AT Cycle 32
3/20 - 4/1
W 3/20
Th 3/21
F 3/22
No Homework
M 4/1
🔴 2: Th 3/21a, 🟡 4: W 3/20, 🔵7: W 3/20 - induction review
Today, you'll review for the induction test next class.
Homework: Study for Induction Exam next class - Thursday, March 21st.
🟥❗ 2: Th 3/21b, 🟨❗ 4: Th 3/21, 🟦❗ 7: Th 3/21a - induction assessment
Induction Exam TODAY!
Homework: Prepare to quickly go through the next unit on more mechanics. Feel free to work ahead.
❤️ 2: F 3/22, 💛 4: M 3/25a, 💙7: Th 3/21b - Maxwell's equations
Today, we'll finish out E&M with one final lesson. We'll look at how Maxwell brought everything about electric and magnetic fields together in what we now call "Maxwell's Equations."
We'll learn about displacement current to complete Ampere's Law.
We'll learn about how energy is stored in electric and magnetic fields.
We'll learn about the symmetry in the mutual creation of electric and magnetic fields.
And we'll learn the coolest thing about electric and magnetic fields IMO.
Then, if there's time, we'll do some practice problems collaboratively during class:
📕 2: M 3/25, 📒 4: M 3/25b, 📘7: F 3/22 - ↩️ Pivot air resistance (1)
Today, we will study velocity dependent forces with a lab in ↩️ Pivot Interactives called "Falling Coffee Filters." If you are present for this lab, you may skip the first section in the Pivot "Kinematics of Motion Through a Resistive Media", and start with the section "Drag vs Velocity for Falling Coffee Filters". If you are absent for the data-taking class (next class), then you should do the first section and use the Vernier Video Physics web app which is accessible through ClassLink.
In this lab, we will investigate the concepts of air resistance (drag) and terminal velocity. You'll be analyzing videos you take and graphing position vs. time and velocity vs. time in Vernier. You'll see how drag force relates to velocity. Make sure to add rows in the data table to have 6-7 trials.
By the end of this lab, you will be able to:
Describe the force of air resistance.
Describe the motion of an object falling in the presence of air resistance.
Describe how air resistance varies with velocity.
Name some other variables that affect air resistance other than velocity.
Name some real-life situations where air resistance is beneficial or detrimental.
Homework: Lab due in ↩️ Pivot on Wednesday, April 3rd at 10pm. Watch the following video on velocity dependent forces. At time 6:00, pause the video and practice solving the differential equation on your own. (It will probably be faster than watching the whole video.) After you make your best attempt, fast forward to see if you were right. Then, at 17:00, listen to the notes at the end. (Just for fun, what do you get when you cross Veritasium with Myth Busters? How dangerous is a penny dropped from a skyscraper?)