Flipping Physics
from Lightning to Thunder
Calculating distance from seeing lightning to hearing thunder.
Flipping Physics
Introduction to Free Body Diagrams or Force Diagrams
We define and discuss how to draw Free Body Diagrams which are also called Force Diagrams. In addition we define the force normal and the force applied. Force of friction and center of mass are briefly discussed, however, a much more...
Flipping Physics
Relative Motion Problem: Solving for the angle of the moving object
It is not obvious in all relative motion problems how to draw the vector diagrams. Sometimes the velocity of the object with respect to the Earth is not the hypotenuse of the velocity vector addition triangle. Here we address how to...
Flipping Physics
Introduction to Acceleration with Prius Brake Slamming Example Problem
This is an introduction to the concept of acceleration. There is also an example problem showing applying the brakes while driving a car in order to avoid hitting a basketball. Also included are common mistakes students make while...
Flipping Physics
LR Circuits - Review for AP Physics C: Electricity and Magnetism
AP Physics C: Electricity and Magnetism review LR circuits including the basics of how an LR circuit works, the limits, derivations of current as a function of time and time rate of change of current as a function of time, graphs of both...
Flipping Physics
Which Direction will the Wheel Accelerate?
A rope is wrapped around a bicycle wheel. The wheel is released from rest and allowed to descend without slipping as the rope unwinds from the wheel. While descending, does the center of the wheel move straight down, toward the left, or...
Flipping Physics
Dear @MarkRober, Could You Show Your Work Better, Please?
In this video, we discuss the terminal velocity calculations shown in Mark Rober's "Egg Drop From Space" video, and suggest ways to make the work more clear and easier to understand. We also provide a more detailed solution to the...
Flipping Physics
Electric Fields
Electric fields are introduced. The electric field around a positive and negative point charge are shown and compared to the gravitational field around a planet. Uniform electric fields are shown. The electric field from two point...
Flipping Physics
Equations to Memorize for AP Physics C: Electricity and Magnetism
AP Physics C: Electricity and Magnetism review of everything you need to memorize for the exam. Chapters: 0:00 Intro 0:53 Electrostatics 6:53 Gauss’s Law and Electric Flux 12:36 RC Circuits 16:03 LR Circuits 20:05 LC Circuits
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Introductory Moment of Inertia and Rotational Kinetic Energy Problem
Three 20.0-gram masses are 9.4 cm from an axis of rotation and rotating at 152 revolutions per minute. What is the moment of inertia of the three-object system? The strings holding the masses are of negligible mass. Rotational Kinetic...
Flipping Physics
Kepler's Third Law Derivation
Kepler’s third law is derived and demonstrated. This is an AP Physics C: Mechanics topic. Content Times: 0:00 Kepler’s Third Law 0:34 Kepler’s Third Law Derivation 3:38 Satellite mass is irrelevant
Flipping Physics
Work Energy Theorem Example Problem
A 5.0 kg mass experiences a net force causing the object to go from an initial velocity of 4.0 i - 3.0 j m/s to a final velocity of 2.0 i + 6.0 j m/s. What is the net work acting on the mass during this event? Want Lecture Notes?...
Flipping Physics
Cross Product Torque (with a Cross Product Review)
Torque as the cross product is introduced. How to actually perform the cross product using matrices is reviewed and 4.5 examples are walked through. This is an AP Physics C: Mechanics topic. Content Times: 0:00 Torque Review 0:55 Cross...
Flipping Physics
Conservation of Momentum Derivation and Rocket Demonstration
Newton’s Second Law in terms of Momentum is introduced and used to derive Conservation of Linear Momentum. A water rocket in slow motion is used to demonstrate this as well. Want Lecture Notes?...
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Charges in a Circuit Visualization
Using colors to visualize electric potential energy of charges as they move through a circuit.
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Charged Rod Electric Field
In this video, we will determine the electric field at point P, which is located a distance "a" to the left of a thin rod with a positive charge Q, uniform charge density λ, and length L. We will use Coulomb's law and an integral to...
Flipping Physics
"Pillars of Creation" Explanation for Kate
This video is my attempt to help my wife understand the Pillars of Creation. In doing so I show where they are in the Eagle Nebula, define a lightyear, determine how far it is from the Earth to the Sun, demonstrate the speed of sound,...
Flipping Physics
Nonuniform Circular Motion - Force of Tension in a Rope
Determining the force of tension in a string as a function of angular position for a ball moving in a vertical circle. A ball of mass m on the end of a string of length L moves in a vertical circle with a non-constant angular speed ω....
Flipping Physics
Conductors in Electrostatic Equilibrium - Review for AP Physics C: Electricity and Magnetism
AP Physics C: Electricity and Magnetism review of Conductors in Electrostatic Equilibrium including: defining conductors which are in electrostatic equilibrium, deriving the electric field inside the conductors, electrostatic shielding,...
Flipping Physics
Uniform Thin Hoop Rotational Inertia Derivation
Deriving the integral equation for the moment of inertia of a rigid body. Also deriving the rotational inertia of a uniform thin hoop. Want Lecture Notes? http://www.flippingphysics.com/rotati... This is an AP Physics C: Mechanics topic....
Flipping Physics
RC Circuits - Review for AP Physics C: Electricity and Magnetism
AP Physics C: Electricity and Magnetism review of RC circuits including: defining RC circuits, charging a capacitor through a resistor, determining the limits for charge and current, deriving charge and current as functions of time,...
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Wall / Circuit Analogy
Comparing the electric potential energy of a charge moving throng a circuit to a wall falling off a wall.
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Continuous Charge Distributions
Continuous charge distributions are introduced and Coulomb’s Law is used to derive the integral equation which is used to find the electric field caused by a continuous charge distribution. Charge densities are defined. Chapters: 0:00...