Physics Girl Archive Channel

140123 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 16 (Simple Harmonic Motion) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you! Exercises in this video: 1. A. Find the length of a pendulum that swings with a period of 4.0 seconds on Earth. B. What would the period be on the Moon? 2. A. Your 1000 kg car is bouncing up and down on its four identical suspension springs with a period of 1 second. What is the spring constant of those springs? B. What would the period be on the Moon? Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Kaitlyn Today - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

180123 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 15 (Angular Momentum) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you! More fun exploration of water spinning angular momentum demo from Steve Mould and Smarter Every Day: https://www.youtube.com/watch?v=M4-L8UgPkOk Exercises in this video: 1. A box and a sphere are sliding and rolling, respectively, down a ramp. If they start from the same height, and we ignore friction on the box, which will reach the ground first? What if it were a full soda can and an empty soda can? 2. A sphere of mass 4kg rolls down a ramp, starting with a height of 5 meters from the ground. How fast is the sphere rolling when it gets to the ground? 3. If every person on Earth ran around the equator in the same direction, what would their total angular momentum be? Use 65 kg as the average mass of the 7.8 billion people on Earth, and let them run at 5m/s. 4. Given 8 x 10³⁷ kg•m² as the Moment of Inertia of Earth, by how much would all those people running change the angular speed of the Earth? Special thanks to Kari Byron for her wonderful shoutout at the end of the video! You can follow her on Twitter @KariByron and Instagram @therealkaribyron. Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Kaitlyn Today - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

251220 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 14 (Rotation and Torque) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. If you are standing on Earth’s equator (radius about 6380km), how fast are you going? What is your rotational velocity? What is your angular velocity? 2. A tiny cat, mass 0.50kg is clinging to the edge of a record spinning at 45rpm. If the radius of the record is 0.10m, what is the frictional force keeping that cat moving in a circle? 3. If Dianna, mass 60 kg, is standing on a scale on the equator, what does the scale actually read? 4. Dianna and Marie want to balance on a seesaw. But Marie has 3 times Dianna’s mass. How far away from Dianna should they move the fulcrum in order to balance the seesaw? Special thanks to propulsion engineer Diana Alsindy for her awesome shoutout at the end of the video! You can follow her on Twitter @DianaAlsindy Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Rachel Watson - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

160123 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 13 (Collisions) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. Are the following collisions elastic or inelastic? - Asteroid hitting Earth? - Spitball smacking into your friend? - Pool balls hitting each other? - Water balloon hitting your face? - Newton’s cradle? - Bumper cars colliding? - A car crash? - Subatomic particles colliding? - Black holes colliding? 2. A toy train of mass 2kg, traveling at a speed of 12m/s, collides with an identical train at rest. They stick together. What is the new speed of the trains? How much energy was lost to heat in that inelastic collision? 3. A pool ball traveling at 2m/s directly hits an identical, but stationary, pool ball. What are the velocities of each ball after the collision? Special thanks to cosmologist Dr. Katie Mack for her awesome shoutout at the end of the video! You can follow her on Twitter @AstroKatie Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Rachel Watson - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

120123 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 12 (Conservation of Momentum) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. Compare the momenta of two objects: one with a mass of 260kg moving at 20m/s, and the other with a mass of 1950kg moving at 1m/s. 2. What are two different (common) ways to represent the units of momentum? 3. You and your spherical space cow push off of each other, in space. The cow, which has a mass of 100kg, ends up with a speed of 2.5m/s. Your mass is 50kg. What will your velocity be after the push? 4. What is the total impulse of a rocket that thrusts with a force of 7600kN for 162 seconds? Special thanks to Cheyenne Polius for her awesome shoutout at the end of the video! And thank you to the Planetary Society for allowing us to use the footage for their awesome light sail. Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Rachel Watson - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

150123 Like and subscribe. This is an archive, check the link in the end if you are owner. As part of THE GREAT GIFT EXCHANGE, Physics Girl is transported to a whimsical “Wrapshop” to wrap a charitable gift for creator Alex Wassabi. With help from The World’s Most Famous Gift Wrap Artist, Physics Girl creates an EXPLOSIVE gift wrap and deep dives into the science of paper folding. https://rumblevideoarchive.wordpress.com/

