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  3. The one about the ice skater? Can you be more specific?
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  5. I don't understand the context of the 5th question of the Dynamics- Friction worksheet
  6. Absolutely... want you to be 100% satisfied with your purchase. Refund complete.
  7. This PDF version can't highlight, can't add notes, I really regret bought it and would like to return it. I'd rather buy the Kindle version. Can I return it?
  8. Tails are not required for kites to fly. Tails are one method of stability. It is not necessary to run to launch a kite. There is a book on amazon.com that answers these questions clearly. It's called, "Kite Physics." It gives a visual explanation of the physics of kites in flight. With 125 pictures, illustrations, and 65 experiments. It answers the questions: Are tails required on a kite? How can I improve the flight of my kite? What are the forces that act on my kite? What changes can I try? Do kites glide? What are some applications of kites that I can explore? How do kites fly?
  9. Vertical jump training is essential for athletes as it helps them to perform better in the field. However, some people also try to follow these techniques to improve overall health and fitness.
  10. Correct. When you purchase the book it specifically says it cannot be printed (part of the licensing deal with publishers). However, all of the question sets are available to print individually at https://www.aplusphysics.com/courses/regents/worksheets/ws_index.html.
  11. I cannot print out papers from the pdf :( It said it needs password for the document
  12. Hi ertugrultiyek. Sounds like a solid question. What have you tried so far?
  13. The electric field just above the surface of the conductor charged plate in a machine has a magnitude of 3x10^5 N/C a) Derive an equation to find electric field on the surface of a big conductor plate. b) What is the surface charge density (in C/m^2) on the above mentioned plate, assuming that is a conductor?
  14. Hey, (SPOILER ALERT) what do you think of projectile motion last sunday episode when the big projectile hit Rhaegal?
  15. Hi Myua, It's in the download section -- the previous "buy" button turns to a "download" button after you complete the purchase. To save you the trouble, however, I also e-mailed you the file.
  16. Where can I find the book to download? I already purchased it.
  17. A hollow sphere, solid sphere, and thin hoop are simultaneously released from rest at the top of an #incline. Which will reach the bottom first? Assume all objects are of uniform density. #RollingWithoutSlipping Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:12 The problem 0:46 #ConservationOfEnergy 2:22 General solution 3:55 The order of the objects 5:20 The demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: Rolling Acceleration Down an Incline Please support me on Patreon! Thank you to Christopher Becke and Jonathan Everett for being my Quality Control Team for this video.
  18. Example: Determine the #Acceleration of a uniform, solid cylinder #RollingWithoutSlipping down an #Incline with incline angle θ. The rotational inertia of a uniform, solid cylinder about its long cylindrical axis is ½MR^2. Assume the cylinder starts from rest. Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:07 The problem 0:43 #ConservationOfEnergy 2:32 Rolling without Slipping 3:32 Displacement and height 5:12 Understanding our solution 6:16 Demonstrating our answer Next Video: Which Will Be First? (Rolling Down an Incline) Multilingual? Please help translate Flipping Physics videos! Previous Video: Rolling Without Slipping Introduction and Demonstrations Please support me on Patreon! Thank you to Christopher Becke and Jonathan Everett for being my Quality Control Team for this video.
  19. Rolling without Slipping is demonstrated and the equation for velocity of the center of mass is derived. A cycloid is demonstrated. Kinetic energy, distance, and acceleration of rolling without slipping is discussed. Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:06 #RollingWithoutSlipping 0:28 #Cycloid 1:15 Translation and Rotational 3:13 Center of Mass Velocity 4:10 Resultant Velocity 4:37 Kinetic Energy 4:58 Distance and Acceleration Next Video: Rolling Acceleration Down an Incline Multilingual? Please help translate Flipping Physics videos! Previous Video: Torque - Mass on Plank with String Please support me on Patreon! Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.
  20. Example: A 0.300 kg mass rests on a 0.395 m long, 0.764 kg, uniform wooden plank supported by a string as shown in the figure. If the mass is 0.274 m from the wall and the angle between the string and the plank is 32.1°, (a) What is the force of tension in the string? and (b) What is the normal force from the wall? Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:07 The problem 1:17 The free body diagram 3:45 Net torque 5:41 Substituting in numbers 6:53 Net force 8:02 The demonstration Next Video: Rolling Without Slipping Introduction and Demonstrations Multilingual? Please help translate Flipping Physics videos! Previous Video: 2 Masses on a Pulley - Conservation of Energy Demonstration Please support me on Patreon! Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.
  21. Example: Mass 1 and mass 2 hang from either side of a frictionless #pulley with #rotationalInertia, I, and radius, R. What is the angular acceleration of the pulley? Use #ConservationOfEnergy Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:07 The problem 1:01 Conservation of Energy 2:29 The mechanical energies 4:07 Solving the problem 5:57 Using arc length Next Video: Torque - Mass on Plank with String Multilingual? Please help translate Flipping Physics videos! Previous Video: 2 Masses on a Pulley - Torque Demonstration Please support me on Patreon! Thank you to Christopher Becke and Faiaz Rahman for being my Quality Control Team for this video.
  22. Example: 0.100 kg and 0.200 kg masses hang from either side of a frictionless #Pulley with a rotational inertia of 0.0137 kg·m^2 and radius of 0.0385 m. (a) What is the #AngularAcceleration of the pulley? (b) What is the #TensionForce in each string? Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:08 The problem 1:29 The free body diagrams 2:51 Net torque on the pulley 4:28 Net forces on both masses 6:49 Tangentail acceleration 7:31 Solving for acceleration 8:55 Measuring acceleration 10:16 Solving for Tension 12:29 2 incorrect solutions Next Video: 2 Masses on a Pulley - Conservation of Energy Demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: Using Integrals to Derive Rotational Inertia of a Long, Thin Rod with Demonstration Please support me on Patreon! Thank you to Christopher Becke and Faiaz Rahman for being my Quality Control Team for this video.
  23. We use integrals to derive the #rotationalinertia of a uniform, long, thin rod. And we demonstrate our answer is correct using a Rotational Inertia Demonstrator. Want Lecture Notes? This is an AP Physics 😄 Mechanics Topic. Content Times: 0:15 Rotational Inertia 0:42 Linear Mass Density 1:51 About Center of Mass 3:02 About an End 4:27 Rotational Inertia Demonstrator (RID) 6:09 About Center of RID 7:03 Comparing our answers 7:43 Demonstrating our answer Next Video: 2 Masses on a Pulley - Torque Demonstration Multilingual? Please help translate Flipping Physics videos! Graphing the Rotational Inertia of an Irregular Shape Previous Video: How the Force of Tension on a Pulley Changes with Acceleration Please support me on Patreon! Thank you to Christopher Becke and Faiaz Rahman for being my Quality Control Team for this video.
  24. We predict and measure the force of tension acting on a pulley while the system is at rest and accelerating. #PulleyTensionForce Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:20 The data 0:45 Review 1:15 Tension while at rest 2:45 Accelerating tension Next Video: Using Integrals to Derive Rotational Inertia of a Long, Thin Rod with Demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: Graphing the Rotational Inertia of an Irregular Shape Please support me on Patreon! Thank you to Christopher Becke and Faiaz Rahman for being my Quality Control Team for this video.
  25. Connecting to ground provides an infinite supply of electrons (or can be an infinite sink of electrons). If you ground a metal rod, and hold a negative rod near an end, negative charges will be repelled from the rod into the ground. If you then disconnect the rod from the ground, no charges can enter or leave the rod, so you're left with a net positive charge on the rod.
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