Unit : Momentum And Collisions
We use the term momentum in various ways in everyday language. We speak of sports teams gaining and maintaining the momentum to win. Generally, momentum implies a tendency to continue on course – to move in the same direction – and is associated with mass and velocity. Momentum has its most important application in analyzing collision problems, and, like energy, is important because it is conserved. Only a few physical quantities are conserved in nature, and studying them yields fundamental insight into how nature works, as we shall see in our study of momentum.
Completing this unit should take you approximately 12 hours.
Calculators Wont Solve Your Problems
Its true that calculators can help you crunch numbers, but its important to understand why youre punching in those numbers. If you just use your calculator to punch numbers without understanding what the formula is actually about, youll never completely understand what youre studying. For instance, theres a formula for understanding how fast an object will fall. However, its important to understand how that formula is applied and what it explains.
Always Account For Small Details
Every physics problem is a model of real-world situations, and they simplify the way things work to make the situation easier to understand. However, this means that the forces that can change the answer to the problem, such as drag and friction, will be deliberately left out.
The tutor will, in most cases, leave out the details to test your understanding. This comes to build on the fact that you need to memorise small details that will ensure you get the most accurate answer.
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How To Ace Physics Class
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It’s the start of a new school year for many students, and everyone, including the faculty, needs to get ready for some tough classesespecially while dealing with Covid-19. Although I’ve only been through one pandemic, I’ve been teaching physics for over 20 years, so I am going to give you my best strategies to help college students do as well as possible this year. These tips are focused on science courses, but many should be useful for other classes too.
Let’s get started.
The first things you need to consider are: Why are you in this class, and what do you want to get out of it? Sure, it’s very possible that this course is required. Or maybe you always wanted to learn about, say, quantum mechanics, so you enrolled out of curiosity and not practicality. But no matter why you are here, you need a goal. Are you trying to learn something, or are you trying to get a particular grade for your academic transcript?
Suppose you are on a football team. During practice, you start doing push-ups, because that’s what the coach told you to do. But are you actually going to do push-ups during the game? I certainly hope not. You wont win that way. But the push-ups will help you indirectly, because they will make you stronger.
In the end, you might even make some friends. That’s not such a bad thing, is it?
How To Do Well In Physics
This article was co-authored by Sean Alexander, MS. Sean Alexander is an Academic Tutor specializing in teaching mathematics and physics. Sean is the Owner of Alexander Tutoring, an academic tutoring business that provides personalized studying sessions focused on mathematics and physics. With over 15 years of experience, Sean has worked as a physics and math instructor and tutor for Stanford University, San Francisco State University, and Stanbridge Academy. He holds a BS in Physics from the University of California, Santa Barbara and an MS in Theoretical Physics from San Francisco State University.wikiHow marks an article as reader-approved once it receives enough positive feedback. This article received 72 testimonials and 94% of readers who voted found it helpful, earning it our reader-approved status. This article has been viewed 550,063 times.
For some lucky individuals, being good at physics comes naturally. For the rest of us, however, getting a good grade in physics requires a significant amount of hard work. Luckily, by learning important foundational skills and practicing often, almost anyone can master their physics material. However, even more important than getting a good grade is the fact that a better understanding of physics may shed light on some of the seemingly mysterious forces that govern the way the world works.
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Allow For Plenty Of Time For Revision
If you are getting low grades for mock and practice exams, then it could be that you are not allowing for enough time for revision. While practice exams do not have as much weight in your overall score as actual exams, they will help you know your weak areas.
However, you need to revise everything you have been taught. Do not be like most students who do last-minute revising, and tend to miss something. Proper revision starts the time you review your notes after class.
The best revision hack to improve your physics grade is to revise periodically without allowing for a backlog in the notes and topics that you have not covered. In addition, ensure to ask our physics tutor for the best revision techniques to improve your physics grade.
Physics And Other Disciplines
Physics is the foundation of many important disciplines and contributes directly to others. Chemistry deals with the interactions of atoms and molecules, so it is rooted in atomic and molecular physics. Most branches of engineering are applied physics. In architecture, physics is at the heart of structural stability and is involved in acoustics, heating, lighting, and the cooling of buildings. Parts of geology rely heavily on physics, such as the radioactive dating of rocks, earthquake analysis, and heat transfer in the Earth. Some disciplines, such as biophysics and geophysics, are hybrids of physics and other disciplines.
Physics in Chemistry: The study of matter and electricity in physics is fundamental towards the understanding of concepts in chemistry, such as the covalent bond.