121220 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 11 (Power) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1A) You carry a 1kg backpack up a 6m hill. How much work did you do? 1B) It took you 60 seconds to walk up that 6m hill. What average power did you exert carrying up the backpack? 1C) You ran faster up the hill a second time. It only took you 30 seconds. What average power did you exert over this time, to move the pack? 1D) The energy required to move the pack is the same in both cases. Why are you more tired after the second, faster run? 2. How many Joules are in a kWh? 3.On a given day, 2800 cubic meters of water fall over Niagara falls every second. If that water falls 50m, what is the average power of the water splashing onto the rocks below? 4. For reasons, you are hauling yourself up with a rope attached to a platform you’re standing on. The rope goes over a pulley attached to a tree, and back into your hauling hands. Your total mass (you+platform) is 100kg. You are hauling yourself up at a rate of 4 m/s. How much power are you exerting? Special thanks to Allen Pan for his awesome shoutout at the end of the video! Check out his channel @allenpan Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Kailtyn Ali - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

291120 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 10 (Conservation of Energy) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. You compress a spring by 0.2 cm. You measure a restorative force of 0.55N. What is the spring constant of that spring? 2. A scary amusement park shoots you and your friend 80 meters into the air. The total mass of the people and car in the ride is 400 kg. What work was done by gravity on the trip up? How much potential energy is now stored in the gravitational field? 3. All of that energy (in the previous problem) came from around 700 springs, in parallel, each compressed by 1.25 meters. What is the spring constant of each of those springs? 4. Can you use conservation of energy arguments to show that Dianna is wrong, and the back of the roller coaster is by far the best place to sit? Special thanks to Sophia Chen for her awesome shoutout at the end of the video! Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Rachel Watson - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

121120 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 9 (Work and Energy) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. A rocket pushes a space cow, from rest, with a Force of 100N, over a distance of 10m. How much work did the rocket do? What is the final kinetic energy of the cow? How fast is the cow moving? 2. You lift a 10kg cow, with a constant velocity, 10m up. How much work did you do? How much potential energy is stored in the gravitational field? 3. You drop the cow 10m onto a big cow airbag. How fast was the cow moving right before she hit the airbag? How fast would a cow with twice as massive be moving with the same setup? 4. A giant wrecking ball with 80kg mass, is dropped from a height of 35m. It bounces off of a trampoline and reaches a height of 14m on the return trip. How much energy was lost to heat in the bounce? 5. A square cow slides down a frictionless ramp, starting at a height h above the ground. At the bottom the cow starts sliding along the ground. How far does the cow slide, in terms of m, g, h, and u, where u is the coefficient of friction between the cow and the ground? [u is mu] Special thanks to Mark Rober for his encouraging shoutout and to Simone Giertz for letting me almost hit myself in the face with a bowling ball at her workshop. Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Kaitlyn Ali - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

010921 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 8 (Gravitation and Orbits) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: 1. An object with mass M is a distance R from the center of the earth. Another object with mass 2M is at a distance 3R from the center of the earth. What is the ratio of the forces between each object and the earth? 2. What is the force of gravity between the Earth and a pineapple with mass of 1kg, if the pineapple is falling near the Earth’s surface? 3. What would the acceleration due to gravity be on a planet with half the radius, but twice the mass of Earth? 4. The ISS orbits with an average altitude of 410 km. What is its orbital velocity? What is its orbital period? 5. Extras Credit: What is the orbital velocity of an object orbiting the Earth at a height of 35,800 km above the Earth’s equator? (Don’t forget to add in the Earth’s radius!). What is the orbital period? Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Victoria C. Page - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

231020 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 7 (Circular Motion) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem1: You have a one kilogram ball on a two meter long string. You swing it in a circle so it goes around once every two seconds. What’s the tension in the string? Problem 2: What is the magnitude of the centripetal force keeping the Earth moving in its orbit around the Sun? Problem 3: The coefficient of friction between tires and the road is about 1.0. At what angle should we bank our road if the average speed of cars driving on the road is 80 km/hr? (Don’t forget to convert to m/s!) Thank you to Derek Muller from Veritasium for his incredibly kind shout out at the end of the video, and for encouraging people to pursue physics! And thanks to Lizzie Armanto for letting me use her footage! Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Victoria C. Page - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription Velodrome Photo: https://flic.kr/p/cSkSDQ Fritz Zwicky Portrait: http://www.zwicky-stiftung.ch https://rumblevideoarchive.wordpress.com/

