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Understanding Newton's Second Law of Motion: Force, Acceleration, and Mass
This video explains Newton's Second Law of Motion, which states that the amount of force applied to an object affects its speed. Using relatable examples such as Tony pushing a car and a bicycle, as well as pushing empty and full...
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Exploring Newton's Third Law of Motion
This video provides an explanation and examples of Newton's third law of motion, also known as the law of action and reaction. The law states that for every action, there is an equal and opposite reaction. The video illustrates this...
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Energy and Work
2 min video describing the correlation between energy and work - middle school science
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Balancing Forces
short video demonstrating the balance of forces, net force and Newtons
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Gravity is Essential
This video explains the force of gravity and the concept of being weightless when in orbit.
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Why the Sun Shines: The Quantum Explanation
The mass of the sun was well understood, and translates to about 10^57 atoms. This leads to a lifetime of the sun of about 20,000 years. But we know the sun is at least 4.5 billion years old. So where does the sun's energy come from?...
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Why Protons Don’t Repel Each Other in Atomic Nuclei
Since electromagnetism is so strong, multiple protons in the nucleus of any atom like Helium should repel each other very strongly. So how do they stay glued together?...Because of a force that is even stronger than electromagnetism –...
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Exploring the Role of Light in the Universe
What is the purpose of light? How does light work? Why does Light exist? There had been a controversy about whether light was particles or waves. Albert Einstein showed that light must come in discrete packets of energy which today we...
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The Higgs Boson and Higgs Field Explained with Simple Analogies
What is the God Particle? How does the Higgs Boson work? If you were a fish, would you know that the entire world in which you existed was contained in a substance called water? You probably wouldn’t know it because, you had always been...
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What Is the True Source of Mass? The Surprising Science
What is Mass? And Where Does it come from? It's source is going to blow you away! It's (mostly) NOT from the Higgs Field. We tend to think of mass as weight? So for example, you might weigh a 150 lbs. An elephant might weigh 12,000 lbs....
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Is the Universe Fine-Tuned for Life? Arguments For and Against
Some say that it could not have occurred by chance, that there must be some agent, like a god that set up the constants to enable life. Let's just look at the constants associated with the different forces. Gravity: If the gravitational...
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Nuclear Physics Explained Simply
In this video, I summarize All Nuclear Physics in about 10 minutes. Atoms are made of a positively charged nucleus surrounded by negatively charged electrons. The nuclei of atoms are made up of protons and neutrons. These are called...
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Elasticity Explained | Stress-Strain Curve, Hooke’s Law, and Young’s Modulus
Dive into the physics of elasticity—understand stress, strain, and deformation through Hooke’s Law and Young’s modulus. This lesson also unpacks stress–strain curves, plastic vs elastic behavior, and modulus types with real-world...
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Gravitational Attraction with a Hollowed Sphere – Step-by-Step Force Calculation
Learn how to calculate the gravitational force between a hollowed-out sphere and a point mass using mass subtraction and superposition—an essential technique for solving complex gravitation problems in AP and IB Physics.
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Gravitational Acceleration and Free Fall Acceleration (How they differ)
Discover how gravitational acceleration is calculated near Earth and why your weight changes with altitude, latitude, and Earth’s rotation. This lesson unpacks the physics behind g = a₉ − ω²R and shows how gravity subtly varies across...
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Gravitational Superposition Principle Made Simple | Force from Multiple Masses & Extended Bodies Explained
Learn how to calculate gravitational force on a particle due to multiple masses using the principle of superposition. This lesson breaks down vector addition, force from extended bodies using integrals, and how to apply Newton’s law of...
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Newton's Law of Universal Gravitation | Inverse Square Law and Force Formula
Master Newton’s law of universal gravitation through intuitive explanations, real-world examples, and full vector analysis. Learn how to calculate gravitational force, understand the inverse square law, and apply Newton’s third law in...
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Huge parade in North Korea shows off military might
Leader Kim Jong-un celebrated the birth of his grandfather with a giant military parade Saturday, CBC's Saša Petricic reports from Pyongyang
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U.S. vice-president takes firm stand against North Korea
Reiterates American support of South Korea to reporters in Seoul
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How to Force Cards aka Predict a Card
Howcast - Learn how to force cards, aka predict cards, from professional illusionist Ben Nemzer in this Howcast magic tricks video.
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Basic Krav Maga Techniques & Principles
Howcast - Learn basic Krav Maga techniques and principles in this Howcast training video with expert Rhon Mizrachi.
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How to Do a Round Off Handspring Drill in Gymnastics
Howcast - Learn how to do round off handspring drills in this Howcast video with Dulles Gymnastics Academy.
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How to Do a Smith Grind on a Skateboard
Howcast - Learn how to do a smith grind from professional skateboarders Bam Margera and Kerry Getz in this Howcast skateboarding video.
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How to Do the Mind Reading Card Office Magic Trick
Howcast - Learn how to do the mind reading card trick from Magician Roger "Rogue" Quan in this office magic tricks revealed video from Howcast.