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Khan Academy
Physics
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1
Introduction to Vectors and Scalars
by Khan Academy
684,069 views
Learn more: http://www.khanacademy.org/video?v=ihNZlp7iUHE
Distance, displacement, speed and velocity. Difference between vectors and scalars -
2
Calculating Average Velocity or Speed
by Khan Academy
418,128 views
Learn more: http://www.khanacademy.org/video?v=oRKxmXwLvUU
Example of calculating speed and velocity -
3
Solving for Time
by Khan Academy
233,408 views
Learn more: http://www.khanacademy.org/video?v=awzOvyMKeMA
Simple example of solving for time given distance and rate -
4
Displacement from Time and Velocity Example
by Khan Academy
204,843 views
Learn more: http://www.khanacademy.org/video?v=lQ-dvt3V4yQ
Worked example of calculating displacement from time and velocity -
5
Acceleration
by Khan Academy
272,370 views
Learn more: http://www.khanacademy.org/video?v=FOkQszg1-j8
Calculating the acceleration of a Porshe -
6
Newton's First Law of Motion
by Khan Academy
308,728 views
Learn more: http://www.khanacademy.org/video?v=CQYELiTtUs8
Newton's First Law (Galileo's Law of Inertia). -
7
Newton's Second Law of Motion
by Khan Academy
248,868 views
Learn more: http://www.khanacademy.org/video?v=ou9YMWlJgkE
Newton's Second Law of Motion: F=ma -
8
Newton's Third Law of Motion
by Khan Academy
193,709 views
Learn more: http://www.khanacademy.org/video?v=By-ggTfeuJU
Every action has an equal and opposite reaction -
9
Airbus A380 Take-off Time
by Khan Academy
142,324 views
Learn more: http://www.khanacademy.org/video?v=p4DTormtEG0
Figuring how long it takes an a380 to take off given a constant acceleration -
10
Airbus A380 Take-off Distance
by Khan Academy
95,748 views
Learn more: http://www.khanacademy.org/video?v=fQt69_Q2CTw
How long of a runway does as a380 need -
11
Why Distance is Area under Velocity-Time Line
by Khan Academy
127,631 views
Learn more: http://www.khanacademy.org/video?v=d-_eqgj5-K8
Understanding why distance is area under velocity-time line -
12
Average Velocity for Constant Acceleration
by Khan Academy
158,664 views
Learn more: http://www.khanacademy.org/video?v=MAS6mBRZZXA
Calculating average velocity when acceleration is constant -
13
Acceleration of Aircraft Carrier Takeoff
by Khan Academy
81,752 views
Learn more: http://www.khanacademy.org/video?v=VYgSXBjEA8I
Using what we know about takeoff velocity and runway length to determine acceleration -
14
Race Cars with Constant Speed Around Curve
by Khan Academy
73,624 views
Learn more: http://www.khanacademy.org/video?v=ITA1rW5UraU
When acceleration could involve a change in direction and not speed -
15
Introduction to Gravity
by Khan Academy
150,801 views
Learn more: http://www.khanacademy.org/video?v=Xcel427Ezl0
Basics of gravity and the Law of Universal Gravitation -
16
Mass and Weight Clarification
by Khan Academy
87,543 views
Learn more: http://www.khanacademy.org/video?v=IuBoeDihLUc
Difference between mass and weight -
17
Gravity for Astronauts in Orbit
by Khan Academy
74,020 views
Learn more: http://www.khanacademy.org/video?v=oIZV-ixRTcY
Why do astronauts appear weightless despite being near the Earth? -
18
Would a Brick or Feather Fall Faster
by Khan Academy
75,075 views
Learn more: http://www.khanacademy.org/video?v=36Rym2q4H94
What would fall faster on the moon? -
19
Deriving Displacement as a Function of Time, Acceleration and Initial Velocity
by Khan Academy
98,207 views
Learn more: http://www.khanacademy.org/video?v=wlB0x9W-qBU
Deriving displacement as a function of time, constant acceleration and initial velocity -
20
Plotting Projectile Displacement, Acceleration, and Velocity
by Khan Academy
90,197 views
Learn more: http://www.khanacademy.org/video?v=T0zpF_j7Mvo
Plotting projectile displacement, acceleration, and velocity as a function to change in time -
21
Projectile Height Given Time
by Khan Academy
72,531 views
Learn more: http://www.khanacademy.org/video?v=IYS4Bd9F3LA
