International Young Physicists' Tournament : collection of works for IYPT problems (25th-26th) / editors, Sihui Wang, Wenli Gao.

Format:

Book

Contributor:

Wang, Sihui, 1964- editor.

Gao, Wenli, 1968- editor.

Language:

English

Subjects (All):

International Young Physicists' Tournament--(25th : 2012 : Bad Saulgau, Germany).

International Young Physicists' Tournament.

International Young Physicists' Tournament--(26th : 2013 : Taipei, Taiwan).

Mathematics--Problems, exercises, etc.

Mathematics.

Physical Description:

1 online resource (267 p.)

Place of Publication:

Singapore : World Scientific, 2015.

Language Note:

English

Summary:

Solutions to the 25th & 26th International Young Physicists' Tournament provides original, quantitative solutions in fulfilling seemingly impossible tasks. The book expands on the solutions required by the problems. Many of the articles include modification, extension to existing models in references, or derivation and computation based on fundamental physics, and are not confined to the models and methods in present literatures. The International Young Physicists' Tournament (IYPT) is one of the most prestigious international physics contests among high school students. This book is based on

Contents:

Contents; 1. 2012 Problem 1: Gaussian Cannon; 1. Introduction; 1.1. Preliminary Analysis; 2. Experimental Setup; 3. Experiment Results; 3.1. Magnet Fixed/Not Fixed; 3.2. Influence of the Magnet's Position; 3.3. Influence of Different Number of Balls; 3.4. Magnetic Force Measurement; 4. Qualitative Explanation; 5. Quantitative Model; 5.1. Calculating the Ejected Ball's Speed; 5.1.1. General Idea; 5.1.2. "Touching Ball" Collision Model; 5.1.3. Calculation Results; 6. Conclusion; References; 2. 2012 Problem 3: String of Beads; 1. Introduction; 2. Dynamics of the String

2.1. Theoretical Derivation2.2. Numerical Solution; 3. Experiment Verification; 3.1. Experiment Design; 3.2. Comparison; 4. Vibration; 5. Conclusion; 3. 2012 Problem 5: Bright Waves; 1. Introduction; 1.1. Preliminary Experiments and Analysis; 1.1.1. Experimental Setup; 1.2. Background and Our Approach; 2. Theoretical Analysis; 2.1. Light Ray Tracing; 2.1.1. 2D Case; 2.1.2. 3D Case; 2.2. Formation of the Pattern; 3. Features of the Pattern: Predictions and Experimental Verifications; 3.1. Shape of Waves Dominates the Pattern; 3.1.1. Curtate Cycloid Wave; 3.1.2. Superposition of Two Waves

3.2. Influence of Depth on the Pattern3.3. Influence of Incident Direction on the Pattern; 3.4. Discussions on the Results; 4. Conclusion; References; 4. 2012 Problem 6: Woodpecker Toy; 1. Introduction; 1.1. Preliminary Analysis; 1.2. Background and Our Approach; 2. Dynamic Model of Woodpecker Toy; 2.1. Equations of Motion; 2.1.1. Oscillation; 2.1.2. Oscillation with Sliding; 2.1.3. Pure Sliding; 2.2. Additional Conditions; 2.2.1. Sliding Occurs; 2.2.2. Detachment of Sleeve from the Pole; 2.2.3. Collision; 2.3. Numerical Calculation; 3. Comparison with Experiments

3.1. Measuring Relevant Parameters3.1.1. Moment of Inertia J; 3.1.2. Angular Stiffness k; 3.1.3. Friction Coefficient Between Sleeve and Pole; 3.1.4. Geometric Parameters of Sleeve and Pole; 3.2. Measuring the Period of Motion; 3.3. Results of Simulation and Discussions; 4. Conclusion; References; 5. 2012 Problem 8: Bubbles; 1. Introduction; 2. Assumption of Equivalent Density; 2.1. Buoyancy with "Static Bubbles" Present; 2.2. Buoyancy with Rising Bubbles; 3. Equivalent Density-Experimental Verification; 3.1. Floating Objects with the Presence of Bubbles; 3.2. Pressure Measurement

4. Motion After Sinking5. Summary; References; 6. 2012 Problem 10: Rocking Bottle; 1. Introduction; 2. Experiments; 3. Theoretical Analysis; 3.1. Theory for the First Stage; 3.2. Analysis for the Rocking Stage; 3.2.1. Influence of the Mass Center Shift; 3.2.2. Influence of the Adhered Liquid; 3.3. An Interesting Discovery; 4. Conclusion; References; 7. 2012 Problem 13: Misty Glass; 1. Introduction; 2. Preliminary Experiment; 3. Theoretical Analysis; 3.1. Formation of Colorful Rings; 3.2. Angular Width of the Rings; 4. Experiment Verification; 4.1. The Necessity of Convex Lens

4.2. Angular Width

Notes:

Description based upon print version of record.

Includes bibliographical references at the end of each chapters and indexes.

Description based on print version record.

ISBN:

981-4630-84-5