Physics has many applications in the biological sciences. On the microscopic level, it helps describe the properties of cell walls and cell membranes. On the macroscopic level, it can explain the heat, work, and power associated with the human body. Physics is involved in medical diagnostics, such as X-rays, magnetic resonance imaging , and ultrasonic blood flow measurements. Medical therapy sometimes directly involves physics: cancer radiotherapy uses ionizing radiation, for instance. Physics can also explain sensory phenomena, such as how musical instruments make sound, how the eye detects color, and how lasers can transmit information.
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Physics In Everyday Life: Examples For The Classroom
Physics, or the study of matter, energy, and the interactions between them, helps us to understand the laws and rules that govern the physical world. Not every student will grow up and study physics on a deeper level, but everyone uses basic physics concepts to navigate everyday life. Here are 5 examples to illustrate to students how they are making use of physics concepts every day.
Break Unproductive And Counter
Students come to a physics course with many habits that aren’t helpful. Some of these arise from everyday modes of thinking about their experience with physics some come from habits reinforced by high school physics courses. Here’s a few examples:
So how can a student achieve understanding?
These are techniques used by successful students.
So how can a student know when understanding has been achieved?
- If you can do an end-of-chapter problem in about ten minutes after studying the chapter, but without looking up anything in the textbook and without too many false starts.
- If your notes and summaries are good enough and clear enough that they are sufficient to prepare for the exam, again without looking at the textbook.
- If you can quickly spot and correct errors, blunders or deficiencies in your own work, in the class lectures, and even in the textbook.
- If you can prepare for an exam in a couple of hours of review and feel confident that you are ready for anything that might be on the exam.
- If you are familiar enough with the material that the important and necessary things stick in your mind without conscious effort to memorize or cram.
Other resources with advice on how to study effectively.
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Make Learning Physics Fun
One of the reasons you are underperforming is because you have lost the motivation to concentrate and learn. This lack of motivation is attributed to the pressure of exams and doing well at the subject, which sucks out the fun in learning.
Consider your favourite subject where you perform well. You will realise there are things you do that make it interesting to learn it. Ensure to evaluate your learning techniques and working on gamifying your physics study process.
Everyday Physics Examples To Explore:
These five examples are a great way to get students brainstorming ways that they are using physics everyday.
Heat is energy that transfers from a warmer substance to a colder one. When you use a stove, the coil, flame, or cooktop transfers heat energy to the pot or pan that is set on top of it. Then, the heat from the pot or pan is transferred to the food inside.
Other fun examples of the use of heat:
- Roasting melty smores over a fire
- Ironing flat the wrinkles out of a shirt
- Wet clothes are dried with the hot air of the dryer
Small speakers in your headphones use electricity and moving magnets to create sound waves. The sound waves that come from the speaker bounce off your eardrums, which your brain interprets as music. Sound waves that you hear, whether they come from another person or a speaker, bounce off objects and move through the air and into your ears. Your brain uses the waves to interpret where a sound is coming from and how loud it is.
Other fun examples of sound:
- A dog barking in the distance
- A creaking door on the other side of the room
- Tapping a pen on your desk
Gravity Ballpoint Pen
Other fun examples of gravity:
- You can jump over a puddle but gravity pulls you back down
- Lake water is held in the right place by gravitys pull
- Football players punt the ball and gravity pulls it down for the other team to catch
Inertia Seat Belt
Other fun examples of inertia:
More fun examples of electricity:
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Ap Physics C: Mechanics And Ap Physics C: Electricity And Magnetism
Both AP Physics C courses are calculus-based, meaning you should have already taken calculus or concurrently be taking calculus while you take either AP Physics C course. This is the main factor that makes Physics C more challenging than Physics 1 and Physics 2.
Additionally, AP Physics C requires that students are enrolled or have already taken calculus.
But what’s the difference between AP Physics C: Mechanics and AP Physics C: Electricity and Magnetism?
Mechanics covers kinematics, Newton’s laws of motion, work, energy, power, linear momentum, circular motion and rotation, oscillations and gravitation. As you can see, these are many of the same concepts explored in Physics 1. However, this course goes into more depth than Physics 1 and uses calculus, making it much more challenging.
Electricity and Magnetism covers electrostatics, conductors, capacitors, dielectrics, electric circuits, magnetic fields, and electromagnetism. Notice there is some overlap with the Physics 2 curriculum, though again, Physics C will be more difficult since it incorporates calculus.