150123 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 6 (Friction) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem1: The coefficient of friction between your car’s tires and concrete is 0.7. Your car’s mass is 1000kg. If you slam on your brakes and the tires lock, what is the magnitude of the sliding friction force acting while you slide? What is your acceleration? Problem 2: You put your cow on a ramp. Moo. Then you tilt the ramp up, slowly. Just when your cow starts to slide, you measure the ramp angle as 34º. What is the coefficient of static friction between the cow and the ramp? Thank you to atrophysicist Naomi Rowe-Gurney for her awesome shoutout at the end of the video! You can follow her on Twitter @nrowegurney Credits: Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Victoria C. Page - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

021020 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 5 (Free Body Diagrams) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem 1: Draw a free body diagram (FBD) for a bottle of nail polish falling straight down. Draw a FBD for a soccer ball kicked at at an angle, after the kick. What about during the kick? Problem 2: You are standing on a scale in an elevator that is accelerating upwards at a rate of 2.0 m/s². If your mass is 58kg, what does the scale read in Newtons? What would it read if you were decelerating at 2.0m/s² (accelerating at -2.0 m/s²) Problem 3: We built a human-sized Atwood machine using two masses: 65kg and 79kg. The masses fell 2.0 meters from rest and it took 2.2 seconds. What do we get for “g”? What are some possible sources of error? Problem 4: You build an Atwood Machine where the masses have a ration of 4:5. What will the acceleration of the masses be? Special thank you to the amazing Bill Nye for his shoutout at the end of the video! Credits Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Spenser Reich - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Hope Butner - Production Assistant Levi Butner - Videographer Kyle Kitzmiller - Consultant Andy Brown - Curriculum Consultant Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Rachel Allen - Illustrator Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants Cathy Cowern - Transcription https://rumblevideoarchive.wordpress.com/

270920 Like and subscribe. This is an archive, check the link in the end if you are owner. Take a look at a bubble and you’ll see all the colors of the rainbow... right? WRONG. Bubbles are actually missing colors! Check out Self-Evident on PBS Voices: https://youtu.be/Bwsne4eMVyU My Patreon! https://www.patreon.com/physicsgirl If you liked this video, check out: Only some humans can see this type of light: https://www.youtube.com/watch?v=CSu0cV3fqi8 How rainbows with NO COLOR are possible: https://www.youtube.com/watch?v=qJuhi6zn1ZY http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner Production Assistant: Hope Butner Thanks to Ben Ryder for the amazing footage of wave interference from his YouTube channel: https://www.youtube.com/channel/UCnIDbkWZ-92D2REQefJuoHA The awesome folks who shared their bubble pictures with me on twitter!: Andy Callaway, Philip Palermo, lifewithjess, Danny Thomas, Cate McCleery, @SbastienAndrie4, and so many more that didn't make it into the video. Special thanks to our Sally Ride level patrons: David Cichowski, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, Patrick Olson, Vikram Bhat, wc993219. Join the Physics Girl Patreon community! ►► https://www.patreon.com/physicsgirl Sources: Wave interference video footage provided by Ben Ryder's YouTube channel: https://www.youtube.com/channel/UCnIDbkWZ-92D2REQefJuoHA https://rumblevideoarchive.wordpress.com/

230920 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 4 (Newton's Laws of Motion) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem 1: You push your square space cow, mass 5kg, with a force of 10N. What will be the acceleration of your space cow? Problem 2: Your tiny cow has a mass of 1kg and is standing in a field in Kansas. What force does Earth’s gravity exert on the cow? Problem 3: You are suspending two cows from the ceiling, one below the other. You have really strange hobbies. The lower cow has a mass of 2kg. The upper cow has a mass of 1kg. What is the tension in the rope between the top cow and the ceiling? Problem 4: Now you have two square cows, one mass 4kg, the other mass 2kg, lined up on a frictionless surface. You push on the first cow such that the two cows accelerate at 2 m/s^2. What force does the second cow exert on the first? Special thank you to astrophysicist and folklorist Moiya McTier for her shoutout at the end of the video! Find Moiya on Twitter @GoAstroMo Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Victoria C. Page - Video Editor Sophia Chen - Researcher/Writer Erika K. Carlson - Researcher/Writer Levi Butner - Videographer Hope Butner - Production Assistant Darren Dyk - Slow Motion Cinematography Andy Brown - Curriculum Consultant Lauren Ivy - Set Design Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Alicia Cowern - Transcription Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants https://rumblevideoarchive.wordpress.com/