Figuring out how high a ball gets given how long it spends in the air -
22
Deriving Max Projectile Displacement Given Time
by Khan Academy
45,563 views
Learn more: http://www.khanacademy.org/video?v=P7LKEkcNibo
Deriving a formula for maximum projectile displacement as a function of elapsed time -
23
Impact Velocity From Given Height
by Khan Academy
53,569 views
Learn more: http://www.khanacademy.org/video?v=2ZgBJxT9pbU
Determining how fast something will be traveling upon impact when it is released from a given height -
24
Visualizing Vectors in 2 Dimensions
by Khan Academy
123,344 views
Learn more: http://www.khanacademy.org/video?v=xp6ibuI8UuQ
Visualizing, adding and breaking down vectors in 2 dimensions -
25
Projectile at an Angle
by Khan Academy
131,093 views
Learn more: http://www.khanacademy.org/video?v=ZZ39o1rAZWY
Figuring out the horizontal displacement for a projectile launched at an angle -
26
Different Way to Determine Time in Air
by Khan Academy
62,431 views
Learn more: http://www.khanacademy.org/video?v=_NWc3C3cTNA
Another way to determine time in the air given an initial vertical velocity -
27
Launching and Landing on Different Elevations
by Khan Academy
60,163 views
Learn more: http://www.khanacademy.org/video?v=a5QnXi_lZII
More complicated example involving launching and landing at different elevations -
28
Total Displacement for Projectile
by Khan Academy
51,237 views
Learn more: http://www.khanacademy.org/video?v=UXORCpvKYiI
Reconstructing the total displacement vector for a projectile -
29
Total Final Velocity for Projectile
by Khan Academy
40,792 views
Learn more: http://www.khanacademy.org/video?v=sTp4cI9VyCU
Calculating the total final velocity for a projectile landing at a different altitude (mistake near end: I write 29.03 when it should be 26.03 m/s and the final total magnitude should be 26.55 m/s 78.7 degrees below horizontal -
30
Correction to Total Final Velocity for Projectile
by Khan Academy
21,981 views
Learn more: http://www.khanacademy.org/video?v=DNoDJlB0ygU
Correction to "Total Final Velocity for Projectile" Video -
31
Projectile on an Incline
by Khan Academy
42,476 views
Learn more: http://www.khanacademy.org/video?v=jNESnky3RVg
Challenging problem of a projectile on an inclined plane -
32
Unit Vectors and Engineering Notation
by Khan Academy
36,512 views
Learn more: http://www.khanacademy.org/video?v=2QjdcVTgTTA
Using unit vectors to represent the components of a vector -
36
Optimal angle for a projectile part 2 - Hangtime
by Khan Academy
31,567 views
Learn more: http://www.khanacademy.org/video?v=XtAB9GOfLiM
Optimal angle for a projectile part 2 - Hangtime -
37
Optimal angle for a projectile part 3 - Horizontal distance as a function of angle (and speed)
by Khan Academy
29,481 views
Learn more: http://www.khanacademy.org/video?v=-h_x8TwC1ik
Horizontal distance as a function of angle (and speed) -
39
Normal Force and Contact Force
by Khan Academy
96,062 views
Learn more: http://www.khanacademy.org/video?v=1WOrgrIcQZU
The force that keeps a block of ice from falling towards the center of the earth -
40
Normal Force in an Elevator
by Khan Academy
87,034 views
Learn more: http://www.khanacademy.org/video?v=hoRsHNSrMpc
How the normal force changes when an elevator accelerates -
41
Inclined Plane Force Components
by Khan Academy
171,210 views
Learn more: http://www.khanacademy.org/video?v=TC23wD34C7k
Figuring out the components of the force due to gravity that are parallel and perpendicular to the surface of an inclined plane -
42
Ice Accelerating Down an Incline
by Khan Academy
80,019 views
Learn more: http://www.khanacademy.org/video?v=Mz2nDXElcoM
Figuring out the acceleration of ice down a plane made of ice -
43
Force of Friction Keeping the Block Stationary
by Khan Academy
103,974 views
Learn more: http://www.khanacademy.org/video?v=v8ODIMqbQ44
Block of wood kept stationary by the force of friction (Correction made in next video) -
44
Correction to Force of Friction Keeping the Block Stationary
by Khan Academy
43,331 views
