# Recent content by Physics_FTW

1. ### 2010 HSC question

Also, im thinking the motion of the ball would look more like this: Initially velocity would be along the same line as the angle made from the horizontal? As train accelerates this angle would increase me thinks
2. ### 2010 HSC question

You could easily work out acceleration from what you have been given if you had a protractor.. Force acting down on mass = mg Ficticious force acting to right of mass = ma Tan theta = ma/mg Tan theta = a/g a = g*(Tan Theta)
3. ### HSC physics question

YOU THINK!?!? Thanks Captain Obvious! Seeing as he doesn't have any verb in the question, I was unsure of how to proceed, there was no 'explain', 'describe', 'outline' etc.. and no indication of the mark value of the question. The verb which should be used in the question would influence how I...
4. ### 2010 HSC question

The ball should go in the other direction.. As the mass is hanging to the right, this means that the train is accelerating to the left, therefore the ball should bounce to the right
5. ### HSC physics question

Special relativity: - light travels at a constant speed, doesnt undergo galilean relativity (i.e., velocity A relative to B = Va - Vb) PE Effect: - Light has wave/particle duality
6. ### Electromagnetic Induction -- Moving Magnet

LoL, love the funky music :) I'm still not clear about the magnet whilst it is inside the solenoid, as for your statement to be true, it would mean that the rate of change of flux at both ends is equal, which is to be unlikely throughout the entire journey of the magnet through the solenoid, ie...
7. ### Does anyone have any exam papers or solutions for any textbooks?

RAWF, dude.. There are like 12 sets, each set has at least 50 questions, so like 600 questions in total. Not to bad to get that done in 1 day, thats like a question a minute for 10 hours straight, plus I took my time to make it neat, loooooool. Some of the extension questions are tricky too! I...
8. ### Electromagnetic Induction -- Moving Magnet

Easy for you maybe.. I havent even started Year 11 Physics yet.. But to me it looks boring, ceebz looking over that. Lets say the initial movement created a positive reading on the galvanometer, i dont understand whether the reading would be positive, negative or zero when the magnet is inside...
9. ### Electromagnetic Induction -- Moving Magnet

Quick Question, If you have a Bar magnet with its North Pole approaching a solenoid, a current will be induced into the solenoid to create a North Pole at the entrance to the solenoid (Hence South Pole on other side?) Now, say the Magnet is 10cm long and the solenoid is 20cm long and the...
10. ### Does anyone have any exam papers or solutions for any textbooks?

I was bored on Monday and did the worked solutions to Cambridge Year 11 (first chapter), it honestly took me the whole day. Cbf doing the rest of them
11. ### Will Standard English prevent me getting a high ATAR?

My brother says that usually its only top 1-2% in the state in standard get band 6, whereas its closer to 8-12% for advanced. He's shown me all the statewide statistics, which informed me well when I made my subject decisions :) He did standard, got band 5 (89), still got over 99 UAI. So it is...
12. ### Disproving the aether

James Clerk Maxwell's equations on electromagnetism seem to rely on the existence of the aether and he was the one which suggested the use of an interferometer to measure the speed of a frame of reference with respect to this 'ultimate rest frame' -- later tested by Michelson and Morley and the...
13. ### Where did I go wrong?

The value you have gotten is correct for the question asked. Easy way to check would be to sub in your 'r' value in the eqn 'g = GM/r^2' Your r value comes out to a g of around 0.098 (which is 0.01 of g on earth) Their r value comes out to a g of around 9.268. WRONG.
14. ### physics paper thoughts if anyone remembers.

Gravitational effect of the Earth out of the syllabus? I dunno about that. I reckon if you say something about seeing as it is close to the Earth, then there is the influence from the Earths gravitational field aswell as the influence from the Suns gravitational field, and the combination of...
15. ### physics paper thoughts if anyone remembers.

Q24 is to do with Lagrange points. I read that in the yr12 textbook. Q32 even my Science teacher (who is the head Physics teacher) has nfi how that question can be marked for 8 marks