160920 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 3 (2D Motion & Kinematics) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem 1 You’re jumping off a 10m high cliff with an initial horizontal velocity of 2m/s. Some rocks extend 1m out at the base of the cliff. Will you clear the rocks? By how much? Problem 2 Kick a ball at a speed of 20m/s at an angle 37º above the ground. a. How long is the ball in the air? b. How far away is the ball when it lands? c. How high did the ball go? Problem 3 Juliet throws an egg at Romeo’s window. The bottom of the window starts 6m above the ground, and the window itself is 1m tall. The egg leaves Juliet’s hand 1 m above the ground, traveling 30m/s at an angle of 60º with respect to the ground. Does she hit the window? Executive Producer/ Host/ Writer: Dianna Cowern Lead Writer & Course Designer: Jeff Brock Producer: Laura Chernikoff Video Editor: Spenser Reich Researcher/Editor: Sophia Chen Videographer: Levi Butner Production Assistant: Hope Butner Set Design: Lauren Ivy Curriculum Consultants Lucy Brock & Samantha Ward Consulting Producer: Vanessa Hill Curriculum Consultant: Andy Brown Skate Videographer: Darren Dyk Consultant: Kyle Kitzmiller Illustrator: Aleeza McCant Transcription: Alicia Cowern & Cathy Cowern https://rumblevideoarchive.wordpress.com/

180920 Like and subscribe. This is an archive, check the link in the end if you are owner. Creator/Host/Writer: Dianna Cowern Producer: Laura Chernikoff Head Writer: Jeff Brock Researcher/Writer: Sophia Chen Editor: Levi Butner Exercises in this video: Problem 1: 1. You are running north-east at a speed of 4 m/s. What component of your velocity is north? How about east? Problem 2: You are kite-surfing and your kite is pulling you upwards at an angle of 60º with respect to the ocean, with a force of 1200 Newtons. What component of that force is up? How much of it is sideways, parallel to the water? Problem 3: Extra Credit: You are swimming across a river, swimming perpendicularly to the current. You can swim 1 m/s. The river has a current of 2 m/s. With respect to the shore, what is the angle of your resulting velocity vector? How fast are you swimming over the riverbed? Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Levi Butner - Videographer/ Video Editor Sophia Chen - Researcher/Writer Hope Butner - Production Assistant Andy Brown - Curriculum Consultant Set Design - Lauren Ivy Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Alicia Cowern - Transcription Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants https://rumblevideoarchive.wordpress.com/

160521 Like and subscribe. This is an archive, check the link in the end if you are owner. Check out David Blaine's video with Physics Girl's Dianna Cowern: https://www.youtube.com/watch?v=HZCJ8kZ2IKY ASCENSION full Livestream: https://www.youtube.com/watch?v=QwzvNAAqH3g David Blaine casually floated up to 25,000ft over the Arizona desert holding 52 helium balloons. I was invited to witness the testing and preparation! Thanks to David Blaine, Luke Aikins, and the rest of the team for having us and for taking such good health and safety precautions! Thanks to Kyle Kitzmiller. http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner Production Assistant: Kyle Kitzmiller Research: Sophia Chen Research: Hope Butner Research: Patrick Muhlberger Sources: Victorians who flew as high as jets: https://www.bbc.com/future/article/20160419-the-victorians-who-flew-as-high-as-jets FAA Info on Decompression Sickness https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/dcs.pdf Cerebral Hypoxia Information https://www.ninds.nih.gov/Disorders/All-Disorders/Cerebral-Hypoxia-Information-Page https://rumblevideoarchive.wordpress.com/

030920 Like and subscribe. This is an archive, check the link in the end if you are owner. Lesson 2 of Dianna's Intro Physics Class on Physics Girl. Topic: Freefall. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: Problem 1: If we drop a wrecking ball from a height of 35 meters, how long will it take to fall? Problem 2: The ball bounces on a trampoline. It takes the ball 1.7 seconds to reach its maximum height. What is the height? How fast was the ball going when it left the trampoline? Problem 3: You dive off a diving board, 5 meters high, into a pool. You end up 2.5 meters deep in the pool. Assuming constant acceleration, what was your acceleration while the pool water was you slowing down? Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Victoria Page - Video Editor Sophia Chen - Researcher/Writer Levi Butner - Videographer Hope Butner - Production Assistant Darren Dyk - Slow Motion Cinematography Andy Brown - Curriculum Consultant Set Design - Lauren Ivy Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Alicia Cowern - Transcription Consultant - Kyle Kitzmiller Lucy Brock, Samantha Ward - Curriculum Consultants https://rumblevideoarchive.wordpress.com/

