PH304B - Physics II with Calculus - Spring 2020 - 3 credits

Contact Information

• Instructor: Prof. Evan Tilton (he/him/his)
  • Call me anything you want; I’m not picky. Call me Evan, Prof. Tilton, Dr. Evan, Hey-You…literally whatever you are comfortable with.
  • Please let us know how you would prefer to be addressed and what pronouns you use.
• Contact: etilton@regis.edu; office: Carroll 108C (inside the Math & Physics suite); office phone: 3034584166 (unreliable)
• Course web pages:
  • http://evantilton.com/ph304bs20 - Syllabus
  • WorldClass - Grades, reading surveys
  • Our Slack workspace - Collaboration, solutions, etc. (Invitation link to join the workspace). Please enjoy the giphy integration responsibly.
• Our Spotify playlists. Feel free to add stuff, but please stick to your section! You are especially encouraged to add songs that play with, are about, or pun on the physics topic of the day. I reserve the right to rearrange, modify, or delete from these playlists.
  • Spotify for RU01 (10am class)
  • Spotify for RU03 (1pm class)
• Class Meetings: MWF, 10:00 AM - 10:50 AM or 1PM - 1:50 PM in SCI 130
• Office hours: M & W: 2pm-3pm; Th: 11am-1pm. But I have an open door policy, and am in my office more often than just these times. You’re welcome to talk to me any time I’m here. Outside of scheduled office hours, I might be busy, but I’ll chat with you if at all possible. If you want to be sure that I have time to talk, please email me in advance to make sure I’m available. In general, I am always eager to help you with anything I can!

Overview

In this course, we will discuss the behavior of electric charges. We will see that charges generate electric fields and that charges in motion generate magnetic fields; the fields then cause forces on other charges. We will learn how to calculate these quantities, and we will see how these electric and magnetic fields can store and transfer energy. Furthermore, light can be viewed as a wave that propagates through the electric and magnetic fields; we will conclude the course by contrasting this wave picture of light with the photon model that describes light as a particle.

Tentative schedule of topics and student presentations.

A very rough schedule of the course can be found here; it includes approximate dates of student presentations.

You can sign up for your student presentation at one of the two links below. Be sure to sign up in the correct section.

• Sign up for the 10am section (RU01)
• Sign up for the 1pm section (RU03)

Prerequisites

• Co-requisite: PH 305B (General Physics with Calculus Laboratory II).
• Pre-requisite: PH 304A (General Physics with Calculus I). Note that this course brings with it a mathematics prerequisite of MT 360A (Calculus I).

We will use algebra, geometry, trigonometry, and calculus (both derivatives and integrals) throughout the course. You will also very frequently use all of the concepts that were developed in PH 304A, and you will need to be ready to apply the problem-solving skills that you learned there.

My Classroom Rules – A Commitment to an Inclusive Classroom

More than anything else, this class is a community that values the diversity of experience that each of us brings to our shared journey in physics. My first priority is the creation of an inclusive classroom - one where everyone feels comfortable, intellectually challenged, and able to speak up about your ideas, struggles, and experiences. Our classroom, as well as its virtual extensions, must foster respect, civility, and an ability to listen. I’ll do my best to reach these goals myself, but it is likely that I will err at times. Please let me know if there is anything I can do to make our classroom a more inclusive and productive learning environment. If anyone in our community is vilating our commitment to inclusivity, please let me know. If I am violating this commitment, I welcome criticism so that I may learn to do better, and I encourage you to let me know. If you don’t feel comfortable talking to me directly about it, you are also welcome to raise the issue with our department chair, Dr. Fred Gray (fgray@regis.edu).

