Simple Harmonic Motion - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Angular Momentum - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
60
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Rotation and Torque - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Elastic and Inelastic Collisions - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
66
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Conservation of Momentum - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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The Most EXPLOSIVE Holiday Gift Ever; Making A Volcano From Wrapping Paper l The Great Gift Exchange
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/
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Power - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Conservation of Energy - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
59
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Work and Energy - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Gravity and Orbital Mechanics - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Circular Motion - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
132
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Friction - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Free Body Diagrams - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
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Why RED BUBBLES are impossible... or are they?!
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/
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Newton's Laws of Motion - Physics 101 / AP Physics 1 Review - Dianna Cowern
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/
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2D Motion - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
46
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Trig Review for Physics - Common Math Tools - Physics 101, AP Physics 1 Review with Physics Girl
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/
35
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I WAS THERE! How David Blaine flew helium balloons to the height of jets (and jumped)
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/
56
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Freefall - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
17
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Fact-Checking this Viral Bottle Trick
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/
11
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Dianna's Intro Physics Class: Trailer - Physics 101, AP Physics 1 Review with Physics Girl
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/
57
views
1D Motion & Kinematics - Physics 101 / AP Physics 1 Review with Dianna Cowern
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/
8
views
Are planes safe during COVID?
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/
23
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Insanely Fun DIY Science Experiments at Home with Physics Girl
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/
7
views
Unique at-home Science Experiments! with Physics Girl
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/
9
views