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6. ## Physics of Basketball

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.
7. ## BOOKS: The Ultimate Regents Physics Question and Answer Book - 2016 ed.

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.
8. ## BOOKS: The Ultimate Regents Physics Question and Answer Book - 2016 ed.

I cannot print out papers from the pdf :( It said it needs password for the document

10. ## !!Final exam!! Electric field Gauss'

Hi ertugrultiyek. Sounds like a solid question. What have you tried so far?
11. ## !!Final exam!! Electric field Gauss'

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?
12. ## Game of Thrones and Physics (No Spoilers)

Hey, (SPOILER ALERT) what do you think of projectile motion last sunday episode when the big projectile hit Rhaegal?
13. ## Print Answer Keys?

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.
14. ## Print Answer Keys?

Where can I find the book to download? I already purchased it.
15. ## Which Will Be First? (Rolling Down an Incline)

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.
16. ## Rolling Acceleration Down an Incline

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.
17. ## Rolling Without Slipping Introduction and Demonstrations

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.
18. ## Torque - Mass on Plank with String

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.
19. ## 2 Masses on a Pulley - Conservation of Energy Demonstration

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.
20. ## 2 Masses on a Pulley - Torque Demonstration

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.
21. ## Using Integrals to Derive Rotational Inertia of a Long, Thin Rod with Demonstration

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.
22. ## How the Force of Tension on a Pulley Changes with Acceleration

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.
23. ## AP2 appendix A p 291 question 6 - charging electroscope

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.
24. ## AP2 appendix A p 291 question 6 - charging electroscope

Thanks for the reply, But if I ground the end of the electroscope / metal rod that has an induced positive charge then electrons will flow from the earth to balance that net positive charge. When the negatively charged rod is removed from the electroscope the electroscope will then have a net negative charge - the opposite of what was asked for in the question.
25. ## Graphing the Rotational Inertia of an Irregular Shape

We determine what data to collect to create a graph with rotational inertia as the slope of the best-fit line. #RotationalInertia - Then we collect the data and determine the rotational inertia of an irregular shape. Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:11 The problem 0:46 Free Body Diagram 1:31 Net Torque 3:01 Trial #1 3:52 Angular Acceleration 5:20 12 Trials and Graph 6:29 Deriving Units Next Video: How the Force of Tension on a Pulley Changes with Acceleration Multilingual? Please help translate Flipping Physics videos! Previous Video: Painter on a Scaffold - Don't Fall Off!! Please support me on Patreon! Thank you to Christopher Becke and Faiaz Rahman for being my Quality Control Team for this video.
26. ## AP2 appendix A p 291 question 6 - charging electroscope

Page 78 in the book talks about charging by induction. This section should help you out. It doesn't matter which part of the metal rod is grounded, since it's a conductor.
27. ## AP2 appendix A p 291 question 6 - charging electroscope

I am trying to understand the answer to this question. If a negatively charged rod is brought near the knob at the top of the electroscope then the electrons in the electroscope will be pushed to the end with the leaves (the knob will assume a net positive charge). If the aim is to finish with a positively charged electroscope then a grounding wire / finger would have to be applied near the leaf end of the electroscope to give the excess electrons a path to earth. The given answer does not specify which part of the electroscope is grounded, but since only the knob is accessible, the rest being in the glass bulb, the implication is that the knob is grounded. It seems to me that grounding the knob would cause electrons to flow from earth onto the positively knob and when the ground is broken and the rod removed the result would be a negatively charged electroscope.
28. ## Painter on a Scaffold - Don't Fall Off!!

Example: What is the closest to the end of a 93 g uniform meterstick you can place a 200.0 g object and have the system stay balanced? The meterstick is supported at the 20.0 cm and 80.0 cm marks. Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:03 A scaffold 0:33 The problem 1:28 Free body diagram 2:06 Net torque 3:34 Force Normal demo 4:28 Solving the problem 6:17 Testing our answer Next Video: Graphing the Rotational Inertia of an Irregular Shape Multilingual? Please help translate Flipping Physics videos! Previous Video: Placing the Fulcrum on a Seesaw Please support me on Patreon! Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.
29. ## Placing the Fulcrum on a Seesaw

Example: A 200.0 g mass is placed at the 20.0 cm mark on a uniform 93 g meterstick. A 100.0 g mass is placed at the 90.0 cm mark. Where on the meterstick should the fulcrum be placed to balance the system? Want Lecture Notes? This is an AP Physics 1 Topic. Content Times: 0:01 Seesaw 0:33 The problem 1:28 The fulcrum 2:14 Free body diagram 2:38 Net force 3:35 Net torque 5:49 Combining equations 7:11 Testing our answer 8:11 Alternate solution Next Video: Painter on a Scaffold - Don't Fall Off!! Multilingual? Please help translate Flipping Physics videos! Previous Video: Introductory Rotational Equilibrium Problem Please support me on Patreon! Thank you to Scott Carter, Christopher Becke, and Jonathan Everett for being my Quality Control Team for this video.

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