190820 Like and subscribe. This is an archive, check the link in the end if you are owner. Breaking the bottom out of a glass bottle by hitting the top is a challenging trick, but involves a ton of physics. The explanation is related to cavitation - a process seen in the Mantis Shrimp attack, head injuries and pouring honey! Creator/Host/Writer: Dianna Cowern Editor/Videographer: Levi Butner Research/Writer: A.J. Fillo Research: Meredith Fore Slow Motion Cinematography: Darren Dyk Thanks to Ed Ivory, Hope Butner and Kyle Kitzmiller Sources: Instructional YouTube Video Guy: https://www.youtube.com/watch?v=lDMcrvjDpCY Usage: https://phys.org/news/2020-04-pierce.html Cancer treatment: https://physicsworld.com/a/tuned-ultrasound-selectively-disrupts-the-structure-of-cancer-cells/ Mantis shrimp footage: Maya Devris and YouTube/Deep Look Shark Footage: Jan Acosta 2010 Propeller footage and animation created and owned by IET Institute for Energy Technology, University of Applied Sciences Rapperswil Bullet Footage provided by DSG technology https://rumblevideoarchive.wordpress.com/

050820 Like and subscribe. This is an archive, check the link in the end if you are owner. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! In this class we will cover these topics: 1D Motion Free Fall 2D Motion Newton’s Laws Free Body Diagrams Friction Circular Motion Gravity & Orbits Energy & Work Energy Conservation Power Momentum Impulse Collisions Rotation Angular Momentum Simple Harmonic Oscillations Waves Sound Electric Charge DC Circuits Creator/Host/Writer: Dianna Cowern Producer: Laura Chernikoff Head Writer: Jeff Brock Researcher/Writer: Sophia Chen Editor: Levi Butner https://rumblevideoarchive.wordpress.com/

060820 Like and subscribe. This is an archive, check the link in the end if you are owner. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: PROBLEM 1 A girl is riding her bike with a constant velocity of 10 m/s. How far has she gone after 7 seconds? Graph her motion both in x vs t, and v vs. t. Show her displacement on both graphs. PROBLEM 2 A driver is driving at a constant velocity of 20 m/s. She steps on the gas at t=0 and accelerates to 30 m/s with constant acceleration. It took her 4 seconds to accelerate. How far did she go in those 4 seconds? Graph her motion on a v vs t graph and show the displacement on that graph. PROBLEM 3 A biker, biking at 10 m/s hits a tree and comes to a complete stop. Assuming a helmet “crumple zone” of 10 cm, what is the minimum acceleration her head could undergo? How many “g”s is that? Dianna Cowern - Executive Producer/Host/Writer Jeff Brock - Lead Writer/Course Designer Laura Chernikoff - Producer Spenser Reich - Video Editor Sophia Chen - Researcher/Writer Levi Butner - Videographer Hope Butner - Production Assistant Darren Dyk - Slow Motion Cinematography Andy Brown - Curriculum Consultant Set Design - Lauren Ivy Vanessa Hill - Consulting Producer Aleeza McCant - Illustrator Alicia Cowern - Transcription Lucy Brock, Samantha Ward - Curriculum Consultants https://rumblevideoarchive.wordpress.com/

