a. A contractor is concerned about the length of copper hookup wire still on the reel of F...

a. A contractor is concerned about the length of copper hookup wire still on the reel of Fig. 1 He measured the resistance and found it to be 3.14 Ω. A tape measure indicated that the thickness of the stranded wire was about 1/32 in. What is the approximate length in feet?

b. What is the weight of the wire on the reel?

c. It is typical to see temperature ranges for materials listed in centigrade rather than Fahrenheit degrees. What is the range in Fahrenheit degrees? What is unique about the relationship between degrees Fahrenheit and degrees centigrade at — 40°C?

Figure