UNSW Lecturer Answers HSC Physics Questions! (1 Viewer)

[physician]

Hi everyone!

High School Physics

A forum designed mainly for HSC students in New South Wales, Australia. The high school syllabus in this state is rather unusual, in that it has lots of history and social studies and it is weak in real, quantitative physics. Where possible, we shall try to answer the non-physics questions raised by this syllabus. However, the University of New South Wales encourages students to ask questions about real physics.
(extracted from the forum)
http://www.phys.unsw.edu.au/bbs/viewtopic.php?t=192

If u have any questions, feel free to ask, and get them asnwered by one of the best Physics lecturers

Make sure u visit the FAQ also:

http://www.phys.unsw.edu.au/~jw/FAQ.html


http://www.phys.unsw.edu.au/bbs/viewforum.php?f=13

Post ur questions here^

All the best with ur studies!

 

[Dragie]

Could someone help me answer this question? I know it's quite basic but I really don't get it. Thank you!

 

[rama_v]

Could someone help me answer this question? I know it's quite basic but I really don't get it. Thank you!

Please dont get us started on this...lol

http://community.boredofstudies.org...ck-question-lenzs-law.html?highlight=lenz+law

 

[helper]

answering your question Dragie:

using the right hand palm rule, place your fingers in the direction north-to-south and your palm in the direction of motion, since a force is obviously acting in that direction to make it move. your thumb ends up pointing towards end X. However the conventional current moves opposite to this, that is towards end Y,

No current is flowing unless there is an external circuit connected. If there was an external circuit it would be flowing from X to Y in the external circuit and Y to X in the rod.

See
http://community.boredofstudies.org/18/physics/90821/2002-hsc.html

Anyway how about keeping this thread on topic.
Joe's site is an excellent resource.

 

[physician]

Anyway how about keeping this thread on topic.
Joe's site is an excellent resource.

Thanks Helper!

Joe Wolfe is an excellent lecturer and he really knows his stuff. Dont be fooled by the fact that he's a university lecturer, he is aware of the HSC physics syllabus, lol, its always so hilarious when he makes fun of the "History and Geography" in the HSC physics syllabus.

If I knew his site and forum existed when i was doing the HSC I would have surely visited them frequently, theyre very informative, and excellent for an additional resource as Helper has already mentioned!

 

[rama_v]

Joe's site is an excellent resource.

Absolutely. Joe is in fact our lecturer for physics (PHYS1131) and he really knows his stuff. I highly reccomend his site.

 

[helper]

Lecturing ability I will not comment on as my strongest memory was him storming out of first year lectures when he was showered in paper planes.

Did enjoy him a lot more in second year.

 

[Dragie]

Ohhhhhhhhh right! Thanks to all of you - I think I knew that but I forgot most of it haha anyways thanks for that - you all rock!

 

[Cade]

can anyone help teach me how to derive the snell's equation with total internal refraction in water to glass
nw=square root 2 of ng square - sin(square)b where nw is the refractive index of water and glass respectively.
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[Dragie]

can anyone help teach me how to derive the snell's equation with total internal refraction in water to glass
nw=square root 2 of ng square - sin(square)b where nw is the refractive index of water and glass respectively.
<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" oreferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><vath o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></vath><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 65.25pt; HEIGHT: 18.75pt" ole="" type="#_x0000_t75"><v:imagedata o:title="" src="file:///C:\DOCUME~1\881203~1\LOCALS~1\Temp\msohtml1\01\clip_image001.wmz"></v:imagedata></v:shape>
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Ooooooh I'm confuddled here - So many damn unnecessary symbols hehe Where exactly is the question...?

 

[henry08]

 

[Pwnage101]

What is that referring to?