You should expect respect from me and your classmates, and you should also endeavor to be kind and respectful to everyone else. That means a lot of things, including:

• Try not to unnecessarily text, browse the web, or otherwise fiddle with electronic devices during class. It can be rude and distracts everyone, and I may ask you to leave if it is disruptive. This will be a bit tricky, because, if you happen to have one, I’ll sometimes have you use your phone or laptop during class. You must exercise some degree of personal discipline, restricting yourself to physics-relevant activities during our fifty minutes together.
• Listen to your peers, and learn from them. Instead of trying to sound smart, try to raise all voices: pay attention to who is contributing, invite contributions from quieter members of the class, and be conscientious of not dominating the conversation.
• Don’t feign surprise. In a learning environment, it’s important that people feel comfortable saying “I don’t know,” so please don’t act surprised when someone says they don’t know something (e.g., don’t say, “What?! I can’t believe you don’t know what X is!”). Feigning surprise has no social or educational benefit; it only makes others feel worse.
• Similarly, don’t pull a well-actually.” A “well-actually” happens when someone says something that’s almost (but not entirely) correct, and you say something like, “well, actually…” and give a minor correction that serves mainly to make the person delivering the well-actually feel more important. If you feel the need to correct someone, take a moment to consider whether your correction is in the spirit of truth-seeking, rather than grandstanding, and whether it will provide a positive contribution to the discussion.
• Lastly, I have little patience for racism, sexism, homophobia, transphobia, ableism, ageism, and other kinds of bias. Subtle -isms of this sort can be particularly tricky, as they are often unconscious behaviors we engage in by mistake, and are sometimes caused by conflicting norms between cultures. For example, saying “It’s so easy my grandmother could do it” is subtle ageism. If you experience these behaviors during the course, you should feel free to bring it up directly with the person, or if it’s more comfortable, point out the behavior to me, another faculty member, or the Office of Counseling and Personal Development. If someone points out that you have engaged in this behavior, it can be tempting to become defensive, but instead, I ask that you apologize, reflect for a moment, and move on. If you do not understand why issue was taken with your behavior, it is fine to discuss it with me and/or the class in a respectful, inclusive manner so that everyone can learn from the experience.

We all make mistakes with others; the important thing is that we learn from them and use it to help others in the future.

Confidentiality and Mandatory Reporting

College students often experience issues that may interfere with academic success such as academic stress, sleep problems, juggling responsibiities, life events, relationship concerns, or feelings of anxiety, hopelessness, or depression. As your instructor, one of my responsibilities is to help create a safe learning environment and to support you through these situations and experiences.

I also have a mandatory reporting responsibility related to my role as a university employee. It is my goal that you feel able to share information related to your life experiences in classroom discussions, in written work, and in one-on-one meetings, so I will seek to keep information you share private to the greatest extent possible. However, under Title IX and the Clery Act, I am required to share information regarding sexual misconduct, relationship violence, or information about criminal activity on or near Regis’s campus with the university.

If you wish to speak about these issues confidentially, the Office of Counseling and Personal Development (OCPD) can help. OCPD is located in the Coors Life Direction Center, Room 114 and can be contacted by phone 24/7 at 303-458-3507. For more information, see www.regis.edu/ocpd.

Important Notes on Expectations and Success

How to Succeed in this Course

The topics that we will cover in PH~304B are among the greatest intellectual achievements of humans. Don’t be surprised if you have to think hard and work hard to understand the material. You can perform very well in this class if you do the things necessary to learn physics:

• Read the chapter before the lecture. Read extremely carefully; do not skim.
• Read with a pen and notebook; read very actively. Make notes while you read, and work out sample problems and steps of algebra skipped by the author.
• Attend every class.
• Don’t attempt the homework without studying the chapter(s) first.
• Don’t get isolated: Work with your classmates to understand the material, study, and complete problem sets.
• Sometimes do get isolated: After working with classmates, always write up and consolidate your knowledge and solutions alone. test yourself to ensure that you understand.
• Start your homework assignments very early. No one is smart enough to do the homework in the last hour before class, and no one is smart enough to learn the material without working problems.
• Don’t fall behind; you might never catch up.
• Just reading the text, attending lecture, and doing the homework is not enough. You have to understand the material. Test your understanding. If you can explain the material, in words, to someone else, without referring to the text, then you understand. If you can complete a problem you’ve never seen before on your own, then you understand. You may need to do many more problems than just those that are assigned in order to understand. This course is not about memorizing; it’s about understanding.

