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  • The Physics Classroom
The Apple, the Moon, and the Inverse Square Law
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Describes the logic behind the development of Newton's law of universal gravitation. Beginning with Johannes Kepler and his three laws of planetary motion, content walks the reader through Newton's thought process and development of this theory. Detailed diagrams and animation of planetary motion are also provided.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Circular Motion Principles for Satellites
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From The Physics Classroom. Uses easy- to-understand language to discuss how circular motion principles apply to the motion of satellites. Describes the tangential velocity and centripetal acceleration of a satellite. Includes many diagrams and a Check Your Understanding section.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
The Doppler Effect and Shock Waves
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This high school physics lesson focuses on the application of the Doppler effect to sound. Discusses what the Doppler effect is, offers examples of its occurrence, and explains what shock waves and sonic boom are.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
The Electromagnetic and Visible Spectra
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A tutorial on the electromagnetic and visible spectra. Discusses dispersion and how perceptions of white and black are related to the visible light spectrum.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Elephant & Feather (Free Fall)
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A demonstration involving an elephant and a feather and explanation of why all objects maintain the same acceleration in the state of free fall without any air resistance.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Free Fall and Air Resistance
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This lesson in high school physics on Newton's Second Law of Motion provides a discussion of free fall and air resistance, and answers, "Why do objects which encounter air resistance ultimately reach a terminal velocity?" and "In situations in which there is air resistance, why do more massive objects fall faster than less massive objects?"

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Inertia and Mass
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This is part of a lesson on Newton's Laws of Motion that focuses on inertia and mass. It restates Newton's first law of motion. The lesson also gives a helpful visual description concerning friction.

Subject:
Mathematics
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Kepler's Three Laws
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Educational Use
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The three laws of planetary motion as described by Kepler are stated and elaborated upon. Useful graphics and an easy-to-understand language are used to explain the nature of planetary motion. Both conceptual and mathematical. Includes a Check Your Understanding section.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Kinematic Equations & Problem-Solving
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This excellent high school physics tutorial from The Physics Classroom investigates motion formulas using several problem-solving strategies including diagrams, equations, and lists.

Subject:
Mathematics
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Light Absorption, Reflection and Transmission
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Educational Use
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This tutorial explains light absorption, reflection and transmission in a clear and concise manner. Provides a "Check Your Understanding" section as well as additional links on color and light.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Mathematics of Satellite Motion
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The mathematics associated with the motion of satellites is described. Equations (for period, velocity, acceleration and force) are stated, symbols described, and sample problems solved. Includes five practice problems with solutions and answers. Excellent graphics.

Subject:
Mathematics
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
The Nature of a Wave
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A very good introduction to the world of waves. Waves and wavelike motion, what is a wave, and categories of waves are the topics examined in this site. Many links to other wave sites.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
Nodes and Antinodes
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In this thorough lesson, nodes and antinodes are explained and compared to crests and troughs. A "Check Your Understanding," set of questions is included at the end of the lesson with answers.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
08/07/2023
The Physics Classroom: Acceleration
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Educational Use
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Topics covered include what acceleration is, the difference between constant and non-constant acceleration, acceleration in a free-falling object, the equation used to compute acceleration, and the difference between positive and negative acceleration. Also includes some practice problems.

Subject:
Science
Material Type:
Lesson
Provider:
The Physics Classroom
Date Added:
12/01/2023
The Physics Classroom: Introduction to Free Fall
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A lesson on free fall covers the fact that free-falling objects do not encounter air resistance and all free-falling objects (on Earth) accelerate downwards at a rate of approximately 10 m/s/s (to be exact, 9.8 m/s/s).

Subject:
Science
Material Type:
Reading
Provider:
The Physics Classroom
Date Added:
12/01/2023