Espresso Media
Chernobyl: Building the New Chernobyl Sarcophagus
Chernobyl part 5/7: This video discusses the construction of the new containment structure at the Chernobyl nuclear power plant.
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Reactions Example 1
Pin supports prevent movement in the x and y directions. This is why there are forces acting on the pin in the horizontal and vertical directions. Roller supports allow movement along one axis which is why there is only 1 force acting...
The Wall Street Journal
Russia, Ukraine and The New World Order
Russia’s invasion of Ukraine has triggered the biggest conflict in Europe since the Second World War. The U.K.’s Chief of the Defense staff talks about how the war has reshaped the balance of power between NATO, Russia and China.
Curated Video
Forces and Couples: Understanding Motion in Physics
The video is about forces and couples. It explains how forces can cause an object to translate, rotate, or both, and how a net force passing through an object's center of mass results in straight line motion. The video also introduces...
Institute for New Economic Thinking
Modeling Imperfect Knowledge and Non-Routine Change
How do you model the unmodelable? By taking seriously the idea of non-routine change. Simply put, change in capitalist economies is to a significant degree non-routine, and thus cannot be adequately represented in advance with mechanical...
Weird History
How a Soviet Soldier Saved the World From Annihilation
You many not be familiar with the name Vasili Arkhipov, but maybe you should be. He's the Soviet Navy man who stopped nuclear war during the Cuban Missile Crisis in the '60s. Arkhipov, AKA the man who avoided nuclear war, somehow...
Flipping Physics
Balloon Excess Charges Experiment
Two 0.0018 kg balloons each have approximately equal magnitude excess charges and hang as shown. If θ = 21° and L = 0.39 m, what is the average number of excess charges on each balloon?
Flipping Physics
(2 of 2) Measuring the Rotational Inertia of a Bike Wheel
1) Calculating if our answer makes sense. 2) Why can’t we sum the torques on everything? 3) Finding the force of tension.
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Tension and Pulleys example 2
To solve problems like these, make isolated cut selection to find each of the variables one at a time. Then use that fact that under reasonable assumptions (massless rope and frictionless pulleys) then the tension in the cable must be...
Professor Dave Explains
Quantum Chromodynamics (QCD)
Electromagnetic force down, three more forces to go! Which one is next? Why it's the strong nuclear force, famous for keeping atomic nuclei together. What kind of particles will be involved in this quantum field theory? Let's find out.
Science360
New sensors to monitor storm surge on bridges
A University of Florida team is starting to gather real-time data on the impact of waves and rising water on bridges during hurricanes. Unlike studies that rely on tests in wave laboratories, this research will use data transmitted...
Flipping Physics
Introductory Rotational Equilibrium Problem
A uniform 0.093 kg meterstick is supported at the 15 cm and 92 cm marks. When a 0.250 kg object is placed at the 6.0 cm mark, what are the magnitudes of the forces supporting the meterstick?
Institute for New Economic Thinking
Wealth & Inequality: Back to the Future
"Let me tell you about the very rich. They are different from you and me." The American novelist F. Scott Fitzgerald is responsible for the quote, but in his scholarship Gabriel Zucman, Assistant Professor at UC Berkeley (and INET...
AllTime 10s
10 Little Known Battles That Changed The Course Of History
History could have been written very differently had these battles not gone the way they did!
Amor Sciendi
NightHawks with HipHughesHistory
Edward Hopper creates a very particular feeling with his 1942 work NightHawks, and does it in a very particular way, but why? Keith Hughes of HipHughesHistory helps us understand a bit better.
Curated Video
Bronfenbrenner's Ecological Systems: 5 Forces Impacting Our Lives
The video discusses Bronfenbrenner's ecological system theory, which proposes that a child's development is influenced by five ecological forces: micro, meso, exo, macro, and chrono systems. It explains how these systems shape a child's...
The March of Time
1951: KOREAN WAR: P.O.W. LIST: MS Newspaper headlines, 'Reds Bow to UN...' VS United Nations officers in room checking prisoner of war lists, checking names on lists. POW
MOT 1951: KOREAN WAR: P.O.W. LIST: MS Newspaper headlines, 'Reds Bow to UN...' VS United Nations officers in room checking prisoner of war lists, checking names on lists. POW
Next Animation Studio
New airstrikes avenge drone strikes against US forces
The Pentagon bombed drone bases in the border region between Iraq and Syria on Sunday 27 June.
Jabzy
Carlist Wars - 3 Minute History
In this video, Jabzy brings us historical tidbits and unknown facts about the Carlist Wars
Tumble Science Podcast for Kids
Physics Helps Falcons Fly Fast
The fastest animal on Earth is not a land animal. The peregrine falcon can fly at speeds of over 200 miles per hour when it hunts for its next meal. It is difficult to study something that moves so fast, so scientists have to use...
Epic History TV
Napoleon 1813: The Road to Leipzig
In 1813, following his disastrous invasion of Russia, Napoleon faced a desperate battle to save his empire. His enemies were gaining in strength, as Prussia and Sweden joined the Sixth Coalition against him, while Russian armies advanced...
Astrum
How Ham Defied All Expectations
Ham was a special chimp. He was the first hominid in space, beating all humans to that acolade. But did his mission go smoothly? Or is his story a tale of survival against all odds?
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Moments Summary
The moment of a force about a point o is given by M = F d. F = magnitude of force d = perpendicular distance from force to point o. Alternatively, the moment vector can be found by using cross products M_o = r x F Direction can then be...
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Impulse and Momentum example 2
For a constant wind force you can play around with the values here and watch a basic simulation: