9702 P5

[B2K]

how the graphs with error bars are to be drawn ? Plz attach an image if any1 if u have it

 

[princesszahra]

chk out the statistics for phy text books
the book that is endrosed by cambridge

 

[madan159]

please give me of Q.No.1 and diagram of physics p5

 

[destined007]

Question 1
Planning (15 marks)
Defining the problem (3 marks)
p is the independent variable OR vary p 1
f is the dependent variable OR measure f and p 1
Variable to be controlled 1
e.g. temperature, frequency of sound source
Methods of data collection (5 marks)
Workable arrangement 2
Should include container, source of sound, pump, microphone, CRO
Doubtful arrangement, poor diagram or one missing detail scores one mark
Method of varying p 1
e.g. use of pump to remove air or valve to allow air in
Method of measuring p 1
e.g. Bourdon gauge/pressure gauge/manometer
Method of measuring f 1
Should include reference to CRO timebase and f = 1/period
Method of analysis (2 marks)
Plot f against p
2
1
Equation is correct if graph is a straight line through the origin 1
Safety considerations (1 mark)
Safety precaution, e.g. screen/goggles/fuses 1
Additional detail (4 marks)
Additional details 4
Relevant points might include:
Second variable to be controlled
Method of controlling variables
Specified sound source (e.g. electric bell/buzzer/speaker)
Use of signal generator with speaker
Difficulty of detecting quiet sounds at low pressures
Using CRO y-sensitivity to adjust for sound levels
Need to seal points where wires pass through bell jar
Monitor temperature with thermometer

 

[madan159]

what to do to get A in physics P5

 

[destined007]

Practice past papers. Look at the mark schemes. That way you will know what to write to gain marks.

 

[madan159]

how to use hall probe, while measuring B,in a electric circuit.