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  • Circular motion and vectors (VCE physics unit 3)
    Why do things travel in a circle? What are the forces involved? This tutorial is designed for VCE physics unit 3, but is suitable for any post-16 science qualification such as IB or A-level.
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  • Courses | physexams.com | Main steps in problem solving
    Deep learning the magnetic field concept with numerous solved examples. In this introduction to the magnetism chapter, we covered the magnetic field.
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  • Courses | physexams.com | Main steps in problem solving
    The Main Chapters of courses of PhysExams which are every week updated covering Mechanics-Waves-Thermodynamics-Electromagnetism-Optics-Modern Physics
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  • Exam Center | physexams.com | main steps in problem solving
    The PhysicsExams Main Chapters for Problems listed here choose a category and solve them. The problems in each chapters are weekly updated. In each category, tens of absolutely necessary questions have been solved to improve your success in physics exams.
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  • Study Planner
    Print it out and fill it in to stay organised with your study!
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  • Electric power | Circuits | Physics | Khan Academy
    In this video David derives the formula to find the power used by a resistor. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/voltmeters-and-ammeters?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/ee-kirchhoffs-voltage-law?utm_source=YT&utm_medium=Desc&utm_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Physics channel: https://www.youtube.com/channel/UC0oGarQW2lE5PxhGoQAKV7Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
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  • AQA A-Level Chemistry - Carbon-13 NMR
    This video gives a little bit of background for carbon-13 NMR, including the use of TMS and deuterated solvents (more on both of those are covered in the proton NMR video), followed by how to interpret carbon-13 spectra.
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  • AC and DC Generator PHYSICS
    Generator is a machine that converts mechanical energy into electrical energy. It works based on principle of faraday law of electromagnetic induction. The faradays law states that whenever a conductor is placed in a varying magnetic field, EMF is induced and this induced EMF is equal to the rate of change of flux linkages. This EMF can be generated when there is either relative space or relative time variation between the conductor and magnetic field. AC Generators: These are also called as alternators. It is the most important means of producing electrical power in many of the places since now days all the consumers are using AC. It works based on principle of the electromagnetic induction. These are of two types one is induction generator and other one is synchronous generator. The induction generator requires no separate DC excitation, regulator controls, frequency control or governor. This concept takes place when conductor coils turn in a magnetic field actuating a current and a voltage. The generators should run at a consistent speed to convey a stable AC voltage, even no load is accessible. DC Generators: - DC generator is typically found in off-grid applications. These generators give a seamless power supply directly into electric storage devices and DC power grids without novel equipment. The stored power is carries to loads through dc-ac converters. The DC generators could be controlled back to an unmoving speed as batteries tend to be stimulating to recover considerably more fuel. Advantages of AC Generator - These Generators are generally maintenance free, because of absence of brushes. Easily step up and step down through transformers. Transmission link size might be thinner because of step up feature Size of the generator relatively smaller than DC machine Losses are relatively less than DC machine These Generator breakers are relatively smaller than DC breakers Advantages of DC Generator - Mainly DC machines have the wide variety of operating characteristics which can be obtained by selection of the method of excitation of the field windings. The output voltage can be smoothed by regularly arranging the coils around the armature .This leads to less fluctuations which is desirable for some steady state applications. No shielding need for radiation so cable cost will be less as compared to AC Thanks for watching glowstudy glow study
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  • The Motor Effect | GCSE Physics | Doodle Science
    GCSE Science Doodle Science teaches you high school physics in a less boring way in almost no time! Follow me: https://twitter.com/DoodleSci You can support me at: https://patreon.com/doodlescience Script: When a current passes through a wire it produces a magnetic field. If you put this magnetic field in another magnetic field, it puts a force on the wire. This is known as the motor effect. To determine the direction of the force you use a handy trick called Flemming's left hand rule. The way this works is by taking your left hand and making this shape with it. You then assign your first finger to the direction of the magnetic field, which is always north to south, your second finger to the direction of the current, and your thumb to the direction of the force. For example, in this case, Flemming's left hand rule states that the force would act in this direction. A simple electric motor works using this fact. It works by looping a coil of wire around to two electrical contacts inside a magnetic field. This causes one side of the wire to move up and the other part to move down, which causes the whole thing to spin. It is attached to something called a split ring commutator which is a clever way of swapping the contacts every half turn to keep it moving in the same direction. You can make the motor go faster by either increasing the current or by using a stronger magnetic field. So next time you use your hair dryer, you’ll know something more about the way it spins. References: 1. http://www.bbc.co.uk/education/subjects/zrkw2hv 2. CGP GCSE Physics AQA Revision Guide.
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  • Torque
    052 - Torque In this video Paul Andersen begins by discriminating between translation and rotational motion. He then explains how a torque is the product of the lever arm and the force perpendicular. The lever arm must be perpendicular to the axis of rotation and the force must be perpendicular to the lever arm. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: “Balancing Act.” PhET. Accessed September 4, 2014. http://phet.colorado.edu/en/simulation/balancing-act. MidnightLightning. English: SVG Version of Adjustable Wrench.jpg, April 14, 2009. Own work. http://commons.wikimedia.org/wiki/File:Adjustable_wrench2.svg. Technik, RusCloud-SVG fileThe Lexikon der gesamten. English: SVG Variant of L-Door.png., September 14, 2010. Own work. http://commons.wikimedia.org/wiki/File:L-doorVector.svg.
