For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm x 1.00 cm copper sheet. You want the total zinc thickness to be 140 nm (70 nm on each side), and you know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m³ . Part A If the electroplating apparatus operates at 1.40 mA, how long will it take the zinc to reach the desired thickness? Express your answer in seconds to three significant figures.

For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm x 1.00 cm copper sheet. You want the total zinc thickness to be 140 nm (70 nm on each side), and you know that the charge carriers in the ionic solution are divalent (charge 2e) zinc ions. The density of zinc is 7140 kg/m³ . Part A If the electroplating apparatus operates at 1.40 mA, how long will it take the zinc to reach the desired thickness? Express your answer in seconds to three significant figures.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter5: Electric Charges And Fields

Section: Chapter Questions

Problem 93P: A spherical water droplet of radius 25 m carries an excess 250 electrons. What vertical electric...

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