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PH6 Physics Predictions watch

1. Here are some possibilites for the synoptic paper

1) Mass spectrometer/spectrograph

2)The Van de Graaff Generator

3) Diffraction/Interference , this might be a quesiton from syllabus . or they might bring smth out of syllabus in the form of passage such as "Diffraction grating" or "Physics of CD" as in Jan 2001

4)Resonance , Damping and this stuff

5)Capacitors - their graphs and formulas , concentrate on Energy part.

These are my predictions , any one can add , or attach some pastpapers quesitons would be helpful
2. Here are some questions uploaded.
try to solve them , then we will discuss it
Attached Files
3. interference.doc (25.5 KB, 191 views)
4. Nuclear Matter.doc (30.5 KB, 151 views)
5. that's funny, I did the first one today.

part (i) need emphasis on the superposition of two coherent waves which are a phase angle of 1pi out at that point, so their amplitudes at that point are always equal mangitude but in the opposite direction. the vector sum is therefore always zero

(ii), the point is on the second dotted line out so the difference is 3/2 lambda, you add this to the distance from D1 to find the distance to D2

(iii) a stationary wave pattern is when two coherent waves with a similar amplitude are moving along the same line in opposite directions, so their superposition leads to nodes and antinodes. there are 6 nodes between them, and each node is half a wavelength long (1.5cm) so the distance is 9cm

(b) (i) typical magnetic one.. the alternating current produces an alternating magnetic field which attracts and repels the manget, causing alternating accelerration fo the magnetic dipper.

(ii) v = wx = (2*pi*f)*(0.75*10^-3) = ...
6. practice
Attached Files
7. capacitors.doc (32.0 KB, 181 views)
8. fission.doc (26.0 KB, 202 views)
9. GM Tube.doc (42.0 KB, 112 views)
10. Van de Graaff machine.doc (27.0 KB, 114 views)
11. What exam board are you talking about as I have Salters Horners Physics PSA 6 (synoptic) on Monday but I have never even studied the following:

1) Mass spectrometer/spectrograph
2)The Van de Graaff Generator
12. Edexcel A2 GCE
13. (Original post by mik1w)
that's funny, I did the first one today.

part (i) need emphasis on the superposition of two coherent waves which are a phase angle of 1pi out at that point, so their amplitudes at that point are always equal mangitude but in the opposite direction. the vector sum is therefore always zero

(ii), the point is on the second dotted line out so the difference is 3/2 lambda, you add this to the distance from D1 to find the distance to D2

(iii) a stationary wave pattern is when two coherent waves with a similar amplitude are moving along the same line in opposite directions, so their superposition leads to nodes and antinodes. there are 6 nodes between them, and each node is half a wavelength long (1.5cm) so the distance is 9cm

(b) (i) typical magnetic one.. the alternating current produces an alternating magnetic field which attracts and repels the manget, causing alternating accelerration fo the magnetic dipper.

(ii) v = wx = (2*pi*f)*(0.75*10^-3) = ...

i dont understand how you worked out the distance between d1 and d2....
14. Study the cathode ray oscilloscope , study how to draw and read data from it and NOT how it works.
Also revise THE WAVE-PARTICLE DUALITY THING (DE BROGLIE WAVELENGTH) AND ELECTRON DIFFRACTION , EMISSION AND ABSORPTION SPECTRA

I'm sure that electron diffraction will come , since it has not been asked for 10 years in all A2 papers , so its time for it
Attached Files
15. CRO - Fission.doc (32.0 KB, 111 views)
16. I remmebered that my teacher told me while doing Unit 5 , that "The Hall Effect" is a good source of questions to ask about in the synoptic , not the hall probe , the theory behind the hall probe.

It's very simple , if u have a conductor , and current is flowing thorugh it , then u can identify direction of current , and direction of motion of electrons , now when I apply a magnetic field perpendicular to the current , a magnetic force acts on the current whose direction is determined by Fleming's left hand rule , use it u will find that a vertical force acts on the electrons causing them to accumalate in one side , that is creating a potential.so other electrons will be acted by 2 opposite vertical forces , one magnetic and the other electric.
It is the balance of these 2 forces which gives the hall voltage.
equate Bqv = eE where E=hall voltage/d

so this is what happends when u place the hall probe in a filed , once the 2 requirements are satisfied , magnetic and electric field , a voltage reading is taken,

Hope u understood

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Updated: June 26, 2005
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