College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300



College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

An iron wire has a cross-sectional area of 5.00 × 10−6 m2. Carry out steps (a) through (e) to compute the drift speed of the conduction electrons in the wire. (a) How many kilograms are there in 1 mole of iron? (b) Starting with the density of iron and the result of part (a), compute the molar density of iron (the number of moles of iron per cubic meter). (c) Calculate the number density of iron atoms using Avogadro’s number. (d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. (e) If the wire carries a current of 30.0 A, calculate the drift speed of conduction electrons.


To determine
The mass of 1 mole of iron.


Given Info: The area of cross section of iron wire is 5×106m2 .


Formula to calculate the mass from number of moles is,


    • n is the number of moles of iron,
    • m is the mass in kilogram of iron,
    • M is the molecular mass of iron,

Substitute 1 mol for n and 55.85gmol-1 for M to find m.



To determine
The molar density of iron.


To determine
The number density of iron using Avogadro number


To determine
The charge carrier density when there are two conduction electron per atom.


To determine
The drift speed of conduction electrons

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

How do ionic and covalent bonds differ?

Biology (MindTap Course List)

In adults with vitamin D deficiency, poor bone mineralization can lead to pellagra. pernicious anemia. scurvy. ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Why have astronomers added modern constellations to the sky?

Horizons: Exploring the Universe (MindTap Course List)

2. In healthy men, the hematocrit is about

Cardiopulmonary Anatomy & Physiology

Must the ratio of guanine to cytosine be 1:1 in RNA? Explain.

Chemistry for Today: General, Organic, and Biochemistry