Physics
posted by Susie .
A rectangular piece of gold is 3.8 cm long and 2.5 cm wide. How deep is the piece when it displays a resistance of R = 1.35 μω for a current that flows along the depthdirection?

Physics 
drwls
Use the formula that relates resistance to resisitivity. You will have to look up the resisitivity (or conductivity) of gold
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