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  • What Is Torque → Explains the Basics of Torque || By: Kinesiology Kris
    This video is meant to explain the basics of torque and how to increase torque. Kinesiolgy is the study of Human body movement, which uses Torque. º Check out My Web site. www.Kinesiologykris.com º Follow on TWITTER at http://www.twitter.com/Kinesiologykris º Follow on FACEBOOK at http://www.facebook.com/Kinesiologykris º Follow on GOOGLE + at https://plus.google.com/+KinesiologyKris º Donatations BTC: 1LtmWW6s51YXMfo4uGAoQtiCi6XGk52CGE ETH: 0x836681913031E07fD9C8608FEd783Abe6936Ed0A Dash: XoUGxaWao67HHhXz1cbd2QZkWSAUezRtex SIGT: BKi2UQZSnyetM6QvCf8xXwq5vSRc9stYrL
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  • Transformers
    Transformers and electricity transmission
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  • The Concept of RMS
    The abbreviation RMS stands for "root mean square." What do electrical engineers mean when they talk about that? You can learn more about this topic in any edition of "Teach Yourself Electricity and Electronics."
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  • Are GMOs Good or Bad? Genetic Engineering & Our Food
    Are GMOs bad for your health? Or is this fear unfounded? Support us on Patreon so we can make more videos (and get cool stuff in return): https://www.patreon.com/Kurzgesagt?ty=h Kurzgesagt merch here: http://bit.ly/1P1hQIH Get the music of the video here: Soundcloud: http://bit.ly/2okalIy Bandcamp: http://bit.ly/2nCOQnR Facebook: https://www.facebook.com/epic-mountain-music THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US: Richard Martinez, Festive Madman, Christopher Jimenez, William Robertson, Peter, Christin Paul, Sitong Li, Noah T Blanchard, conquesttintin, Lukas Schopphoff, Vivian Wagner, Leon Klang, Max Wahrhaftig, Adrià, Vila Ruaix, Christian Fiedler, Adam Martin, Benjamin Bethea, Robert Smith, Stif, Alexandria Walters, Jack Neubauer, Gabriele Simeone, ComradKing, Michael Malocha, Paul Rozs, Mark Provan, oskars, Dar, Daria Blednova, Joshua Smith, Ke2theKe, Constantin-Marius Jaeck, Christopher Davidson, DK DK, Jon, Richter, Nova Kane, Someone, David Joseph, nsa smith, Husita, Robert Arnaud, SG2 Infinity, Jawnan, Dan Lukas Lundh, Jose Retana, Jake wirtanen, Abdulaziz Al-Kuwari, Roy Malamud, Krishna Yogi, Gonçalo Marques, Duke spork, itamar steigrad, I3aneFuL, Georg Kranz, Shiro Kawa, Janet Kim, Santina Lin, Chris Serdaris, Occam, Radek Starý, Abraham Callahan, Brent Charles, Emil Kampp, Scott Chamberlin-Wibbeke, Sebastian Gemal Vitting, Ray Jobbins, Jacques Quail, Scott Yanos, Tim Preuß, Attila Bögözi, Tarot, Noah Fechter-Dickson, Bogdan Bucur, James Bell, Jarek, Noah T-Blanchard, Adriana Vila SOURCES: #What is natural: GM insulin: http://bit.ly/2ncHaW5 Genetic engineering for thousands of years: http://bit.ly/2eCHKfi http://bit.ly/2mLCvPm CRISPR: http://bit.ly/2ncI2uN # Are GMOs bad for your health GMOs and gene flow: http://bit.ly/2bKauBe terminator seeds: http://n.pr/2o0ADSZ http://bit.ly/2obZ9NS Plants that are destined to be eaten are evaluated by different agencies http://bit.ly/2mLbU5g http://bit.ly/2nGPtNy http://bit.ly/2ncMXf0 GMOs are safe– various studies and reports by respected authorities: National Academies of Science, Engineering and Medicine: http://bit.ly/2o0IT55 An overview of the last 10 years of genetically engineered crop safety research: http://bit.ly/2ot8tfH Letter of 110 Nobel laureates vouching for GMOs: http://bit.ly/295Nvg1 WHO: http://bit.ly/1slbfSV Various others: http://bit.ly/1pEOq9T http://bit.ly/1xq9iGn http://bit.ly/14XU8yl http://pewrsr.ch/1LqMLAe http://bit.ly/2nduCOV http://bit.ly/20BHOsU Bt crops: http://bit.ly/2nd9rg8 herbicide-resistant crops: http://bit.ly/2o5kdJk http://bit.ly/2o5nSGQ # What good GMOs can do Bt eggplants: http://bit.ly/2nHbdsW http://bit.ly/2nvmg89 Gm papaya: http://bit.ly/2nbN0ab http://bit.ly/2nvl6cz http://bit.ly/2ndxPy0 # Look in the crystal ball: drought-resistant crops: http://bit.ly/2mLmnxf plants that produce more nutrients: http://bbc.in/1WxsfnJ vitamin-fortified banana: http://bit.ly/1MKS0sJ nitrogen-fixing crops: http://bit.ly/2mLN9Wn http://bit.ly/2nc9mrZ Chestnut tree: http://bit.ly/1VqkL2D Potential for landsparing: http://go.nature.com/2oc18Sp http://bit.ly/1T1J2NX # Further reading: Bt cotton in India: http://bit.ly/2nH5AdZ http://bit.ly/1JQKG1u Article on popular science: http://bit.ly/2o5oVqp Blog series on GMOs: http://bit.ly/2o18w5X Ecomodernist manifesto: http://bit.ly/1PSVE6n Help us caption & translate this video! http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2 Are GMOs Good or Bad? Genetic Engineering & Our Food
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  • Overview of cell signaling
    Overview of cell signaling. Autocrine, paracrine and endocrine signaling.
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  • Biofuels 101
    Biofuels are combustible fuels created from biomass. Learn more about biofuels and all types of energy at www.studentenergy.org
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  • Mass Spectrometry - Fragmentation
    Overview of fragmentation in Mass Spectroscopy
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