Learn more: http://www.khanacademy.org/video?v=BukTc4q9BMc
Correction to Force of Friction Keeping the Block Stationary -
45
Force of Friction Keeping Velocity Constant
by Khan Academy
67,372 views
Learn more: http://www.khanacademy.org/video?v=iA7Thhnzc64
Calculating the coefficient of kinetic friction (correction made in next video) -
46
Intuition on Static and Kinetic Friction Comparisons
by Khan Academy
54,808 views
Learn more: http://www.khanacademy.org/video?v=J9BWNiOSGlc
Why static friction is harder to overcome than kinetic friction -
47
Static and Kinetic Friction Example
by Khan Academy
120,131 views
Learn more: http://www.khanacademy.org/video?v=ZA_D4O6l1lo
Thinking about the coefficients of static and kinetic friction -
48
Introduction to Tension
by Khan Academy
273,033 views
Learn more: http://www.khanacademy.org/video?v=_UrfHFEBIpU
An introduction to tension. Solving for the tension(s) in a set of wires when a weight is hanging from them. -
49
Tension (part 2)
by Khan Academy
160,473 views
Learn more: http://www.khanacademy.org/video?v=zwDJ1wVr7Is
A slightly more difficult tension problem. -
50
Tension in an accelerating system and pie in the face
by Khan Academy
106,864 views
Learn more: http://www.khanacademy.org/video?v=52wxpYnS64U
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. -
53
Introduction to Momentum
by Khan Academy
302,834 views
Learn more: http://www.khanacademy.org/video?v=XFhntPxow0U
What momentum is. A simple problem involving momentum. -
54
Momentum: Ice skater throws a ball
by Khan Academy
150,732 views
Learn more: http://www.khanacademy.org/video?v=vPkkCOlGND4
A simple conservation of momentum problem involving an ice skater and a ball -
55
2-dimensional momentum problem
by Khan Academy
154,801 views
Learn more: http://www.khanacademy.org/video?v=CFygKiTB-4A
An example of conservation of momentum in two dimensions. -
56
2-dimensional momentum problem (part 2)
by Khan Academy
76,877 views
Learn more: http://www.khanacademy.org/video?v=leudxqivIJI
We finish the 2-dimensional momentum problem -
57
Introduction to work and energy
by Khan Academy
375,352 views
Learn more: http://www.khanacademy.org/video?v=2WS1sG9fhOk
Introduction to work and energy -
58
Work and Energy (part 2)
by Khan Academy
227,447 views
Learn more: http://www.khanacademy.org/video?v=3mier94pbnU
More on work. Introduction to Kinetic and Potential Energies. -
59
Conservation of Energy
by Khan Academy
250,543 views
Learn more: http://www.khanacademy.org/video?v=kw_4Loo1HR4
Using the law of conservation of energy to see how potential energy is converted into kinetic energy -
60
Work/Energy problem with Friction
by Khan Academy
182,096 views
Learn more: http://www.khanacademy.org/video?v=YvacYWgygaA
A conservation of energy problem where all of the energy is not conserved. -
61
Introduction to mechanical advantage
by Khan Academy
106,404 views
Learn more: http://www.khanacademy.org/video?v=pfzJ-z5Ij48
Introduction to simple machines, mechanical advantage and moments. -
62
Mechanical Advantage (part 2)
by Khan Academy
55,158 views
Learn more: http://www.khanacademy.org/video?v=DiBXxWBrV24
More on mechanical advantage, levers and moments. -
63
Mechanical Advantage (part 3)
by Khan Academy
162,961 views
Learn more: http://www.khanacademy.org/video?v=vSsK7Rfa3yA
Introduction to pulleys and wedges -
64
Center of Mass
by Khan Academy
212,936 views
Learn more: http://www.khanacademy.org/video?v=VrflZifKIuw
Introduction to the center of mass -
65
Introduction to Torque
by Khan Academy
303,049 views
Learn more: http://www.khanacademy.org/video?v=QhuJn8YBtmg
An introduction to torque -
66
Moments
by Khan Academy
231,540 views
Learn more: http://www.khanacademy.org/video?v=ESusD8HRLBI
Introduction to moments -
67
Moments (part 2)
by Khan Academy
104,486 views
Learn more: http://www.khanacademy.org/video?v=peXbz0frV74
2 more moment problems. -
68
Unit Vector Notation
by Khan Academy
118,793 views
Learn more: http://www.khanacademy.org/video?v=FaF3v-ezbSk
