Answer:
physic is branch of science in which math is its brother and will deal with the equation,law and evidence of natural phenomenon.
A 4x100 relay is where 4 people run 100 meters and a 4x400 relay is where 4 people run 400 meters
Lower resistivity means higher conductivity: among these materials, the best conductor is silver, therefore it must be the material with lowest resistivity among those. We can also have a look at the value of resistivity of the different materials listed in the problem, to check our answer. The resistivities of the materials are the following:
Wood:

Salt water:

Silver:

Lead:

<span>We see that the material with lowest resistivity among those is silver, therefore the correct answer is silver.</span>
Answer:
2.6h
Explanation:
I attached the image below of the work hope you can see it. Hope this helps!