Arectangular block of metal of resistivity rho has dimensions d x 2d x 3d . a potential difference v is to be applied between two opposite faces of the block.
(a) to which two faces of the block should the potential difference be applied to give the maximum current density?
-to the faces that are a distance "d" apart [answered]
(b) what is the maximum current density j(subscript max) from part a? express your answer in terms of some or all of the variables v, rho(the resistivity of the material), and d.
(c) to which two faces of the block should the potential difference be applied to give the maximum current?
1.to the faces that area a distance d apart
2.to the faces that are a distance 2d apart
3.to the faces that are a distance 3d apart

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.