Physics

Incarcat la data: 19 Aprilie 2011

Autor: Admin

By Salman Khan - Khan Academy
Course Description:
Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.
Lectures:
Lecture 1 - Introduction to Motion Part 1

Introduction to basic physics of motion. Introduces the concept of variable velocity/acceleration.

 
Lecture 2 - Introduction to Motion Part 2

More on how velocity, distance, acceleration and time relate to each other.

 
Lecture 3 - Introduction to Motion Part 3

Using the basic equations of distance and velocity to solve motion problems.

 
Lecture 4 - Projectile Motion Part 1

Using the equations of motion to figure out things about falling objects.

 
Lecture 5 - Projectile Motion Part 2

A derivation of a new motion equation.

 
Lecture 6 - Projectile Motion Part 3

An example of solving for the final velocity when you know the change in distance, time, initial velocity, and acceleration.

 
Lecture 7 - Projectile Motion Part 4

Solving for time when you are given the change in distance, acceleration, and initial velocity.

 
Lecture 8 - Projectile Motion Part 5

How fast was the ball that you threw upwards?

 
Lecture 9 - Projectile Motion Part 6

More on the ball throwing game.

 
Lecture 10 - Projectile Motion Part 7

How high did the ball go?

 
Lecture 11 - Projectile Motion Part 8

A little leftover from part 7.

 
Lecture 12 - Projectile Motion Part 9

Another example of projectile motion.

 
Lecture 13 - Projectile Motion Part 10

Some more examples with projectile motion.

 
Lecture 14 - 2-Dimensional Projectile Motion Part 1

Using vectors to solve 2 dimensional projectile motion problems.

 
Lecture 15 - 2-Dimensional Projectile Motion Part 2

More on 2 dimensional projectile motion.

 
Lecture 16 - 2-Dimensional Projectile Motion Part 3

Completing our first example from parts 1 and 2.

 
Lecture 17 - 2-Dimensional Projectile Motion Part 4

Another example of a 2-dimensional projectile motion problem.

 
Lecture 18 - 2-Dimensional Projectile Motion Part 5

The second part of the last projectile motion problem.

 
Lecture 19 - Optimal Angle for Projectile Part 1

Optimal Angle for Projectile Part 1.

 
Lecture 20 - Optimal Angle for Projectile Part 2

Optimal angle for a projectile part 2 - Hangtime.

 
Lecture 21 - Optimal Angle for Projectile Part 3

Horizontal distance as a function of angle (and speed).

 
Lecture 22 - Optimal Angle for Projectile Part 4

Optimal Angle for Projectile Part 4.

 
Lecture 23 - Newton's First Law of Motion

Introduction to newton's first law of motion. Inertial frames of reference.

 
Lecture 24 - Newton's Second Law of Motion

An introduction to Newton's Second Law of Motion.

 
Lecture 25 - Newton's Third Law of Motion

Intuition behind Newton's Third Law of Motion.

 
Lecture 26 - Newton's Law Problem Part 1

Examples of exercises using Newton's laws.

 
Lecture 27 - Newton's Law Problem Part 2

A couple of more examples involving Newton's Laws.

 
Lecture 28 - Newton's Laws

A problem involving a braking train.

 
Lecture 29 - Newton's Laws and Vectors

Using vectors to determine the horizontal acceleration when force is applied at an angle.

 
Lecture 30 - Force with Vectors

Another example of using our trigonometry skills to break up a force vector into its x (horizontal) and y (vertical) components.

 
Lecture 31 - Introduction to Tension

An introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them.

 
Lecture 32 - Tension Part 2

A slightly more difficult tension problem.

 
Lecture 33 - Mass on Inclined Plane

Finding the normal and parallel components of the gravitational force vector to determine the acceleration of a block down a frictionless inclined plane. See next video for correction on definition of normal force.

 
Lecture 34 - Introduction to Friction

Correction of definition of "normal force" and an introduction to the coefficient of friction.

 
Lecture 35 - Friction on an Inclined Plane

Calculating the acceleration of on object sliding down an inclined plane with friction.

 
Lecture 36 - Complicated Friction/Inclined Plan

Fun with two masses, some wire, a pulley, and a ramp with friction.

 
Lecture 37 - Tension in an Accelerating System

The second part to the complicated problem. We figure out the tension in the wire connecting the two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a man's face.

 
Lecture 38 - Moving Pulley Problem Part 1

What happens when we pull on a pulley and the pulley is pulling on other things?

 
Lecture 39 - Moving Pulley Problem Part 2

Second part of what happens when we pull on a pulley.

