# Physics Resources

You may find these free resources to be useful:

www.twig-world.com videos: See the separate sheet.

FuseSchool has 52 videos on physics on YouTube. Most last between 3 and 5 minutes. The level is a bit low for this class, but it may be a good place to start. You can see many of them presented topic by topic on my Physical Science resource page.

Classical Physics (physics without quantum mechanics or relativity) with Professor Dave.

Modern Physics (quantum physics to understand the very small and relativity to understand gravity and the very fast). With Professor Dave.

www.freesciencelessons.co.uk/videos has many good videos for chemistry, physics and biology for about grade 10 level (they are designed for British GCSE level).

Support for the Conceptual Physics textbook:

Find more good physics resources HERE.

## Resources by topic

### Waves and oscillations

• This video is similar to the one above but it does not explain 'Hooke's Law'. Hooke's Law says that the force exerted by a spring is directly proportional to the displacement of the end of the spring away from the equilibrium position. We call the constant of proportionality the spring constant, k, which really just represents the stiffness of the spring. So we get the equation F = -kx where x is the displacement of the end of the spring. There is a negative sign since the force of the spring is always in the opposite direction to the displacement. If the spring is stretched to the right, for example, then it will pull back to the left towards the 'equilibrium position'.

## Electricity

### Electrostatics

This 10 minute video below is good but you don't need to know about 'charging by contact' or 'charging by induction' for my course:

### Current Electricity (electric circuits)

• Here is a chapter on electric circuits at physicsclassroom.com.
• Here's an excellent 8 minute video about current electricity at just the right level for you. Don't forget that 'potential difference' is another way of saying 'voltage', and that 'voltage' is the energy gained or lost by each coulomb of charge when it moves from one point to another in a circuit. Voltage = Energy / Charge V = E/Q Also, know that current (I as in India) is the charge Q in coulombs passing a point in a circuit each second I = Q/t Combining the two equations we've just seen, we can get an equation for electrical power. We've already learnt that power = energy transformed per second or energy transformed divided by time (remember doing an experiment to find the power of your legs?) Power = Energy / time If we multiply voltage by current: VI = E/Q x Q/t = E/t = P (power) so power = voltage x current P = VI

## Other links

Download all kinds of free printer-ready graph paper here: incompetech.com/graphpaper/multicolor/

HERE are notes to accompany the 'ITESM physics' class I used to teach at the CIV. This was NOT the same syllabus as we have at ICS but you may find it helpful. It focuses ONLY on mechanics.

On YouTube, search for videos made by famous physicists and physics teachers

· Julius Sumner Miller (old, but the level is good) www.youtube.com/user/dramaticphysics/playlists

More advanced resources for curious folks…

· Walter Lewin (a lecturer at MIT, fairly recent) such as Newton's Laws: www.youtube.com/watch?v=oduZsA0Tk58

· Richard Feynman (very famous physicist, but the videos are old)

MIT physics demos: www.youtube.com/watch?v=e0n6xLdwaT0&index=2&list=PL860B6886A47E5490

Physics Girl: www.youtube.com/user/physicswoman