130123 Like and subscribe. This is an archive, check the link in the end if you are owner. How likely are you to get sick on an airplane? How safe are airplanes? The science of ventilation and bioaerosol research. If you liked this video, check out: What stretching actually does to your body: https://www.youtube.com/watch?v=1JgBp7dX4AU Only some humans can see this type of light: https://www.youtube.com/watch?v=CSu0cV3fqi8 Creator/Host: Dianna Cowern Video Editing: Levi Butner Research/writing: Sophia Chen Writing/Editing: Dianna Cowern Special thanks to our Sally Ride Patrons! Special thanks to our Sally Ride level patrons: Alejandro Gutierrez, Brian O'Connell, David Cichowski, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, Patrick Olson, Vikram Bhat, wc993219. Join the Physics Girl Patreon community! ►► https://www.patreon.com/physicsgirl Thanks to Malin Alsved, Hope Butner and Kyle Kitzmiller. http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Credits: Some Stock footage provided by Videvo, downloaded from www.videvo.net Resources: https://pdfs.semanticscholar.org/3a69/98741b1e14fe3e15d5fe0bc6ed4e58d83475.pdf?_ga=2.94557724.129545850.1594340593-1120174445.1589328977 [1977 info and H1n1 stat are in Lei 2017, with further details about 1977 flight here: http://blog.h1n1.influenza.bvsalud.org/en/2009/09/28/influenza-air-transmission/] [THERE’S THIS VERY COMPREHENSIVE TABLE OF RECOMMENDATIONS FROM A TRADE ASSOCIATION, THAT IS COOL TO JUST RUN THROUGH. YOU CAN PICK THE EXAMPLES YOU LIKE, BUT I’LL JUST HIGHLIGHT A FEW THAT I FOUND INTRIGUING.] https://www.ashrae.org/File%20Library/Technical%20Resources/Standards%20and%20Guidelines/Standards%20Addenda/62-2001/62-2001_Addendum-n.pdf [Source: https://www.designingbuildings.co.uk/wiki/Indoor_air_velocity] http://epibulletins.dhss.alaska.gov/Document/Display?DocumentId=888 https://www.smithsonianmag.com/smart-news/study-maps-how-flu-virus-moves-around-plane-180968541/ Transmission of COVID-19 virus by droplets and aerosols: A critical review on the unresolved dichotomy https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7293495/ https://lbourouiba.mit.edu/sites/default/files/documents/14BourouibaBush-sneezecloudJFM_corrected.pdf https://up.codes/s/outdoor-airflow-rate https://www.technologyreview.com/2020/07/07/1004841/a-group-of-239-scientists-say-theres-growing-evidence-covid-19-is-airborne/?itm_source=parsely-api Timeline of COVID-19 https://www.who.int/emergencies/diseases/novel-coronavirus-2019/events-as-they-happen https://www.who.int/emergencies/diseases/novel-coronavirus-2019/technical-guidance/naming-the-coronavirus-disease-(covid-2019)-and-the-virus-that-causes-it#:~:text=The%20International%20Committee%20on%20Taxonomy,two%20viruses%20are%20different. Ventilation rates on airplanes: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.304.7321&rep=rep1&type=pdf Ventilation rates inside: https://www.epa.gov/indoor-air-quality-iaq/how-much-ventilation-do-i-need-my-home-improve-indoor-air-quality Transmission rates on airplanes https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7165818/ https://rumblevideoarchive.wordpress.com/

160123 Like and subscribe. This is an archive, check the link in the end if you are owner. If you liked this video check out these: HOME CHALLENGE: 20 Easy Experiments in 5 mins https://www.youtube.com/watch?v=8aaXZDazPxs Laser Cooling: https://www.youtube.com/watch?v=hFkiMWrA2Bc Special thanks to our Sally Ride level patrons: Alejandro Gutierrez, Brian O'Connell, David Cichowski, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, Patrick Olson, Vikram Bhat, wc993219. Join the Physics Girl Patreon community! ►► https://www.patreon.com/physicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner Thanks to Hope Butner and Laura Chernikoff! https://rumblevideoarchive.wordpress.com/

220520 Like and subscribe. This is an archive, check the link in the end if you are owner. Dianna from Physics Girl walks through 5 experiments with jello, lasers, balloons, surface tension, band-aids and candles, with some bonus facts and trivia! If you liked this video check out these other Physics Girl videos: 7 Science Tricks with Surface Tension https://www.youtube.com/watch?v=WsksFbFZeeU HOME CHALLENGE: 20 Easy Experiments in 5 mins for Bored Adults and Kids at School Inside https://www.youtube.com/watch?v=8aaXZDazPxs Special thanks to our Sally Ride Patrons: Alejandro Gutierrez, Brian O'Connell, David Cichowski, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, Vikram Bhat, wc993219 Thanks to the fruit in my kitchen. http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner https://rumblevideoarchive.wordpress.com/