College Physics 10th Edition by Raymond Serway,Chris Vuille

تمرين 70

Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.40 km long. The density of gold is 19.3 × 10 3 kg/m 3 , and its resistivity is 2.44 × 10 8 m. What is the resistance of such a wire at 20.0°C