Class prep · TJ AP Physics 2

Draw the model,then explain the physics.

An independent algebra-based AP Physics 2 prep course, from thermal energy and electric charge through circuits, magnetism, optics and modern physics. Connect physical models, measurements and explanations. Every problem has a full worked solution. Built by Neil Kothari, a TJ alumnus.

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$395 covers the full school year. The first lesson is free.

Try one. This is a test-level question from the course.

Problem 1

Test level
Multiple choice
No calculator
4 pts

Two equilibrium ideal monatomic gases are at the same positive temperature. Each heavy atom has mass $9m$ and each light atom has mass $m$ . What are the ratio $v_{\mathrm{rms,light}}/v_{\mathrm{rms,heavy}}$ and the ratio of average translational kinetic energies per atom, light to heavy?

original problems, each with a worked answer: 546; original problems, each with a worked answer
at test level or beyond: 378; at test level or beyond
short lessons, one for every topic: 42; short lessons, one for every topic
units, all open now: 7; units, all open now

Free lesson

Lesson 1.1: Molecular Motion and Gas Pressure

Connect molecular collisions and random motion to pressure and absolute temperature.

Start with molecular motion and wall collisions. Connect the direction of a momentum change to pressure, and distinguish a single collision from a gas model.

Problem 2

Core
True or false
No calculator
2 pts

True or false: A stationary gas has pressure only where it touches its container; a small imaginary surface drawn entirely within the gas has zero pressure because it is not a solid wall.

Problem 3

Core
Multiple choice
No calculator
4 pts

A fixed amount of one ideal gas is at equilibrium with no bulk flow. It is warmed from one positive absolute temperature to a higher temperature. Which statement follows about its molecular speeds?

Open the rest of this lesson, free

The full lesson and all 13 of its problems, with every worked answer.

How it works

Class prep that works alongside class

AP Physics 2 preparation for students in grades 9 to 12. Work alongside your school course after AP Physics 1 or comparable introductory physics, with precalculus completed or taken concurrently. Each lesson starts with a concrete example, develops the idea, and shows how to check your reasoning before you try the practice.

Original problems in several formats: true or false, multiple choice, multi-part and free response.
Each one is marked core, test level or beyond.
Choose a physical system, interpret field, circuit and optical diagrams, and justify the assumptions behind each calculation.
A worked answer for every problem, ending with the mistake that most often costs points.
Lessons and original diagrams that connect physical models, equations and observations.

What is inside

9Thermodynamics6 lessons · 78 problems
10Electric Force, Field, and Potential6 lessons · 78 problems
11Electric Circuits6 lessons · 78 problems
12Magnetism and Electromagnetism6 lessons · 78 problems
13Geometric Optics6 lessons · 78 problems
14Waves, Sound, and Physical Optics6 lessons · 78 problems
15Modern Physics6 lessons · 78 problems

The front entrance of Thomas Jefferson High School for Science and Technology

Who built it

Neil Kothari

TJHSST alumnus · Co-founder, EduAvenues · 10+ years in TJ preparation

Neil is a TJ alumnus and has spent more than a decade working with TJ students and their families. He built this course so students can connect thermal processes, electric and magnetic models, optics, experimental design and evidence. Every problem is written for the course and every answer is checked before it goes in.

Tuition

$395for the full school year

One tuition covers every unit of the course. All 7 units are open now. The Molecular Motion and Gas Pressure lesson stays free for everyone.

All 7 units: 42 lessons and 546 original problems
A worked answer for every problem
Access through the end of the school year

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