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Author Question: The resistivity of gold is at a temperature of 20C. A gold wire that is 0.50 mm in diameter and 44 ... (Read 133 times)

Awilson837

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on: Oct 11, 2019

Question 1

A jeweler needs to electroplate gold, having an atomic mass of 196.97 g/mol, onto a bracelet. He knows that the charge carriers in the ionic solution are singly-ionized gold ions, Au+, and has calculated that he must deposit of gold to reach the necessary thickness. How much current does he need to plate the bracelet in 3.0 hours? (e = 1.60 × 10-19 C, NA = 6.02 × 1023 atoms/mol)
◦ 9.1 mA
◦ 1800 mA
◦ 540 mA
◦ 33 A

Question 2

The resistivity of gold is at a temperature of 20°C. A gold wire that is 0.50 mm in diameter and 44 cm long carries a current of 380 mA. How many electrons each second pass a given cross section of the wire at 20°C? (e = 1.60 × 10-19 C)
◦ 6.3 × 1015
◦ 2.8 × 1014
◦ 2.4 × 1018
◦ 2.4 × 1017
◦ 1.2 × 1022
Physics ¦ Walker ¦ 5th Edition
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Marked as best answer by Awilson837 on Oct 11, 2019

hramirez205

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Reply #1 on: Oct 11, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Awilson837

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Reply #2 on: Oct 11, 2019
Excellent


hramirez205

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Reply #3 on: Oct 11, 2019
Great! Please up vote :D


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