The two topics are sometimes taught as the same course even though there are two different exams, with each topic being taught over one semester. When taught as a single class, Mechanics is usually taught first, and Electricity and Magnetism comes second.
If schools only teach one topic, it tends to be Mechanics, since it builds on material most commonly taught in beginning physics classes .
Can You Take Physics In 9th Grade
In schools with this curriculum, nearly all 9th grade students take a Physical Science, or Introduction to Physics Concepts course. After this, students are then encouraged to take an 11th or 12th grade course in physics, which does use more advanced math, including vectors, geometry, and more involved algebra.
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Unit : Work And Energy
Energy is the capacity of a physical system to perform work. It plays an essential role both in everyday events and in scientific phenomena. You can probably name many forms of energy from that provided by our foods to the energy we use to run our cars to the sunlight that warms us on the beach. Not only does energy have many interesting forms, but it is involved in almost all phenomena and is one of the most important concepts of physics.
Energy can change forms, but it cannot appear from nothing or disappear without a trace. Thus, energy is one of a handful of physical quantities that we say is conserved.
Completing this unit should take you approximately 14 hours.
Videos Practice Problems And Extra Help If You Have Questions
In this course:
- Physics Lab videos that explain physics in a way that’s easy to understand
- Videos from other sources that do the best job of covering each topic
- Online practice problems for each topic to test your ability to solve problems
- Study Guide and Equation Sheet to download and use when you’re doing homework or studying for a test
- 1-on-1 help with concepts, physics problems or any other questions you have
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Definition Of Terms: Model Theory Law
In colloquial usage, the terms model, theory, and law are often used interchangeably or have different interpretations than they do in the sciences. In relation to the study of physics, however, each term has its own specific meaning.
The laws of nature are concise descriptions of the universe around us. They are not explanations, but human statements of the underlying rules that all natural processes follow. They are intrinsic to the universe humans did not create them and we cannot change them. We can only discover and understand them. The cornerstone of discovering natural laws is observation science must describe the universe as it is, not as we may imagine it to be. Laws can never be known with absolute certainty, because it is impossible to perform experiments to establish and confirm a law in every possible scenario without exception. Physicists operate under the assumption that all scientific laws and theories are valid until a counterexample is observed. If a good-quality, verifiable experiment contradicts a well-established law, then the law must be modified or overthrown completely.
Learn How To Basic Equations Came About
After you have memorised the simple equations used in physics, the next thing you need to do is to understand why and how they work. This will call for you to understand how each of the basic equations in physics is derived.
This will give you a clear understanding of the relationship between the equations, and in time you will learn how to solve each problem in O level physics and beyond. Learning how to derive the equations will put you in a position to use them more effectively.
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Work On Improving Your Math Skills
As we have previously mentioned, physics incorporates many mathematical elements. One of the ways to improve your O level physics grade is to improve your ability to tackle mathematical formulas and problems.
The best way to do this is to study mathematics alongside physics. This is an easy way of managing the formulas and problems in the subject. However, this can sometimes be easier said than done as you advance in studying the subject.
The best way to navigate around this problem is to join a study group or hire a tutor. This way, you will have someone to guide you on how and what to study. Here are a few math topics to help you solve physics problems:
- Algebra for basic equations
- Trigonometry for rotation problems, force diagrams, and angled systems
- Geometry for problems dealing with volume, area, et al.
Since mathematics is the language of physics, you need to brush up on your math solving skills. As we said earlier, the best way to do this is to start with the basics and get physics help whenever you feel stuck.
What Skills Do I Need To Study Physics
- M.S., Mathematics Education, Indiana University
- B.A., Physics, Wabash College
As with any field of study, it is helpful to begin learning the basics early if you want to master them. For someone who has decided that they want to study physics, there may be areas that they avoided in earlier education which they will realize they need to become familiar with. The most essential things for a physicist to know are outlined below.
Physics is a discipline and, as such, it’s a matter of training your mind to be prepared for the challenges it will present. Here is some mental training that students will need to successfully study physics, or any science — and most of them are good skills to have regardless of what field you’re going into.
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Physics I: What To Expect
Here is some additional, more informal info about the class thatshould give you a better idea what to expect from this class, how toenjoy it and do well, and help you decide whether or not this class isfor you.
- This class is fairly big. You and I will need to work togethercreatively to make sure that this classtime is comfortable andeffective, and that outside of class people are able to get all thehelp they need. Last time I taught this class there were 26 studentsin it and it worked well.