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PHYS 115 B: Heat, Fluids and Electricity and Magnetism

MWF 11:30am - 12:20pm / PAA A118
T 5:00pm - 6:20pm / KNE 130
David P. Smith

Syllabus Description:

Topics covered

Phys 115 covers the following topics:

  • electric fields and forces
  • electrical potential and potential energy
  • capacitors
  • circuits, Ohm’s law, Kirchhoff’s laws
  • RC circuits
  • magnetic fields and forces
  • thermodynamics
  • ideal gas law
  • thermal expansion
  • calorimetry
  • heat transfer
  • diffusion
  • pressure, buoyancy, fluid dynamics, and viscosity


This course has two components: lecture and tutorial.  Each component has several important aspects. You can see all the aspects required in a given week in Modules.

This website describes recommended practices to succeed in this course, and this website contains a list of resources you may find helpful for a variety of issues students may encounter during your time at UW.  We highly recommend the following:

  • Creating a weekly schedule to organize when you will work on the various course components.  We have posted sample weekly schedule here.
  • Working in groups.  We encourage you to work with others on assignments.  You can use Piazza to post questions or answer others' questions, or to find people interested in forming a study group.  I will also monitor the Piazza discussion board frequently and will respond if needed.
  • If you have any questions, attend office hours so that they can be addressed.

Contact me if you need help finding the resources you need.

Contact Information

For questions send an email with your course and section (Phys 115B), your UW net ID (the part before in your email address), and name as it appears on Canvas to:

  • the instructor, David Smith at, for personal correspondence related to grades, health issues, etc...
  • Office hours for week 1 are on Monday 2-3, Tuesday 10-11, Wednesday 2-3, and Thursday 11-12 at this link
  • the program coordinator at for administrator questions related to registering, overloading, etc...

Course Material

The platform for online assignments is MyLab and Mastering through which you also access the e-textbook.

Learning Catalytics is used for in-class quizzes.

The textbook used is College Physics A Strategic Approach, 4th edition, by Knight Jones Field.

Please note that you have already purchased the access code for the eTextbook and MyLab and Mastering as a part of your registration fee.

Information on how to access MyLab and Mastering and troubleshooting for common issues can be found here.


Class components

This class consists of the following components. For more details of each, click the links below.

Lecture overview

We will use a flipped classroom model, which has been shown to improve student learning.

  • Before each scheduled lecture you need to complete the assigned reading (see schedule below).  Note that you should not expect to understand all the reading after reading it once. However, you should at least be familiar with the concepts covered, but not necessarily able to apply them.
  • During lecture I will briefly review the reading, but most of the time will be used for you to work on problems individually, and then to discuss them with your peers.  This discussion with peers is one of the most effective ways to learn, so it is important to attend lectures if possible.

Lectures are from 11:30 AM to 12:20 PM on Monday, Wednesday, and Friday in lecture hall A118 of PAA. I will post lecture slides under the Files. If you cannot attend lecture in person due to minor illness etc., you can attend lectures via live-streaming on Panopto and participate in the in-class quizzes, the recording of which will be also available under the "Panopto Recordings" menu on the left.

Tutorial overview

In tutorial you will work with your peers to discuss problems designed to develop a conceptual understanding of physical laws though a research based scaffolded discovery process.  Initially you may find the questions challenging and not easy to answer on your own.  Tutorial sections are designed to be a comfortable environment for you to make mistakes.  In the process you will learn how to reflect on your reasoning and to identify where you might make errors.

Tutorials are from 5PM to 6PM on Tuesday (unless they are exam days) in a large lecture hall 130 of KNE. Similarly to lectures, tutorial sessions will be live-streamed where you can attend remotely and watch the video later.

Graded components

  • Pre-lecture reading quiz (25% of grade):
    • After completing the reading you need to answer questions on MyLab and Mastering before 11:59 PM on the day before the corresponding lecture.
    • You have up to 5 attempts for each question. For each wrong answer 10% of the grade is subtracted.  Note that practice problems, adaptive follow-ups, and dynamic study modules available also through Mastering are not graded, but great for your study.
    • Pre-lecture reading quiz score will be scaled by 1.25 at the end of quarter (but not allowed to go over 100%).
  • Lecture/Tutorial in-class quizzes (10% of grade):
    • Participating in in-class quizzes on Learning Catalytics requires you to bring a web enabled device to lecture. If you do not own a web enabled device, you can loan for free from the university. See this site for more details. Please contact me if you have problem accessing to a web enabled device.
    • Some questions may be graded purely on participation, but most are graded 80% for participation and 20% for the correct answer. At the end of the quarter the total in-class quiz score is scaled by 1.25, but truncated at 100%.
    • If you miss a lecture due to a valid reason (family and medical emergency etc.), please contact me, and your in-class quizzes can be excused. 
  • Tutorial pretest (5% of grade):
    • These are designed to get you thinking about your ideas on topics covered in this course.  They are graded based on a thoughtful attempt, not on correctness.
    • These become available Friday at 3:30 PM and are due on Sunday at 11:59 PM.
    • Once you start a pretest, you will have 30 minutes to complete it without the ability to pause.
    • Your lowest tutorial pretest score will be automatically dropped.
    • If you miss more than one tutorial pretest due to a valid reason (family and medical emergency etc.), please contact me, and your tutorial pretest score can be excused. 
  • Exams (60 % of grade): 

Important note:

Each exam includes questions based on the lectures and tutorials, so missing a lecture or tutorial section can have an impact on your exam performance.  If you miss a lecture or tutorial, make sure to work through the missed material to minimize the impact on your course grade.

