Example question exploring how mass impacts orbital speed. View more lessons or practice this subject at https://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/newtons-law-of-gravitation-ap/v/impact-of-mass-on-orbital-speed?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics1 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! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=_bBzcwnrLgs Note: All Khan Academy content is available for free at (www.khanacademy.org)

Supermassive Black Holes. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/cosmology-and-astronomy/earth-history-topic/plate-techtonics/v/plate-tectonics-difference-between-crust-and-lithosphere?utm_source=YT&utm_medium=Desc&utm_campaign=cosmologystronomy Missed the previous lesson? https://www.khanacademy.org/science/cosmology-and-astronomy/stellar-life-topic/stellar-life-death-tutorial/v/black-holes?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. ... https://www.youtube.com/watch?v=6FP-hLuAlr4 Note: All Khan Academy content is available for free at (www.khanacademy.org)

How the unemployment rate is calculated. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/unemployment-tutorial/v/unemployment-rate-primer?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Missed the previous lesson? Watch here: https://www.khanacademy.org/economics-finance-domain/core-finance/current-economics/unemployment-tutorial/v/unemployment?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets Finance and capital markets on Khan Academy: Interest is the basis of modern capital markets. Depending on whether you are lending or borrowing, it can be viewed as a return on an asset (lending) or the cost of capital (borrowing). This tutorial gives an introduction to this fundamental concept, including what it means to compound. It also gives a rule of thumb that might make it easy to do some rough interest calculations in your head. ... https://www.youtube.com/watch?v=C9onjpQGpSg Note: All Khan Academy content is available for free at (www.khanacademy.org)

Key tax terms include 'deductions' (expenses that decrease taxable income), 'taxable income' (income subject to tax), 'above the line' (deductions from gross income), 'itemized deductions' (individual expense deductions), and 'standard deduction' (a set deduction amount). Understanding these aids in effective tax planning and financial management. Learn more at https://www.khanacademy.org/college-careers-more/financial-literacy Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/college-careers-more/financial-literacy/xa6995ea67a8e9fdd:taxes-and-tax-forms/xa6995ea67a8e9fdd:tax-forms/v/key-tax-terms 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! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=xDPM2Py7ALw Note: All Khan Academy content is available for free at (www.khanacademy.org)