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Online classes are convenient, but they usually don’t offer the support of a traditional university. If you find yourself wishing you had a tutor to guide you through a difficult math problem or essay question, free websites offer you the ability to ask questions and get answers online.
Yahoo! Answers
Yahoo! Answers lets users ask questions and receive answers from fellow users. Topics include arts and the humanities, science, and mathematics, and education and reference. Users who provide answers receive points based on their responses. Almost all questions receive a quick answer. Many responders seem to be young, so be prepared for quips along with helpful responses.
Hippo Campus
HippoCampus delivers videos, animations, and simulations on general education subjects to middle-school and high-school teachers. Students can use the site for homework and exam preparation. Users don't need to register or log in. HippoCampus is powered by The NROC Project, a nonprofit, member-driven group focused on new models of digital content development, distribution, and use.
Answerology
Answerology users can answer each other's questions and form “Question Groups” that track the questions on a homework topic. Questions and answers tend to be more social than academic but would be useful in essays.
Ask a Librarian
This Library of Congress service lets students ask questions and receive emailed responses from librarians. The site asks users to avoid sending homework questions, though it can be used for research issues. Answers are typically sent within five business days. Some topics offer online chat. A virtual reference shelf also is provided.
Free Math Help
This site, launched in 2002, typically sees more than a million visitors a month during the school year. Everything on the site is free , supported by advertising, though some links take you to fee-based sites.
Ask Philosophers
Hosted by the University of Amherst , this site allows users to ask philosophical questions and receive responses from philosophers. Answers are posted within a few days. The website warns submissions won't be posted if they're unintelligible, vague, clearly scientific, concern a personal problem, or have other issues. You can search to see if your question has already been answered.
Ask a Linguist
Questions are answered on the website by linguistics students and faculty at Indiana University's Linguistics Department . Responses focus on language and language analysis regarding issues with substantial linguistic content or content of wide interest within the discipline.
Ask a Geologist
Email questions about earth sciences to this site, and United States Geological Survey scientists will respond if your homework question is among the 88 percent answered. Include the word "Question" in the subject line. USGS scientists have responded since 1994 but won't answer test questions, write reports, answer questions with direct financial impacts, recommend products or companies, or identify rocks from photos.
Go Ask Alice!
Questions to the site, hosted by Columbia University’s health department , are answered by health care professionals, information and research specialists, and writers. Team members have advanced degrees in fields such as public health, health education, medicine, and counseling. The site came online in 1994; 20 years later, more than 4 million people were visiting monthly.
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Tutorials in Introductory Physics 1st Edition, Peter S. Shaffer
Tutorials in introductory physics 1st edition peter s. shaffer , lillian c. mcdermott publisher: addison wesley isbn: 9780130970695, view more textbook editions, solutions for tutorials in introductory physics, browse all chapters of this textbook, book details.
This landmark book presents a series of physics tutorials designed by a leading physics education research group. Emphasizing the development of concepts and scientific reasoning skills, the tutorials focus on common conceptual and reasoning difficulties. The tutorials cover a range of topics in Mechanics, E & M, and Waves & Optics.
Sample Solutions for this Textbook
We offer sample solutions for Tutorials in Introductory Physics homework problems. See examples below:
More Editions of This Book
Corresponding editions of this textbook are also available below:
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Welcome to Physics Homework - Questions & Answers
This site started back in 2008 and features, among others, a collection of physics homework exercises and tutorials for all levels of physics students (high school and college).
We hope our site will help you advance in your studies and make it easier to understand physics, hence the world around us!
All the content was written by Valentin Bogatu (Physics, PhD).
Please help us spread the word. This site is free (supported by advertising) and your help is necessary to keep us going. Thank you for your visit.
