A copper wire, 1/32-in.-OD, 2 in. long, is placed in an air stream whose temperature rises at

Question:

A copper wire, 1/32-in.-OD, 2 in. long, is placed in an air stream whose temperature rises at Tair = (50 + 25t)?F, where t is the time in seconds. If the initial temperature of the wire is 50?F, determine its temperature after 2 s, 10 s and 1 min. The heat transfer coefficient between the air and the wire is 7 Btu/(h ft2 ?F).GIVENA copper wire is placed in an air streamWire diameter (D) = 1/32 in.Wire length (L) = 2 in.Air stream temperature is: Tair = (50 + 25t)?FThe initial temperature of the wire (To) = 50?FThe heat transfer coefficient (hc ) = 7 Btu/(h ft2 ?F)ASSUMPTIONSConstant and uniform heat transfercoefficient