Self-care

One of the most important aspects of success in fields of high levels of intellectual difficulty is self-care. It is also one of the most neglected.

• Get enough sleep, and do so on a regular schedule. One of the biggest predictors of undergraduate success is sleep habits. For example, give this a read. Pulling all-nighters or similar is not useful at all except in the most basic, memorization-based classes.
• Similarly, take care of yourself in other ways. It is extremely important that you work hard, but working without also having complementary rest, relaxation, and self-care, is rarely very productive intellectually.
• We’ll be using various tools that make it very easy to communicate and collaborate – which is great! Be but careful of letting that become an always-online expectaction. You neither have to be responding to electronic communication all the time, nor should you expect that of your peers or me. It is OK and healthy to mentally check-out from those things regularly!

Course communication

We’ll be using WorldClass for grade distribution, but some other digital communications will take place on our Slack workspace. It will host homework solutions and discussions, and you should feel free to chat on it, vent, organize study sessions, etc. I intend to cultivate a rather informal learning community, so you should feel free to make it your space, but please also remember that it is an extension of our classroom at Regis, so you should behave in compliance with the student handbook.

In particular, please note that I will not be answering questions that are purely scientific/mathematical in nature via email. You are welcome to come by my office, ask in class, post on Slack, or contact a peer. I will be enforcing this rule to stress the collaborative nature of physics. You are unlikely to succeed in this class (or any other physics endeavor) on your own; you should make it a priority to support your peers and to accept their help. Collaboration is not only encouraged, it is implicitly required. I strongly suggest that you all frequently get together in person at times in addition to our scheduled meetings to discuss the material of this course.

In all cases, collaboration should be done in a productive, positive, humble, and honest way. You must do so in a way that is both productive for your learning and within the guidelines of the Academic Honor Code. This means that you should never be simply copying or sharing solutions - to do so is both useless for learning and an academic integrity violation. Seriously, don’t cheat, but seriously, help each other. This also means that you should be kind in offering assistance. Be generous, but do not grandstand or belittle. Listen as much as you talk, and always be asking yourself if your conversational approach is truly in service of truth-seeking and care for others.

Course Materials

We’ll be using Volume II of the fourth edition of Matter & Interactions by Chabay and Sherwood. We will be reading from this book right away. You are welcome to obtain this book in any format that you prefer – ebook or printed, though I find that most students do better with a physical book. You are also welcome to get the full version of Matter & Interactions that combines Volumes I and II; sometimes used copies of this version are cheapest, and it is the only version that comes in hardcover format. (Volume I is just the Physics 1 portion of the book, while Volume II is the material we will be covering.) I suggest investigating all purchasing/renting options, though, to make sure you get the format you prefer for the lowest price. In particular, check out these relevant websites:

• For Volume II (the fourth edition of which should have a white and gray cover with lime-green title font):
  • The relevant Amazon pages
  • The relevant publisher ebook/paperback page
  • The relevant publisher looseleaf, unbound version for placing in a 3 ring binder
• For the full 2-semester version that covers Physics I and II (the fourth edition of which should have a white and gray cover with light-blue title font):
  • The relevant amazon pages
  • The publisher print edition page
  • The publisher ebook page

You do not need any online access code to go with the textbook – you only need access to the text itself for reading.

The only other materials you will need are writing implements, paper, and access to an internet-connected device for homework.

Course Activities

Readings

Reading is an essential part of PH 304! Reading the text before class is very important. Our class meetings are to clarify your understanding and to help you make sense of the material. I will assume you have done the required readings in advance and I will not simply repeat everything you should have read! Our book is fairly well written and readable - it will make a huge difference if you spend the time and effort to carefully read and follow the text. The calendar has the details on reading assignments.

Homework

There will be a homework due approximately each week. Homework is arguably the most important part of a physics class – it is where you learn to use the concepts. You should start homework early and work on it consistently. You should treat the assigned problems as the bare minimum number of problems that one could plausibly need to solve to learn material; you should almost certainly be solving more problems than what is assigned for each topic.

