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

Author Question: The electron density in copper is 8.49 1028 electrons/m3. The electron charge is e = 1.60 1019 C. ... (Read 174 times)

cool

  • Hero Member
  • *****
  • Posts: 570
on: Aug 6, 2020

Question 1

Most telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of 24-gauge wire is 137 Ω/mile and the resistance of 26-gauge wire is 220 Ω/mile, what is the ratio of the diameter of 24-gauge wire to that of 26-gauge wire?

◦
1.6

◦
1.3

◦
0.62

◦
0.79

◦
0.88


Question 2

The electron density in copper is 8.49 × 1028 electrons/m3. The electron charge is e = −1.60 × 10−19 C. When a 1.00 A current is present in a copper wire with a 0.40 cm2 cross-section, the electron drift velocity, in m/s, with direction defined relative to the current density, is

◦
−1.84 × 10−6.

◦
+1.84 × 10−6.

◦
−1.84.

◦
−5.43 × 105.

◦
+5.43 × 105.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by cool on Aug 6, 2020

gcook

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Aug 6, 2020
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


cool

  • Member
  • Posts: 570
Reply 2 on: Aug 6, 2020
Gracias!

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Cyclic electron flow. Cyclic electron flow.
Electrons Electrons
Electron microscope photo of mRNA molecules being read by ribosomes. Electron microscope photo of mRNA molecules being read by ribosomes.
What is the density of cesium bromide? What is the density of cesium bromide?
An electron micrograph showing transcription of a gene. An electron micrograph showing transcription of a gene.
How many electrons flow past a given cross section of the wire in 10.3 min? electrons How many electrons flow past a given cross section of the wire in 10.3 min? electrons
Video: Interpreting a cladogram Animation

For a complete list of videos, visit our video library