Expressing a vector as the scaled sum of unit vectors -
69
Unit Vector Notation (part 2)
by Khan Academy
45,520 views
Learn more: http://www.khanacademy.org/video?v=595Tiga1gIg
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 -
72
Projectile Motion with Ordered Set Notation
by Khan Academy
23,029 views
Learn more: http://www.khanacademy.org/video?v=jl_gQ-eL3xo
Solving the second part to the projectile motion problem (with wind gust) using ordered set vector notation -
73
Centripetal Force and Acceleration Intuition
by Khan Academy
96,002 views
Learn more: http://www.khanacademy.org/video?v=vZOk8NnjILg
The direction of the force in cases of circular motion at constant speeds -
74
Visual Understanding of Centripetal Acceleration Formula
by Khan Academy
58,329 views
Learn more: http://www.khanacademy.org/video?v=NH1_sO8QY3o
Visual understanding of how centripetal acceleration relates to velocity and radius -
75
Relationship between angular velocity and speed
by Khan Academy
143,425 views
Learn more: http://www.khanacademy.org/video?v=zAx61CO5mDw
How angular velocity relates to speed -
76
Calculus proof of centripetal acceleration formula
by Khan Academy
31,619 views
Learn more: http://www.khanacademy.org/video?v=XjCEumlJBno
Proving that a = v^2/r -
77
Loop De Loop Question
by Khan Academy
37,974 views
Learn more: http://www.khanacademy.org/video?v=wjZb3zPuoeA
Asks students to find the minimum speed necessary to complete the loop de loop -
78
Loop De Loop Answer part 1
by Khan Academy
34,987 views
Learn more: http://www.khanacademy.org/video?v=4SQDybFjhRE
Figuring out the minimum speed at the top of the loop de loop to stay on the track -
79
Loop De Loop Answer part 2
by Khan Academy
23,171 views
Learn more: http://www.khanacademy.org/video?v=zcnnZz2pCSg
Figuring out the car's average speed while completing the loop de loop -
80
Acceleration Due to Gravity at the Space Station
by Khan Academy
30,074 views
Learn more: http://www.khanacademy.org/video?v=R5CRZONOHCU
What is the acceleration due to gravity at the space station -
81
Space Station Speed in Orbit
by Khan Academy
27,105 views
Learn more: http://www.khanacademy.org/video?v=9BNkmfHYYYI
Speed necessary for the space station to stay in orbit -
82
Conservation of angular momemtum
by Khan Academy
126,428 views
Learn more: http://www.khanacademy.org/video?v=s_R8d3isJDA
Angular momentum is constant when there is no net torque. -
83
Introduction to Newton's Law of Gravitation
by Khan Academy
142,412 views
Learn more: http://www.khanacademy.org/video?v=391txUI76gM
A little bit on gravity -
84
Gravitation (part 2)
by Khan Academy
75,454 views
Learn more: http://www.khanacademy.org/video?v=8i0j3j16yFk
A little bit more on gravity -
85
Intro to springs and Hooke's Law
by Khan Academy
164,489 views
Learn more: http://www.khanacademy.org/video?v=ZzwuHS9ldbY
Introduction to Hooke's Law -
86
Potential energy stored in a spring
by Khan Academy
108,035 views
Learn more: http://www.khanacademy.org/video?v=eVl5zs6Lqy0
Work needed to compress a spring is the same thing as the potential energy stored in the compressed spring. -
87
Spring potential energy example (mistake in math)
by Khan Academy
57,753 views
Learn more: http://www.khanacademy.org/video?v=P3QV9ktuYlQ
A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!) -
88
Introduction to Harmonic Motion
by Khan Academy
189,656 views
Learn more: http://www.khanacademy.org/video?v=Nk2q-_jkJVs
Intuition behind the motion of a mass on a spring (some calculus near the end). -
89
Harmonic Motion Part 2 (calculus)
by Khan Academy
105,952 views
Learn more: http://www.khanacademy.org/video?v=xoUppFlif04
We test whether Acos(wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx -
90
Harmonic Motion Part 3 (no calculus)
by Khan Academy
85,315 views
Learn more: http://www.khanacademy.org/video?v=oqBHBO8cqLI
Figuring out the period, frequency, and amplitude of the harmonic motion of a mass attached to a spring. -
91
Fluids (part 1)
by Khan Academy
261,667 views
