The class is about Electricity and Magnetism. The website wants exactly the perfect answer and in the same metric system units that are stated on the calculators that are on the picture for the question, if not, it'll mark it wrong.

Hot Wires The wiring in a house must be thick enough so it doesn't become so hot as to start a fire. What diameter must a copper wire be if it is to carry a maximum current of 30 A and produce no more than 1.47 W of heat per meter of length? d = mm abc sin(x) Ox10 Submit Reset Reset All .See Table 25-1 for the resistivity of copper