1. The problem statement, all variables and given/known data A 40-cm-long, 0.6-cm-diameter electric resistance wire is used to determine the convection heat transfer coefficient in air at 25 degrees C experimentally. The surface temperature of the wire is measured to be 150 degrees C when the electric power consumption is 90 W. If the radiation heat loss from the wire is calculated to be 30 W, the convection heat transfer coefficient is : ? 2. Relevant equations Q (convection) = h * A * (delta T) h = stefan-boltzmann constant A = surface area 3. The attempt at a solution I set the equation equal to h and solve. I get h = 0.318 W/ M^2, which is not one of the given answers (multiple choice). Two things that confuse me : 1 .Why was I given the amount of radiation transfer when all of the other information pertains to convectrion? (I think this might be a typo, I'm going to email my instructor) 2. Why was the amount of power going through the wire ( 90 Watts ) given? Do I need this information?