Learn more: http://www.khanacademy.org/video?v=Pn5YEMwQb4Y
What a fluid is. Difference between liquids and gasses (both fluids). -
92
Fluids (part 2)
by Khan Academy
139,371 views
Learn more: http://www.khanacademy.org/video?v=lWDtFHDVqqk
Pressure and Pascal's Principal. -
93
Fluids (part 3)
by Khan Academy
105,946 views
Learn more: http://www.khanacademy.org/video?v=5EWjlpc0S00
Pressure in a fluid at depth -
94
Fluids (part 4)
by Khan Academy
82,526 views
Learn more: http://www.khanacademy.org/video?v=i6gz9VFyYks
Using our understanding of fluid pressure to figure out the height of a column of mercury. -
95
Fluids (part 5)
by Khan Academy
87,558 views
Learn more: http://www.khanacademy.org/video?v=vzID7ds600c
Introduction to Archimedes' principle and buoyant force. -
96
Fluids (part 6)
by Khan Academy
76,130 views
Learn more: http://www.khanacademy.org/video?v=wwjtuZ5vTvc
A couple of problems involving Archimedes' principle and buoyant forces. -
97
Fluids (part 7)
by Khan Academy
71,585 views
Learn more: http://www.khanacademy.org/video?v=G4CgOF4ccXk
Introduction to the study of moving fluids. -
98
Fluids (part 8)
by Khan Academy
64,836 views
Learn more: http://www.khanacademy.org/video?v=uqyLOuAzbvo
Beginning of the proof of Bernoulli's Equation. -
99
Fluids (part 9)
by Khan Academy
53,741 views
Learn more: http://www.khanacademy.org/video?v=QX2YLR09Q78
Second part of the Bernoulli's Equation proof. Beginning of a problem that uses the equation. -
100
Fluids (part 10)
by Khan Academy
46,791 views
Learn more: http://www.khanacademy.org/video?v=NGpJPz44JYc
Second part of the example that uses Bernoulli's equation. -
101
Fluids (part 11)
by Khan Academy
38,422 views
Learn more: http://www.khanacademy.org/video?v=HnfBFeLunk4
Clarification of the problem in part 10 -
102
Fluids (part 12)
by Khan Academy
50,449 views
Learn more: http://www.khanacademy.org/video?v=xlJYYM5TWoA
Complete example of a Bernoulli's Equation exercise. -
103
Thermodynamics (part 1)
by Khan Academy
450,718 views
Learn more: http://www.khanacademy.org/video?v=tQcB9BLUoVI
Intuition of how gases generate pressure in a container and why pressure x volume is proportional to the combined kinetic energy of the molecules in the volume. -
104
Thermodynamics (part 2)
by Khan Academy
169,602 views
Learn more: http://www.khanacademy.org/video?v=x34OTtDE5q8
Example problem that pv=pv. Introduction to temperature. -
105
Thermodynamics (part 3)
by Khan Academy
118,498 views
Learn more: http://www.khanacademy.org/video?v=HvYUKRMT0VI
Introduction to Kelvin. Example of a problem involving the ideal gas law -
106
Thermodynamics (part 4)
by Khan Academy
91,916 views
Learn more: http://www.khanacademy.org/video?v=5B1i26dUwME
Introduction to the concept of a mole. Universal gas constant R. PV=nRT -
107
Thermodynamics (part 5)
by Khan Academy
90,012 views
Learn more: http://www.khanacademy.org/video?v=UekR9J31a2o
Example problem involving PV=nRT -
108
Electrostatics (part 1): Introduction to Charge and Coulomb's Law
by Khan Academy
406,449 views
Learn more: http://www.khanacademy.org/video?v=NXMgvrS8Gr8
Introduction to Charge and Coulomb's Law (video from May 2008 that I forgot to upload) -
109
Electrostatics (part 2)
by Khan Academy
243,911 views
Learn more: http://www.khanacademy.org/video?v=0YOGrTNgGhE
Electric Fields -
110
Proof (Advanced): Field from infinite plate (part 1)
by Khan Academy
116,528 views
Learn more: http://www.khanacademy.org/video?v=prLfVucoxpw
Electric field generated by a uniformly charged, infinite plate -
111
Proof (Advanced): Field from infinite plate (part 2)
by Khan Academy
54,703 views
Learn more: http://www.khanacademy.org/video?v=TxwE4_dXo8s
We see that the infinite, uniformly charged plate generates a constant electric field (independent of the height above the plate) -
112
Electric Potential Energy
by Khan Academy
287,840 views
Learn more: http://www.khanacademy.org/video?v=elJUghWSVh4
Introduction to electric potential -
113
Electric Potential Energy (part 2-- involves calculus)
