the rate of heat loss from a heated horizontal pipe as a result of natural (free) convection that have a length of 1 m and surface temperature of 100 deg C. the ambient air is at 0 deg C and...

Extracted text: What is the rate of heat loss from a heated horizontal pipe as a result of natural (free) convection that have a length of 1 m and surface temperature of 100 deg C. the ambient air is at 0 deg C and the diameter of the pipe is 0.152 m. Film temperature( Tf): averaged boundary layer temperature Tf=50 C. kf=0.03 W/m.K, Pr=0.7, v=2*10-5 m2/s, B=0.0031(1/K) Select one: O a. 320.0805 O b. 285.978 O C. 435.6743 O d. 315.2324