You are encouraged to collaborate on difficult homework problems, but you must do so in a way that is both productive for your learning and within the guidelines of the Academic Honor Code. This means that you should never be simply copying or sharing solutions - to do so is both useless for learning and an academic integrity violation. Seriously, don’t cheat. You have no idea how easy it is to spot for your physics professors - the only question is when they decide to enforce it. Don’t gamble your whole academic career on saving some time on a homework problem. Instead, first take some time alone to attempt each problem and create your own ideas as to how they might be solved. Once you’re stuck, get together with classmates to brainstorm, talk through the problems, and work through a viable solution strategy. Finally, separate from the group, and write up a solution on your own, filling in the details. Remember, if you can’t solve similar problems on your own without help, then you haven’t learned the material and will not succeed on the exams or in real-life applications. Test yourself and, most importantly, be honest with yourself! For all assignments, the work you turn in must in the end be your own: in your own words, reflecting your own understanding. If, at any time, for any reason, you feel disadvantaged or isolated, contact me and I can discretely try to help arrange study groups.

You should cite any and all external assistance that you receive on any work - in fact, you should do this everywhere in life! If Angeline Kumar and Gunnarr Skuld helped you with part of a problem, then add a note to that effect (e.g., “Gunnar and I came up with the main idea of the solution together, and Angeline pointed out to me that we were counting the degrees of freedom incorrectly.”). If everyone, when hopelessly stuck, looked at the Wikipedia page for the “Ideal Gas Law” and happened to see a major piece of the solution, cite it explicitly. We all need help with physics sometimes, but we also need to both acknowledge that help and build on it with original thinking of our own.

No late homeworks will be accepted. If you have an illness, family emergency, or similar excused reason for not completing an assignment, then you will be excused from that assignment. It is your resonsibility to go back and work the problems as soon as you can.

Problems will be graded for both correctness and clarity. It is not enough to arrive at a correct answer; you must show a logical process that starts from known, identified physics principles. Your solutions must be written clearly and include diagrams where appropriate. You must work the problems with algebraic symbols before substituting in numbers. If a number has units, you must write them together with the number (every time). You are expected to use vector notation correctly, maintaining the distinctions among a vector, its components, and its magnitude. In particular, please remember that a vector can never be connected to a scalar by an equal sign (since they are fundamentally different classes of mathematical objects) and that the magnitude of a vector can never be a negative number, although any of the components of the vector can be negative. If the problem has a numerical result, credit will be deducted if the answer is unreasonable unless you explain that it is unreasonable.

More specifically, each graded problem will be graded for:

• Completeness and Clarity (30%) – Is each part of the problem fully addressed in a good faith effort? Regardless of correctness, is your reasoning transparent enough, via the words or diagrams, for a peer to understand it?
• Model (20%) – Is your solution using the correct physical principles and applying them correctly?
• Good Notation (20%) – Is your algebra conducted fully with algebraic symbols? Are units included wherever necessary? Are vectors notated correctly?
• Valid Math (20%) – Are all math steps shown, and are they correct?
• Plausibility (10%) – Does your result have a plausible sign, magnitude, and/or units? If not, have you noted that you recognize it as implausible and why?

Additionally, after the solutions have been posted, homework may be corrected with a color-contrasting pen or pencil up until the next homework due date. Up to 75% of lost credit in the Model and Valid Math categories may be earned back. This means, for example, that if your initial attempt is entirely incorrect but well explained, plausible, and correctly notated, you may receive a 60% for the problem due to no credit in Model and Valid Math but full credit in the other categories. This 60% can be raised back up to 90% if you correct your work in light of the solutions. However, you may not simply copy the solutions onto your paper; you must carefully show how you erred and how it should be fixed. For example, you might write something like “In this step, I assumed constant velocity. However, I should have included the acceleration due to the force of friction. Taking this into account, the equation becomes….”

If your solution reflects a lack of careful attention in general, due to problems such as illegibility, it may simply be returned ungraded. Problems that are given zero credit for insufficient attention may not be corrected for credit at all.