by Khan Academy
131,381 views
Learn more: http://www.khanacademy.org/video?v=CqsYCIjSm9A
Electric potential energy difference in a varying field -
114
Voltage
by Khan Academy
226,975 views
Learn more: http://www.khanacademy.org/video?v=zqGvUbvVQXg
Difference between electrical potential (voltage) and electrical potential energy -
115
Capacitance
by Khan Academy
226,658 views
Learn more: http://www.khanacademy.org/video?v=ngOC4eUQl8Y
Introduction to the capacitance of a two place capacitor -
116
Circuits (part 1)
by Khan Academy
416,576 views
Learn more: http://www.khanacademy.org/video?v=3o8_EARoMtg
Introduction to electricity, circuits, current and resistance -
117
Circuits (part 2)
by Khan Academy
213,708 views
Learn more: http://www.khanacademy.org/video?v=7vHh1sfZ5KE
Resistors in series -
118
Circuits (part 3)
by Khan Academy
183,813 views
Learn more: http://www.khanacademy.org/video?v=ZrMw7P6P2Gw
Resistors in parallel -
119
Circuits (part 4)
by Khan Academy
166,608 views
Learn more: http://www.khanacademy.org/video?v=3NcIK0s3IwU
A hairy resistance problem -
120
Cross product 1
by Khan Academy
128,460 views
Learn more: http://www.khanacademy.org/video?v=zA0fvwtvgvA
Introduction to the cross product -
121
Cross Product 2
by Khan Academy
64,986 views
Learn more: http://www.khanacademy.org/video?v=o_puKe_lTKk
A little more intuition on the cross product. -
122
Cross Product and Torque
by Khan Academy
77,700 views
Learn more: http://www.khanacademy.org/video?v=s38l6nmTrvM
The cross product and the direction of torque. -
123
Introduction to Magnetism
by Khan Academy
332,341 views
Learn more: http://www.khanacademy.org/video?v=8Y4JSp5U82I
An introduction to magnetism -
124
Magnetism 2
by Khan Academy
197,296 views
Learn more: http://www.khanacademy.org/video?v=NnlAI4ZiUrQ
Magnetic fields and their effects on moving electrical charges -
125
Magnetism 3
by Khan Academy
134,474 views
Learn more: http://www.khanacademy.org/video?v=LTuGQy4rmmo
Whats happens when a speeding proton goes through a magnetic field -
126
Magnetism 4
by Khan Academy
102,815 views
Learn more: http://www.khanacademy.org/video?v=b1QFKLZC11U
Part 2 of the proton through a magnetic field problem -
127
Magnetism 5
by Khan Academy
98,315 views
Learn more: http://www.khanacademy.org/video?v=jQ2nD8ZGeEw
Magnetic force on a wire carrying current. -
128
Magnetism 6: Magnetic field due to current
by Khan Academy
147,889 views
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See how a wire carrying a current creates a magnetic field. -
129
Magnetism 7
by Khan Academy
86,993 views
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The magnetic force that two current-carrying wires exert on each other. -
130
Magnetism 8
by Khan Academy
70,574 views
Learn more: http://www.khanacademy.org/video?v=4tctB1wZNiI
More on the forces exerted by 2 current carrying wires on each other. -
131
Magnetism 9: Electric Motors
by Khan Academy
96,785 views
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Using a magnetic field to exert torque on a rotating circuit. -
132
Magnetism 10: Electric Motors
by Khan Academy
54,075 views
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Why the circuit will keep flipping over. -
133
Magnetism 11: Electric Motors
by Khan Academy
49,762 views
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Using a commutator to solve the flipping problem and create an electric motor. -
134
Magnetism 12: Induced Current in a Wire
by Khan Academy
116,421 views
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Induced current and EMF in a moving wire from a magnetic field. -
135
The dot product
by Khan Academy
132,696 views
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Introduction to the vector dot product. -
136
Dot vs. Cross Product
by Khan Academy
114,816 views
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Understanding the differences between the dot and cross products -
137
Calculating dot and cross products with unit vector notation
by Khan Academy
80,881 views
