Voltages and currents often have an exponential shape. We look at some properties of exponential curves and learn how to rapidly sketch accurate waveforms.
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https://www.youtube.com/watch?v=4XHMqvVByFQ
Note: All Khan Academy content is available for free at (www.khanacademy.org)
A worked example finding all force vectors acting on a pendulum moving in a horizontal circle.
View more lessons or practice this subject at https://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/v/identifying-force-vectors-for-pendulum-worked-example?utm_source=youtube&utm_medium=desc&utm_campaign=apphysics1
AP Physics 1 on Khan Academy: Meet one of our writers for AP¨_ Physics, Sean. A physics teacher for seven years, Sean has taught AP¨_ Physics 1, AP¨_ Physics C, and Conceptual Physics. HeÕs also a former mechanical engineer. Sean is based in Boise, Idaho, and is a Khan Academy physics fellow, creating awesome new exercises and articles for AP¨_ Physics.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!
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https://www.youtube.com/watch?v=6UPYPv3LXxk
Note: All Khan Academy content is available for free at (www.khanacademy.org)
SAT exams planned for May and June will not take place due to school closures. Lorraine Hastings from the College Board will join Sal on Daily Homeroom to share updates on the SAT and offer advice for how students can prepare.
For more information visit: keeplearning.khanacademy.org
Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. If you’d like to contribute, please visit:
https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=live&utm_campaign=schoolclosers
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https://www.youtube.com/watch?v=DT0Nl8wVEzM
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Converting to slope-intercept form
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-slope/e/slope-from-an-equation-in-standard-form?utm_source=YT&utm_medium=Desc&utm_campaign=8thgrade
Watch the next lesson: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-slope/v/similar-triangles-to-prove-that-the-slope-is-constant-for-a-line?utm_source=YT&utm_medium=Desc&utm_campaign=8thgrade
Missed the previous lesson?
https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-linear-equations-functions/8th-slope/v/graphing-a-line-in-slope-intercept-form?utm_source=YT&utm_medium=Desc&utm_campaign=8thgrade
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https://www.youtube.com/watch?v=V6Xynlqc_tc
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/plate-techtonics/v/how-we-know-about-the-earth-s-core?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy
Missed the previous lesson? https://www.khanacademy.org/science/cosmology-and-astronomy/earth-history-topic/plate-techtonics/v/pangaea?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy
Cosmology & Astronomy on Khan Academy: The Earth is huge, but it is tiny compared to the Sun (which is super huge). But the Sun is tiny compared to the solar system which is tiny compared to the distance to the next star. Oh, did we mention that there are over 100 billion stars in our galaxy (which is about 100,000 light years in diameter) which is one of hundreds of billions of galaxies in just the observable universe (which might be infinite for all we know). Don't feel small. We find it liberating. Your everyday human stresses are nothing compared to this enormity that we are a part of. Enjoy the fact that we get to be part of this vastness!
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.
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https://www.youtube.com/watch?v=hHteUIS0OFY
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Created by Sal Khan.
Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/world-history/euro-hist/other-fronts-ww1/e/ww1-secondary-fronts?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory
Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/middle-east-20th-century/v/theodor-herzl-and-the-birth-of-political-zionism?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory
Missed the previous lesson? https://www.khanacademy.org/humanities/world-history/euro-hist/other-fronts-ww1/v/italian-front-in-world-war-i?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory
World history on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today.
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https://www.youtube.com/watch?v=NTUjMpfYWwE
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Basic mechanics of monetary and fiscal policy
Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/macroeconomics/aggregate-supply-demand-topic/monetary-fiscal-policy/v/tax-lever-of-fiscal-policy?utm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics
Missed the previous lesson? https://www.khanacademy.org/economics-finance-domain/macroeconomics/aggregate-supply-demand-topic/business-cycle-tutorial/v/the-business-cycle?utm_source=YT&utm_medium=Desc&utm_campaign=macroeconomics
Macroeconomics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course
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.
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https://www.youtube.com/watch?v=ntxMOKXHlfo
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Solving the system of equations visually. Now we can save the prince/princess
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/algebra2/systems_eq_ineq/systems_tutorial_precalc/e/graphing_systems_of_equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Watch the next lesson: https://www.khanacademy.org/math/algebra2/systems_eq_ineq/systems_tutorial_precalc/v/solving-systems-graphically?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Missed the previous lesson?
https://www.khanacademy.org/math/algebra2/systems_eq_ineq/systems_tutorial_precalc/v/trolls-tolls-and-systems-of-equations?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
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https://www.youtube.com/watch?v=H-HfmyUzPw8
Note: All Khan Academy content is available for free at (www.khanacademy.org)
PBS NewsHour piece on the Khan Academy
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https://www.youtube.com/watch?v=HycjWQcAymQ
Note: All Khan Academy content is available for free at (www.khanacademy.org)