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PHYSICS APPLICATION
- Thread starter gentleman
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i have attatched an attatchment
:good: luck
:good: luck
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Q1. Outline the function of the non-uniform magnetic field, superimposed on the large constant magnetic field, in diagnosis using magnetic resonance [8]
Q2. Explain the meaning of specific acoustic impedence and its importance to the intensity reflection coefficient at a boundary. [6]
Q3. Explain in simple terms the need for remote sensing (non-invasive techniques of diagnosis) in medicine. [6]
Q4. Briefly explain the effects of negative feedback on the gain of an operational amplifier. [4]
please answer the above questions as u will anwer them in ur exams..
Q2. Explain the meaning of specific acoustic impedence and its importance to the intensity reflection coefficient at a boundary. [6]
Q3. Explain in simple terms the need for remote sensing (non-invasive techniques of diagnosis) in medicine. [6]
Q4. Briefly explain the effects of negative feedback on the gain of an operational amplifier. [4]
please answer the above questions as u will anwer them in ur exams..
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plzzzzzz give me the answer :S
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you mean these gonna come in M/J 2011 exam...u kidin me????
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NO!!! I just need help wid dese questions....
m unable to find da exact answer so need help
m unable to find da exact answer so need help
U can find the answers
1. M/J 2008 qn10
2. Acoustic impedance is the product of the density (ρ) of the medium and the speed (c) of the medium.
3. Non invasive techniques are designed to present a much smaller risk than surgery and are in general far less traumatic for the patient
4.
•Reduces the gain,
•Increases the bandwidth,
•Causes less distortion of the output
•Greater operating stability
SORRY FOR NOT GIVING U THE FULL ANSWERS BECAUSE THAT'S ALL I COULD GET.
SOME QNS CAN COME BUT I DONT THINK IT WILL HAVE THAT MARKS.
ANY WAY MOST OF THE PRINCIPLES OF PRODUCTION OF X RAYS, CT SCANNING, [GENERATION AND USE OF ULTRASOUND], MAGNETIC RESONANCE ARE ALL THERE IN THE PAST PAPERS....HAVE A LOOK
and for Acoustic impedance.... the problems that may come will mostly be based on calculations so memorise the eqns
1. M/J 2008 qn10
2. Acoustic impedance is the product of the density (ρ) of the medium and the speed (c) of the medium.
3. Non invasive techniques are designed to present a much smaller risk than surgery and are in general far less traumatic for the patient
4.
•Reduces the gain,
•Increases the bandwidth,
•Causes less distortion of the output
•Greater operating stability
SORRY FOR NOT GIVING U THE FULL ANSWERS BECAUSE THAT'S ALL I COULD GET.
SOME QNS CAN COME BUT I DONT THINK IT WILL HAVE THAT MARKS.
ANY WAY MOST OF THE PRINCIPLES OF PRODUCTION OF X RAYS, CT SCANNING, [GENERATION AND USE OF ULTRASOUND], MAGNETIC RESONANCE ARE ALL THERE IN THE PAST PAPERS....HAVE A LOOK
and for Acoustic impedance.... the problems that may come will mostly be based on calculations so memorise the eqns
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Thankyou 
FOR PHYSICS ASLEVEL PAPER 33
what we hav been practicing is the electricity one with beads in place of resistors.its very simple..and ya in the oscillation one we will be having a cylinder instead of a pendulam bob..
i doubt anything concerning magnets or diodes on A2 level will come for As practicals, hmm, they might just be giving diode as just another component of the circuit system, in past years there were things like that, but the procedure is still the same, you will just have to either measure current, volt etc. and draw the graph, and by the way it will be helpful to review the graphs for diodes. before going for exam.
YOU WILL NEED
1.retort stand.
2.bob/cylinder
3.stopwatch.
4.thread
5.multimeters
6.batteries
7.clamps.
8.resistors.
what we hav been practicing is the electricity one with beads in place of resistors.its very simple..and ya in the oscillation one we will be having a cylinder instead of a pendulam bob..
i doubt anything concerning magnets or diodes on A2 level will come for As practicals, hmm, they might just be giving diode as just another component of the circuit system, in past years there were things like that, but the procedure is still the same, you will just have to either measure current, volt etc. and draw the graph, and by the way it will be helpful to review the graphs for diodes. before going for exam.
YOU WILL NEED
1.retort stand.
2.bob/cylinder
3.stopwatch.
4.thread
5.multimeters
6.batteries
7.clamps.
8.resistors.