Physics notes

Physics mindmaps http://www.sendspace.com/file/iwz6kg

Resources exp.

The resources i have uploaded ( mindmaps and formulaes to rmb ) they have EXPIRED because of the 7 day limitation of yousendit.com.

However i will try to re-upload them in the coming days.

Top 5 JCs Prelims Paper 1, and Answers!

The file is zipped up, can open it with winzip ( www.winzip.com )
Alternatively, if you can't download or can't unzip you can add me on msn "gwx04@yahoo.com.sg" or alternatively, send me an email to that same address :)

Papers, and their answers are copyright of their respective JCs, & am not responsible for any inaccuracies in answers ( from the papers that I've done, only NJC seems erm... unreliable? NJC paper 2 and 3 might have some inaccuracies. )

http://download.yousendit.com/DA13B516684F648B

There is no password for the .zip file but for the .pdf files to open it you need to input the password "SDSM" - Do note that they are in capital letter :)

The link is available for SEVEN DAYS. More than enough :)

~ weixue

Physics H2 Syllabus Link

Hope it helps :)

http://www.seab.gov.sg/SEAB/aLevel/syllabus/2007_GCE_A_Level_Syllabuses/9745_Phy_amended.pdf

You may find it useful to see which "Learning outcomes" are untested yet :)

Phy Detailed MCQ Predictions

Chemistry is over!! :) Chemistry was very much more well-predicted topic than my physics predictions, but I'm going to ATTEMPT to spot some MCQ questions.

Note : i haven't done the H2 spec paper yet at all. will be doing it later, and see what i can glean.

So, Physics DETAILED MCQ PREDICTION based on syllabus requirements will be uploaded by midnight today :)

EnJoy :)

MCQ Spotted Questions

Firstly an errata : in my notes the semiconductor diode I-V characteristic graph is WRONG. pls reflect the negative x-axis about the x-axis. otherwise u can refer to textbook or ask your friends.


Some very significant topics in which were NOT tested AT ALL.
- Electromagnetic Induction
- Lasers
- Superposition

Besides these three main ones which are likely to come out probably 2 or more questions in the MCQ paper, the following concepts and parts are not tested yet :


Measurement
- homogeneity of equations
- base quantities and base units
- derived quantities and derived units
- prefixes

Dynamics
- interpretation of graphs
- objects falling with air resistance
- projectile motion

Thermal Physics
- Q=mL
- Q=mcTheta
- Kinetic Theory of Matter
- Thermometry

Forces
- Hooke’s Law
- Upthrust, Archimedes principle, etc
- Torques
- Moment
- Forces in equilibrium, resultant force
- Free body diagrams

Dynamics
- objects inclined on a plane

Work, Energy,Power
- Work done in a stretched spring
- Power = Force X Velocity

Circular motion
- angular displacement
- objects in vertical circle or horizontal circle

Thermal Physics 2
- Avogadro constant
- Use of pV = NRT
- Use of the relation KE proportional to T.

Oscillations
- graphs for oscillations ( accn-disp, v-disp, v-t, a-t, s-t )
- damping of oscillations
- resonance
- forced oscillations

Wave motion
- transverse vs longitudinal waves
- phase difference
- intensity is proportional to amplitude squared.
- Intensity = power/area

Superposition
- Young’s Double slit experiment , use of fringe separation formula
- Diffraction
- Diffraction grating formula
- Stationary waves
- Stationary waves on string, and in pipes

Current of Electricity and DC circuits
- Q=It
- Mechanism of charge flow in metals and semiconductors
- Definitions
- Variation of resistant with T for metals and semiconductors ( e.g. therm )
- Potentiometer concept
- Internal resistance of a battery

Gravitational Field
- to know all the formulas

E-field
- how to draw E-fields
- E = V/D concept.

Electromagnetism
- F = BIL
- Magnetic flux density and tesla
- Velocity selection
- Flux patterns on a long straight wire, flat circular coil and long solenoid
- Forces between current-carrying conductors
- Presence of ferrous core in solenoid and transformers

Electromagnetic Induction
- not tested at all.

Alternating currents
- not tested at all.

