CCEA A2 Physics Practical Exam 5th May 2016Watch
What are your predictions and how are you preparing?
Exp 1 - measuring the angle between two suspended spings attatched to a mass, and the length of each as the masses increased.
Exp 2 - LDR - measuring the current, when placing a glass plate on top of the LDR (under a light source) until 5 glass plates were on top.
Lots of uncertainty questions.
3. 9 mark planning and design (ball bearing in a bowl - oscillations)
1)momentum of the 120kg rugby player
2)final v =3.45
3) with second player, stopping force doubles, hence V is halved?
Circular motion question
-Really not sure here to be honest. Said that max deformation occured at C (bottom point) and minimum at B? (Although I think now that it was A).
Simple Harmonic - a=w^2x, where w=2pi/T
A at fixed point =0
(Can't remember next one)
Nuclear density - 3m/4 pi Ro^3 using data given in question. For some reason I got it to be 4.5 or something.
Speed of the neutron anybody?
Mass defect worked out to give 28.8 MeV I think.
E=MC^2 where E=energy, mass defect, and light in a vccuum.
Basic description of boyle's law experiment.
For the tyre question, P1/T1 =P2/T2, got secondary pressure to be 1059Kpa I think.
Basic description of protactinium expt with GM tube.
Angular velocity of the gymnast?
For the alpha decay, subtracted 4 from mass number and 2 from atomic number to calculate 75 proton and 80-something neutrons. DT reaction stuff was good I thought. JET fusion question?