About This Chapter
AP Physics 2: Conservation Principles - Chapter Summary
These engaging lessons cover conservation principles in physics, including the first law of thermodynamics and the definitions of power and work as they're explained in physics. Professional instructors have created these informative lessons, so you can feel confident that you're learning all you need to know about these topics. If you need to go back and review just one part of a video lesson, or skip ahead to a section you want to review, use the video tabs feature found in the Timeline. As you move through the lessons, feel free to contact an instructor if you need help. This chapter is designed to help you do the following:
- Read changes in heat and energy diagrams
- Measure the internal energy of a system
- Use the object model to calculate the expected behavior of a system
- Calculate changes in the potential and kinetic energy of a system
- Understand the application of the work-energy theorem
- Describe work done by a variable force
- Give an example of a pressure-volume diagram
- Name the mechanisms of heat transfer
- Plot volume and pressure as they're found in the thermodynamic process
- Define the atomic spectrum
- Explain the spectra associated with nuclear or electronic transitions
- Apply the conservation of energy and mass to a natural phenomenon
1. Internal Energy of a System: Definition & Measurement
We often talk about individual types of energy, but how do you measure total energy? One way is to find the internal energy of a system. Let's learn what it means and how it is measured.
2. Calculating Changes in Kinetic & Potential Energy of a System
A system of interacting objects can have both kinetic and potential energy. As potential energy changes, this can change the kinetic energy of the system, too. In this lesson, learn about these important types of energy and how they can change.
3. Work: Definition, Characteristics, and Examples
Pushing a wall all day may feel like work, but unless you get that wall moving you're not doing any work according to the rules of physics. In this video lesson, you'll learn how work is defined as well as how to calculate the amount of work done on an object.
4. Power: Definition and Mathematics
Work involves moving an object with a force, but power tells us how quickly that work is done. In this lesson, you will learn about how power depends on both work and time as well as see examples of how to calculate power.
5. Work-Energy Theorem: Definition and Application
Work and energy are closely related in physics. In this lesson, you'll learn what that relationship is as well as how we can apply it to various situations.
6. Work Done by a Variable Force
Doing work on an object is a simple concept: we apply a certain force over a certain distance. But in real life, that force is rarely constant. Therefore, we need to understand variable forces and be able to calculate them accurately.
7. Pressure-Volume Diagram: Definition & Example
Pressure and volume are two variables that relate to a parcel of gas. This lesson explores how work done on a parcel of gas in a cylinder changes its pressure and volume.
8. Mechanisms of Heat Transfer: Conduction, Convection & Radiation
There are three main ways that heat is transferred between substances or objects. In this video lesson you'll learn about each one, and identify the differences between them.
9. First Law of Thermodynamics: Law of Conservation of Energy
This video describes the first law of thermodynamics. Several examples of the application of this law are discussed. The significance of the law and its practical application are discussed as well.
10. Changes in Heat and Energy Diagrams
Did you know that temperature and heat are not the same thing? Did you know that the temperature of water doesn't change when it boils? This lesson describes the relationship between heat and temperature. Diagrams are used to illustrate the relationship between heat and temperature during phase changes.
11. Plotting Pressure vs. Volume for a Thermodynamic Process
Pressure and volume are measured in order to determine work done in some systems. In this lesson we will learn how to plot pressure and volume and what we can calculate from the plot.
12. Atomic Spectrum: Definition, Absorption & Emission
In this lesson, we'll discuss the meaning of the term 'atomic spectrum' and distinguish between the two main types of atomic spectra: absorption and emission spectra. We'll also describe how each forms.
13. Applying Conservation of Mass & Energy to a Natural Phenomenon
Einstein derived an equation that relates mass to energy. In this lesson, we will investigate what this equation means and we will go through a few examples using it.
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Other chapters within the AP Physics 2: Exam Prep course
- AP Physics 2: Properties & Structure of Systems
- AP Physics 2: Electric Charge
- AP Physics 2: Mass & Energy
- AP Physics 2: Properties of Objects, Space & Time
- AP Physics 2: Properties of Matter
- AP Physics 2: Vector & Scalar Fields
- AP Physics 2: Electric Fields
- AP Physics 2: Magnetic Fields
- AP Physics 2: Isolines
- AP Physics 2: Forces
- AP Physics 2: Force Labs
- AP Physics 2: Energy of a System
- AP Physics 2: Electric & Magnetic Properties of a System
- AP Physics 2: Conservation in Electrical Circuits
- AP Physics 2: Conservation in Fluid Flow
- AP Physics 2: Conservation of Electric Charge
- AP Physics 2: Conservation of Linear Momentum
- AP Physics 2: Conservation of Nucleon Number
- AP Physics 2: Waves
- AP Physics 2: Reflection & Refraction
- AP Physics 2: Electromagnetic Radiation
- AP Physics 2: Wave Models
- AP Physics 2: Ideal Gas
- AP Physics 2: Thermal Equilibrium & Entropy
- AP Physics 2: Probability in Physics
- AP Physics 2 Flashcards