 
Lecture 40 - Introduction to Momentum

What momentum is. A simple problem involving momentum.

 
Lecture 41 - Momentum: Ice Skater Throws a Ball

A simple conservation of momentum problem involving an ice skater and a ball.

 
Lecture 42 - 2-Dimensional Momentum Problem Part 1

An example of conservation of momentum in two dimensions.

 
Lecture 43 - 2-Dimensional Momentum Problem Part 2

We finish the 2-dimensional momentum problem.

 
 
Lecture 45 - Introduction to Work and Energy Part 2

More on work. Introduction to Kinetic and Potential Energies.

 
Lecture 46 - Conservation of Energy

Using the law of conservation of energy to see how potential energy is converted into kinetic energy.

 
Lecture 47 - Work/Energy Problem with Friction

A conservation of energy problem where all of the energy is not conserved.

 
Lecture 48 - Mechanical Advantage Part 1

Introduction to simple machines, mechanical advantage and moments.

 
Lecture 49 - Mechanical Advantage Part 2

More on mechanical advantage, levers and moments.

 
Lecture 50 - Mechanical Advantage Part 3

Introduction to pulleys and wedges.

 
Lecture 51 - Center of Mass

Introduction to the center of mass.

 
Lecture 52 - Introduction to Torque

An introduction to torque.

 
Lecture 53 - Moments Part 1

Introduction to moments.

 
Lecture 54 - Moments Part 2

2 more moment problems.

 
Lecture 55 - Unit Vector Notation Part 1

Expressing a vector as the scaled sum of unit vectors.

 
Lecture 56 - Unit Vector Notation Part 2

More on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method.

 
Lecture 57 - Projectile Motion with Unit Vectors Part 1

Determining the position vector as a function of time.

 
Lecture 58 - Projectile Motion with Unit Vectors Part 2

Let's see if the ball can clear the wall.

 
Lecture 59 - Projectile Motion with Ordered Set Notation

Solving the second part to the projectile motion problem (with wind gust) using ordered set vector notation.

 
Lecture 60 - Centripetal Acceleration Part 1

Intuition behind what it takes to make something travel in a circle.

 
Lecture 61 - Centripetal Acceleration Part 2

More intuition on centripetal acceleration. A simple orbit problem.

 
Lecture 62 - Centripetal Acceleration Part 3

How fast does a car need to go to complete a loop-d-loop.

 
Lecture 63 - Visual Proof: a= v^2/r

Visual proof that centripetal acceleration = v^2/r.

 
Lecture 64 - Calculus Proof that a=v^2/r

Using calculus and vectors to show that centripetal acceleration = v^2/r.

 
Lecture 65 - Introduction to Angular Velocity

Angular velocity or how fast something is spinning.

 
Lecture 66 - Conservation of Angular Momentum

Angular momentum is constant when there is no net torque.

 
 
Lecture 68 - Gravitation

A little bit more on gravity.

 
Lecture 69 - Spring and Hooke's Law

Introduction to Hooke's Law.

 
Lecture 70 - Potential Energy Stored in a Spring

Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring.

 
Lecture 71 - Spring Potential Energy Example (Mistake in Math)

A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!).

 
Lecture 72 - Harmonic Motion Part 1

Intuition behind the motion of a mass on a spring (some calculus near the end).

 

Source: http://academicearth.org/courses/physics

Textul de mai sus reprezinta un extras din "Physics". Pentru versiunea completa a documentului apasa butonul Download si descarca fisierul pe calculatorul tau. Prin descarcarea prezentei lucrari stiintifice, orice utilizator al site-ului www.studentie.ro declara si garanteaza ca este de acord cu utilizarile permise ale acesteia, in conformitate cu prevederile legale ablicabile in domeniul proprietatii intelectuale si in domeniul educatiei din legislatia in vigoare.

In cazul in care intampini probleme la descarcarea fisierului sau documentul nu este nici pe departe ceea ce se doreste a fi te rugam sa ne anunti. Raporteaza o eroare

Important!

Referatele si lucrarile oferite de Studentie.ro au scop educativ si orientativ pentru cercetare academica.

Iti recomandam ca referatele pe care le downloadezi de pe site sa le utilizezi doar ca sursa de inspiratie sau ca resurse educationale pentru conceperea unui referat nou, propriu si original.

Sandale casual dama ECCO Touch Plateau (Negre) Sandale casual dama ECCO Touch Plateau (Negre) Sandalele ECCO Touch Plateau sunt confectionate din piele moale cu detalii metalice(tinte). Sunt...