The exam procedure is described here.

The following dates are preliminary and may change.

    • Midterm exam 1 on Tuesday February 1st from 5:00 to 6:00 PM in Kane Hall
    • Midterm exam 2 on Tuesday February 22nd from 5:00 PM to 6:00 PM in Kane Hall
    • Final exam on Wednesday March 16th from 2:30 PM to 4:20 PM in PAA A118

Note that there are no make-up exams.  So, students with outside professional, service, or career commitments (i.e. military service, ROTC, professional conference presentation, NCAA sports, etc.) conflicting with the exam dates must contact me early in the quarter to establish alternate examination procedures.  Exam scores for students who miss an exam without making prior arrangements will be zero.

Each exam is out of 100 points, and has three components:

    • 80 points on lecture material
    • 20 points on tutorial material

Exams will count for 60% of your grade.  Your overall exam score will be based on the best of the following two methods:

    • Method 1: 60% of your average score of the exams (2 midterms and the final)
    • Method 2: 20% from your best midterm score and 40% from your final exam score

We will design the exams such that a student who understands some of the material very well but needs some improvement in the remaining material should get a score around 65%.  If the class average on a given exam is less than 65%, then all the scores for that exam will be adjusted upward so that the average is 65%. Scores will not be adjusted downward even if the class average is higher than 65%.

If a student is found responsible for misconduct during an exam, a score of zero will be given for that exam for this student.  If the misconduct occurs during a midterm, only Method 1 is used to calculate the final grade, and Method 2 is not used.


  • Your final weighted percentage is converted to a grade point using the following thresholds. 
    grade point final course score   grade point final course score   grade point final course score   grade point final course score
    4.0 93.0 3.0 78.0 2.0 63.0 1.0 48.0
    3.9 91.5 2.9 76.5 1.9 61.5 0.9 46.3
    3.8 90.0 2.8 75.0 1.8 60.0 0.8 44.6
    3.7 88.5 2.7 73.5 1.7 58.5 0.7 42.9
    3.6 87.0 2.6 72.0 1.6 57.0    
    3.5 85.5 2.5 70.5 1.5 55.5    
    3.4 84.0 2.4 69.0 1.4 54.0    
    3.3 82.5 2.3 67.5 1.3 52.5    
    3.2 81.0 2.2 66.0 1.2 51.0    
    3.1 79.5 2.1 64.5 1.1 49.5    

Reading schedule

Reading Schedule

Research Study Information

This course is part of a research project  examining student reasoning ability and attitudes about physics with the goal of  improving physics teaching.  By enrolling in this course you are automatically included in the study. Early in the quarter, students will have an opportunity to learn about the study and to remove themselves from the study if they wish. Your instructor will not know whether or not you participate. Later in the quarter,  this link  will become active and allow you to review the details of the study, contact a member of the research team, or remove yourself from the study.

Access and accommodation

Your experience in this class is important to us, so if you have a temporary health condition or permanent disability that requires accommodations (conditions include but are not limited to: mental health, attention-related, learning, vision, hearing, physical), please contact DRS to arrange accommodations.

Safe campus

We are committed to ensuring a safe environment on campus.  We encourage you to check out the resources available here.

Religious Accommodations

Washington state law requires that UW develop a policy for accommodation of student absences or significant hardship due to reasons of faith or conscience, or for organized religious activities. The UW’s policy, including more information about how to request an accommodation, is available at Religious Accommodations Policy ( Accommodations must be requested within the first two weeks of this course using the Religious Accommodations Request form (

Academic integrity and student conduct

The University takes academic integrity and student conduct very seriously.  Behaving with integrity and respect is part of our responsibility to our shared learning community.  Acts of academic misconduct may include, but are not limited to, cheating by working with others or sharing answers on exams.

Please note that taking photos or recording instructors, other students, and course materials without permission is strictly forbidden.  Streaming or posting inappropriate materials on any course platform is also not allowed. 

All the course materials including exam and quiz questions, lecture notes, lecture videos are intellectual properties of the instructor and the University of Washington. Distributing them in any form without permission is forbidden.  

The University of Washington Student Conduct Code (WAC 478-121) defines prohibited academic and behavioral conduct and describes how the University holds students accountable as they pursue their academic goals.  Allegations of misconduct by students may be referred to the appropriate campus office for investigation and resolution.  More information can be found online at

If you’re uncertain about if something is academic or behavioral misconduct, ask us.  we are willing to discuss questions you might have.

Catalog Description: 
Principles of heat, fluids, and electromagnetism using algebra-based modeling with an emphasis on applications in life sciences. Maximum 5 credits allowed for any combination of PHYS 115, PHYS 118, PHYS 122, and PHYS 142. Prerequisite: either a minimum grade of 1.7 in PHYS 114, PHYS 121, or PHYS 141, a score of 4 or 5 on Physics B advanced placement test, a score of 4 or 5 on AP Physics 1 advanced placement test, or a score of 4 or 5 on Physics C (Mechanics) advanced placement test. Offered: AWSpS.
GE Requirements: 
Natural Sciences (NSc)
Section Type: 
Last updated: 
September 23, 2022 - 9:32pm