Quantum Physics
- electron diffraction experiment
- de broglie’s equation
- energy-level questions
- emission and absorption spectrums
- T + R =1 relationship
- Wave function
- Scanning tunneling microscope
- X-ray spectrum

Lasers
- not tested at all.

Semiconductors
- intrinsic conductors
- valence bands, conduction bands and forbidden bands
- Resistance vs. T graph of intrinsic conductors

Nuclear physics
- alpha-scattering experiment
- conservation in nuclear processes

Radioactivity
- spontaneous and random nature of nuclear decay
- random nature of radioactive decay from fluctuations in count rate
- background radiation
- nature of alpha, beta and gamma radiation.
- Activity and decay constant
- The exponential graph and relation of nuclear decay
- Half-life
- Effects both direct and indirect of ionizing radiation on living tissues and cells.


~ WeiXue

Marks Assessed

The following topics have 0 marks being assessed in paper 3. Thus likely to come out in Paper 2. Note : Paper 2 is only 1 hour 15 mins paper with 6 to 7 questions incl. data-response so it is UNLIKELY that topics that come out in high weightage would come out again.

The ZERO Marks assessed are likely to come out, and they are

- Measurement ( question 1 )
- Wave Motion ( question 2 )
- Superposition ( question 3 )
- Electromagnetism ( question 4 )
- Electromagnetic Induction ( question 5 )
- Alternating Currents ( question 6 )
- Lasers and Semiconductors ( question 7 )

Of course, cambridge may choose to combine topics.

The following have mark weightage of less than 5 but more than 0:
- Kinematics ( 3 marks )
- Forces ( 1 mark )
- Work Energy And Power ( 2 marks )
- Oscillations ( 1 mark )
- DC Circuits ( 4 marks )
- Nuclear Physics ( 4 marks )

The following have weightage of more than 10 marks and thus UNLIKELY to come out again.
- Gravitational Field (13 marks)
- Thermal Physics (20marks)
- Quantum Physics (20marks)

H2 Chem

http://h2chemistry.blogspot.com

- weixue

list of formulas for phy h2.

Here is a list of formulas ( 2 pages ) to memorise in the h2 syllabus . Those alr in the formula booklet were not included.

Oh yes common mistakes in the Heisenberg uncertainty formula ( which I have made )
- the sign is more than or equal, not other variations
- it is h/4(pi) and not h/4 or h/2(pi) or other variations

http://download.yousendit.com/8B42568C205B1681

File is available for 7 days ( I will try to remember to re-upload once its expired )

comments

By 6 Nov I will publish a list of physics formula to remember for p2, which are not in the formula list. They are very impt fla to rmb for p2.

P2 - quite unlikely to come out the OPTION topics, since there are already so many untested topics.

pear's blog has a very useful definitons list taken from the syllabus document, so pls read that too for p2.

- weixue

ajc laser and semiconductor solutions 2007

available at

http://www.sendspace.com/file/y4bvci



any errors pls email : gwx04@yahoo.com.sg

mindmaps

mindmaps in a .zip file for
- quantum physics
- nuclear physics
- emi/em
- alternating currents
- COE

download :
http://download.yousendit.com/8B42568C205B1681

Alternative download :
Pls tell me if yousendit does not work
by emailing "gwx04@yahoo.com.sg"

all the best for p2 and p1.

* any errors pls contact me

physics h2

paper 3 is over.

topics indicated below will come out for p2. topics indicated below did NOT come out AT ALL.
1. Measurement : determination of uncertainties, types of error – sys. rand
2. Mechanics – three eqns of uniformly-accelerated motion
3. Forces – archemides principle, fbd diagrams, upthrust = mg for floating obj, etc
4. WEP – W=F x S x CosTheta where Theta is angle b/w force and displacement.
5. Motion in Circle – formulas for motion of circle
6. Wave motion
7. Superposition
8. EM/EMI
9. Lasers and Semiconductors
10. Radioactivity
11. Alternating currents
12. DC circuits


Possible subtopics in P2 ( but likely to come out in P1 instead )
- Thermal phy . Q=mcTheta, explanation part of thermal phy
- Oscillations – application of formula, resonance effect, damping
- Quantum physics

OPTION topics in P3 were : Quantum 1 & 3, Gravl Field + Circular motion , & Thermal Physics 2 ( Internal energy, ideal gas, etc )