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Calculating the dot and cross products when vectors are presented in their x, y, and z (or i,j, and k) components. -
138
Introduction to Waves
by Khan Academy
215,694 views
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Introduction to transverse and longitudinal waves -
139
Amplitude, Period, Frequency and Wavelength of Periodic Waves
by Khan Academy
226,253 views
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Amplitude, period, frequency and wavelength of periodic waves -
140
Introduction to the Doppler Effect
by Khan Academy
112,749 views
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Introduction to the Doppler Effect -
141
Doppler effect formula for observed frequency
by Khan Academy
51,842 views
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Doppler effect formula for observed frequency -
142
Doppler effect formula when source is moving away
by Khan Academy
45,828 views
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Doppler effect formula when source is moving away -
143
When the source and the wave move at the same velocity
by Khan Academy
30,588 views
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When the source and the wave move at the same velocity -
144
Mach Numbers
by Khan Academy
29,159 views
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Mach numbers -
145
Specular and Diffuse Reflection
by Khan Academy
56,953 views
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Specular and Diffuse Reflection -
146
Specular and Diffuse Reflection 2
by Khan Academy
33,164 views
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Specular and Diffuse Reflection 2 -
147
Refraction and Snell's Law
by Khan Academy
112,045 views
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Refraction and Snell's Law -
148
Refraction in Water
by Khan Academy
58,471 views
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Refraction in Water -
149
Snell's Law Examples 1
by Khan Academy
63,000 views
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Snell's Law Examples 1 -
150
Snell's Law Example 2
by Khan Academy
34,398 views
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Snell's Law Example 2 -
151
Total Internal Reflection
by Khan Academy
77,327 views
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Critical incident angle and total internal reflection -
152
Virtual Image
by Khan Academy
75,212 views
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Virtual Image -
153
Parabolic Mirrors and Real Images
by Khan Academy
60,509 views
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Parabolic Mirrors and Real Images -
154
Parabolic Mirrors 2
by Khan Academy
39,266 views
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Parabolic Mirrors 2 -
155
Convex Parabolic Mirrors
by Khan Academy
42,515 views
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Convex Parabolic Mirrors -
156
Convex Lenses
by Khan Academy
82,846 views
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Convex Lenses -
157
Convex Lens Examples
by Khan Academy
53,173 views
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Convex Lens Examples -
158
Concave Lenses
by Khan Academy
57,254 views
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Concave Lenses -
159
Object Image and Focal Distance Relationship (Proof of Formula)
by Khan Academy
43,067 views
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Object Image and Focal Distance Relationship (Proof of Formula) -
160
Object Image Height and Distance Relationship
by Khan Academy
29,965 views
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Object Image Height and Distance Relationship -
161
Viewing g as the value of Earth's Gravitational Field Near the Surface
by Khan Academy
28,840 views
Learn more: http://www.khanacademy.org/video?v=1E3Z_R5AHdg
Viewing g as the value of Earth's gravitational field near the surface rather than the acceleration due to gravity near Earth's surface for an object in freefall
