This topic contains a solution. Click here to go to the answer
« previous next »

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 119 times)

Awilson837

  • Hero Member
  • *****
  • Posts: 509
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
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by Awilson837 on Oct 11, 2019

hramirez205

  • Sr. Member
  • ****
  • Posts: 345
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.
Answer Preview
Only 29% of students answer this correctly


Awilson837

  • Hero Member
  • *****
  • Posts: 509
Reply #2 on: Oct 11, 2019
Excellent


hramirez205

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Oct 11, 2019
Great! Please up vote :D


« previous next »
 

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Temperature cycles for 24 hours Temperature cycles for 24 hours
Body Temperature Responses Body Temperature Responses
Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer
Connect a fused jumper wire to supply 12 volts to terminal 86 and a ground to terminal 85 of the ... Connect a fused jumper wire to supply 12 volts to terminal 86 and a ground to terminal 85 of the ...
Cocoa butter melts at body temperature Cocoa butter melts at body temperature
An athlete facial expression after winning a gold medal An athlete facial expression after winning a gold medal
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library