Analog and Digital Communications (Physics 227/623)
2. Problem 2.11. Use the function and sample rate of problem 2.10. Let Δ = 0.5V (see p. 109 in text). Sketch the resulting staircase approximation (superimposed on s(t)) and… Click here to read more
Physics 227/623, Assignment #3 (Analog and Digital Communications)
1. Problem 2.1. Do parts (a) and (c), skipping (b). Sketch the waveform for the first 1 msec, rather than 3 msec. Use 3 bits plus a sign bit, i.e.,… Click here to read more
Coffee Drop Experiment
Coffee drop experiment For the coffee filter the graph of position shows that it does not bounce out. Although we have done a fit with a quadratic equation, the coefficient… Click here to read more
Ball Drop Experiment
Ball drop experiment Data was recorded for position and velocity as function of time. For position the floor is considered to be at a distance of 2 m. We have… Click here to read more
Effective Charge Laboratory
The definition of the effective charge In this paper we will determine the effective charge of an electron. The effective charge is by definition the ratio (e/m). Background Information and… Click here to read more
Spherical shell potential (Griffiths)
The charged sphere A spherical shell has spherical symmetry and because of this we write its potential as $V(R,\theta)=V_0(\theta)$ ($\theta$ is the “polar” angle of the spherical coordinate system). a)… Click here to read more
Icy slope and sled
The icy slope A frictionless icy slope of angle $\theta$ having a length $L$, followed by a horizontal portion, then by a bump ($R$) make a frictionless path as in… Click here to read more
Moment of Inertia
Circle moment of inertia Find the principal moments of inertia of a circle of radius $R$ and mass $m$. Use the integration over the circle length. (Hint: first define the… Click here to read more
Wien Bridge
The Bridge In the figure is presented a Wien Bridge. When its two arms are at equilibrium ($R1*R3=R2*R4$) the voltage on the Wien bridge diagonal cancels. You apply to this… Click here to read more
Analog-Digital Converter
The Analog-Digital Converter The input range of a 10 bit ADC varies from +0.1..+4.9V. a) What input step size has this analog-digital converter? b) For a full scale sine wave… Click here to read more
Pendulum Lab. Interference
Pendulum Laboratory The equations of pendulum are $T= C * \sqrt{L/g}$ (1) $T= 2\pi * \sqrt{L/g} * [1+(1/2)^2*\sin^2(x/2)+(3/4)^2*\sin^4(x/2)]$ (2) 1. For which angle is the period given by pendulum equation… Click here to read more
Supernova Expansion
The supernova expansion In a supernova explosion, initially the supernova expands freely. Then the supernova enters a new stage when in the existent gas around the star, shock waves push… Click here to read more
Acoustic Impedance
Pipe Acoustic Impedance Let us suppose that we want to send an acoustic wave from left towards right through a series of connected pipes having different areas. What is the… Click here to read more
Falling Electron (on Nucleus)
The falling electron Using the classic EM framework, a falling electron $e^-$ (a negative charge) emits energy/time as $W= (2/3)*(a^2e^2/c^3)$ (erg/s) where $a$ is the acceleration of the falling electron… Click here to read more
Motorola M68000 Assembler
MOVE and CLR 8. If the value stored in the data register of Motorola M68000 D0 = \$ABCD1234, what is the data found in register D0 at the end of… Click here to read more
Velocity versus Time
Velocity as function of time You are given the dependence of velocity as function of time from the figure. Please find the position as function of time from the given… Click here to read more
Planet Distance
Question 1 A classic radiotelecope detects a planet’s hydrogen emitted waves of $\lambda=21 cm$. If the signal emitted by a planet has a wavelength that is 0.28 cm longer than… Click here to read more
Right shift and left shift
In general dividing by 2 is equivalent to right shifting with 1. Also left shifting with 1 is equivalent to multiplication with 2. (a) Is a right shift equivalent to… Click here to read more
Geometric Optics for EM wave
EM wave propagation An EM wave goes through the athmosphere of Earth (considered inhomogeneous) having an index of refraction of $n(z)$. This index of refraction depends on altitude $z$ as:… Click here to read more
Hermitian or not?
Hermitian definition Please find if $(\overrightarrow p*\overrightarrow r)\overrightarrow L$ is hermitian or not. Please state the definition of a hermitian matrix? Which are the matrixes or $\hat r$, $\hat p$… Click here to read more
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If you are having trouble with your online classwork, these free question-and-answer websites can help untangle the knottiest issues. Hero Images/Getty Images Online classes are convenient, but they usually don’t offer the support of a trad...
Now, with expert-verified solutions from Introductory Physics 1st Edition, you'll learn how to solve your toughest homework problems. Our resource for
Now, with expert-verified solutions from Tutorials in Introductory Physics 1st Edition, you'll learn how to solve your toughest homework problems.
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Textbook solutions for Tutorials in Introductory Physics 1st Edition Peter S. Shaffer and others in this series. View step-by-step homework solutions for
The tension force due to tension in the thread. The coulomb's force is acting on th… View the full answer. answer image blur.
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The First Law of Thermodynamics Tutorials in Introductory Physics Homework Answers - Free download as PDF File (.pdf) or read online for free.
Pressure in a Liquid Tutorials in Introductory Physics Homework Answers - Free download as PDF File (.pdf) or read online for free. Pressure in a Liquid
Use the function and sample rate of problem 2.10. Let Δ = 0.5V (see p. 109 in text). Sketch the resulting staircase approximation (superimposed on s(t))
Stuck on a tricky physics problem? Study.com has answers to your toughest physics homework questions with detailed, step by step explanations.