287 free courses & lectures available for Physics

Cross product and torque | Moments, torque, and angular momentum | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.17 hours
The cross product and the direction of torque. Created by Sal Khan. Watch the next lesson: ...
  
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Introduction to magnetism | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.18 hours
An introduction to magnetism. Created by Sal Khan. Watch the next lesson: ...
  
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Magnetic force on a proton example (part 2) | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.18 hours
Sal determines the radius of the circle traveled by the proton in the previous example by using the formula for centripetal acceleration. Created by Sal Khan.
  
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Magnetic force on a charge | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.15 hours
Sal shows how to find the size and direction of the magnetic force using F=qvB and the right hand rule. Created by Sal Khan. Watch the next lesson: ...
  
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Magnetic force on a current carrying wire | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.18 hours
Sal derives the formula F=ILB to determine the force on a current carrying wire. Created by Sal Khan. Watch the next lesson: ...
  
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Magnetic field created by a current carrying wire | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.16 hours
See how a wire carrying a current creates a magnetic field. Created by Sal Khan. Watch the next lesson: ...
  
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Electric motors (part 3) | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.11 hours
Sal finishes the explanation of how a commutator will allow a loop of wire to continue spinning in a magnetic field, thereby allowing it to work as an electric motor ...
  
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Induced current in a wire | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.2 hours
Sal determines the current and EMF induced in a wire pulled through a magnetic field. Created by Sal Khan. Watch the next lesson: ...
  
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The dot product | Magnetic forces, magnetic fields, and Faraday's law | Physics | Khan ...

by Khan Academy on Youtube Youtube
Duration: 0.18 hours
Introduction to the vector dot product. Created by Sal Khan. Watch the next lesson: ...
  
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Dot vs. cross product | Physics | Khan Academy

by Khan Academy on Youtube Youtube
Duration: 0.18 hours
Understanding the differences between the dot and cross products. Created by Sal Khan. Watch the next lesson: ...
  
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