Y13 Kinetic theory of ideal gas

This is not in order. You will have to print them and put the jigsaw puzzle together.

Y13 capacitor discharge time constant

Answers to worksheet on the message site

Y13 Discharge of a capacitor experiment

Y12 Task for today

http://physicstwyford.blogspot.co.uk/2012/10/some-calcutations-on-forces-and-moving.html

Y12 a bouncing ball

The papers I marked were not good on this. Here are some notes I gave to the GCSE students. THey may be of use.

http://twyfordigcsephysics.blogspot.co.uk/2012/11/bouncing-ball-in-slow-mo.html

y13 energy stored in a capacitor

Y13 Q=VC

Y12 F= ma results

Force N	Acceleration (ms-2)
1	1.3
2	1.6
3	1.9
4	2.4
5	2.58
Number of Weights	Acceleration A to B ms-2
0	1.11
1	0.66
2	0.47
3	0.34
4	0.28
5	0.22
6	0.06

y12 Efficiency of a slope

SHM Calculations

1 The motion of a mass m is represented by the following expressions, where x is the displacement from a fixed point and k and a are positive constants. Which of these expressions represent simple harmonic motion?
A acceleration = kx, B velocity = kx, C acceleration = -kx

D velocity = -k(x² - a²), E velocity = k(a² x)
2 A mass of 0.01 kg is vibrating up and down with simple harmonic motion; its amplitude is 40mm, and the period is 2s. Find (i) the velocity and acceleration at the centre of oscillation, (ii) its acceleration 10mm from the centre, (iii) its kinetic energy at the centre. At what point is the potential energy a maximum?
3 In simple harmonic motion, a mass of 0.1kg has an amplitude of 10 mm. Calculate (i) the maximum velocity and (ii) the maximum force on the mass, if the period of the motion is p /2 s.
4 A vibrating mass of 0.06 kg has an amplitude of 0.08 m and a period of 4s. Find the velocity, acceleration and kinetic energy at the middle of the motion. What is the maximum value of the kinetic energy during the motion?
5 Draw sketches of the variations of (i) the kinetic energy, (ii) the potential energy, (iii) the total energy of a particle during one cycle of s.h.m. Account for the appearance of the graphs.

y12 Experiment on Impact Craters

 

Y13 Shm 2

y13 Permanent magnets

mag

y13 Magenetic fields due to current carriers

Y13 Fleming's Left Hand Rule. Magnetic flux density

y13