3. A metallurgist wants to goldplate a thin sheet with the following dimensions: 1.5 in. x 8.5 in. x 0.0012 in. The gold plating must be 0.0020 in. thick. (a) How many grams of gold (p = 19.3 g/cm³) are required? (b) How long will it take to place the sheet from AUCN using a current of 7.00 A? Assume 85% efficiency.

3. A metallurgist wants to goldplate a thin sheet with the following dimensions: 1.5 in. x 8.5 in. x 0.0012 in. The gold plating must be 0.0020 in. thick. (a) How many grams of gold (p = 19.3 g/cm³) are required? (b) How long will it take to place the sheet from AUCN using a current of 7.00 A? Assume 85% efficiency.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 86CP: Consider a square rod of material with sides of length L = 3.00 cm with a current density of...

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