This grading system rewards good-faith efforts at engaging with the problems. Because you have multiple opportunities to engage with and revise the problem, I will not comment extensively on the work when I grade it; you are expected to review the solutions online and revise appropriately. You are always welcome to seek help with these tasks in office hours.

Participation

You are expected to attend and fully participate in every class, both for your own learning and out of respect for your classmates. During class, we will have concept questions, problems, and other activities that are graded for participation (not correctness). You will also give one presentation.

There will be a brief reading survey due prior to each class which will also contribute a small amount to this category. Additionally, we will use Plickers to answer questions in class – these will be graded for participation but not correctness.

You will be asked to give a “keynote” teaching presentation that will help you learn to speak more fluently in the technical language of physics, and they will help to create a culture of participation and community in the class. It should be approximately 5 to 10 minutes long, and it should introduce a new concept and set the stage for class discussion and problem-solving. I will provide a list of specific topics and dates for these presentations and ask you to sign up for one that interests you. You will need to prepare visual slides to accompany your presentations. I expect that presentation grades should generally be high, because your presentations will be good. If you give a clear, complete, factually correct, and on-topic presentation with organized slides, you will receive full credit.

I reserve the right to give unannounced in-class quizzes; it is highly unlikely that this will happen if the class is mostly keeping up with the reading and homework, but if dramatic non-participation occurs I will begin giving them without warning (I have never had to do this so far in my teaching career – let’s keep it that way!). There may also be other in-class activities that contribute to this category, depending on the difficulties and interests we encounter along the way.

Exams

Tentative, approximate exam dates are given on the schedule in this syllabus. Firm exam dates will be announced 2-3 classes in advance. These exams will test your understanding of the content from assigned readings, class time, and homework problems. Exams could include a variety of types of questions, including but necessarily not limited to:

• Qualitative, conceptual questions that may be either multiple choice, multiple choice with explanation, short answer, etc. These types of questions will be similar to the conceptual questions in the textbook, conceptual questions I ask you in class or on homework, and in-class activities.
• Quantitative problems similar in scope to the in-class example and assigned homework problems.

The exams will not be tests of what you can memorize; they will require you to apply the principles that you have learned to new situations that you have never seen before. A key part of your studying should thus be solving problems that you have never seen before without looking at the solution until you have solved it yourself. All midterm exams are cumulative, but they will focus most heavily on material introduced since the previous midterm.

For each exam, you may bring a single, hand-written equation sheet, no larger than both sides of an 8.5x11-inch piece of paper. Equation sheets will be collected with the exam and returned to you after the exam is graded. Your sheet may not contain fully-worked example problems. Equation sheets that include fully worked example problems or other significantly non-reminder-like information will be penalized with a substantial reduction of your exam score per my discretion. Calculators are not permitted during exams. No electronic devices, phones, are permitted during exams (except as accommodations for documented disabilities per Regis’s accessibility policies).

Students may only make-up a missed exam if adequate documentation is provided for an excused absence BEFORE the exam day (e.g., Regis sponsored activities, such as sports, travel to academic conferences, etc., illness that can be verified by a doctor’s note, death in the family, etc.). I will follow-up on any documentation that you provide and then decide if your absence is excused; if it is, we will work together to schedule the soonest possible time to make-up the missed exam. The make-up exam may be different from the in-class exam, at my discretion.

All exams are cumulative of everthing covered so far in the course, as well as Physics I and mathematics through Calculus I. Physics is inherently cumulative, always.

Grading and Exams

Your course grade is determined as shown:

You should expect score distributions approximately as follows:

I reserve the right to assign higher grades than would result from this table according to my judgment of the difficulty of the assignments and exams. That is, I will only deviate from this table in such a way that benefits you; no final grades will be adjusted or curved downward relative to the above table under any circumstance. For example, if everyone earned above an 88%, then everyone would get an A, so it is in your interest to work together and help each other learn physics.

Further Policies

Additional syllabus policies, including all university-wide policies, are enumerated here.