Welcome to the 2021-22 AH Physics course. Another year, another journey together. I hope you feel that this site meets your requirements and that you can find the materials that you need.

Check out MrStewart’s YouTube channel for some great clear explanations from this course.

Using John Sharkey’s Flash Learning this video covers the required Virtual CfE Advanced Higher Physics Equations. NB there are some updates to equations since this material was produced.

Using John Sharkey’s Flash Learning Virtual CfE Advanced Higher Physics these videos cover all of the unit Rotational Motion and Astrophysics. Note there have been a few changes to the Course Specifications since these were produced.

Here are some of the recordings from Virtual Flash Learning for the Rotational Motion Section. Turn off the volume if you dont want to hear from me.

AH Kinematic Relationships using the Virtual Physics

Angular Momentum-

This one has audio but you can switch it off.

Angular Motion

Rotational Dynamics

Gravitation

Space and Time

Stellar Physics

Note in the Stellar Physics video the equation for Apparent Brightness has now been changed see below

An adaptation of Tom Balanowski’s notes by Mr Bailey. This is a useful guide to teachers preparing students for their AH Physics Project. PLANNING is the KEY.

If you are not familiar with Excel can I recommend you spending a bit of time looking over the post in the BGE section (link below). I’ll add a further advanced part for you below.

Other packages are available and some are more robust such as R but I am not sure whether I will introduce that to you now.

check out the prefixes you need. Notice anything different?

I am grateful to Ms K Ward from George Heriot’s School for trawling through the new and old curriculum and recording the changes. Thanks also for allowing me to reproduce it here.

Assessment

Old assessment: 100 mark question paper, 30 mark project, plus pass all the units

New assessment: 155 mark question paper, scaled to 120, 40 mark project (hence project is 25%)

Changes to content:

The content is no longer divided into ‘mandatory course key areas’, ‘suggested learning activities’, and ‘exemplification of key areas’. There is simply a list of the course contents.

Where the wording has changed but I don’t see any real difference, I have said ‘no change’.

RMA

Kinematic relationships – no change

Angular motion – derivation of centripetal acceleration equation is gone

Rotational dynamics – no change

Gravitation

– ‘Conversion between astronomical units (AU) and metres and between light-years (ly) and metres’ – is new

– ‘Consideration of the energy required by a satellite to move from one orbit to another’ – is gone

General Relativity

– ‘Knowledge that the escape velocity from the event horizon of a black hole is equal to the speed of light’ – is new

Stellar physics

Specific example of a p-p chain is now given

Hertzprung-Russell section is rewritten more clearly.

Quanta and Waves

Introduction to quantum theory – no change

Particles from space

– ‘Knowledge of the interaction of the solar wind with Earth’s magnetic field’ – is gone. New document only mentions composition of solar wind. Helical motion of charged particles is still there though, so it might not really matter.

Simple harmonic motion (SHM)– no change

Waves – no change

Interference

Relationship for interference due to division of amplitude is now specified, opd=mλ or (m+1/2) λ where m=0,1,2…

Polarisation – no change

Electromagnetism

Fields

– ‘Knowledge of Millikan’s experimental method for determining the charge on an electron’ – this was in ‘exemplification’ before but is now specifically required knowledge

– ‘Comparison of gravitational, electrostatic, magnetic, and nuclear forces in terms of their relative strength and range’ – the words in bold are new

Circuits

– ‘Knowledge that, in an RC circuit, an uncharged capacitor can be considered to be fully

charged after a time approximately equal to 5τ. Knowledge that, in an RC circuit, a fully charged capacitor can be considered to be fully discharged after a time approximately equal to 5τ.’ – is new

Electromagnetic radiation– no change

Uncertainties

Knowledge and use of appropriate units, prefixes and scientific notation

Data analysis

– ‘Absolute uncertainty should normally be rounded to one significant figure. In some instances, a second significant figure may be retained.’ – the words in bold are new. It does not specify the instances in which a second figure may be retained.

– ‘Knowledge that, when uncertainties in a single measurement are combined, an uncertainty can be ignored if it is less than one third of one of the other uncertainties in the measurement’ – is new

– ‘Knowledge that, when uncertainties in measured values are combined, a fractional/percentage uncertainty in a measured value can be ignored if it is less than one third of the fractional/percentage uncertainty in another measured value’ – is new

– The equation for the uncertainty in a value raised to a power is now given:

Evaluation and significance of experimental uncertainties

The AH today were working in 3 groups to research via practicals and notes about SHM. The task is given below. Well done to Morford and Hodgson who created the following from their practical, with very little assistance. Their results were so good I thought I’d share them.

Mr Morford wrote “These graphs are from our recent experiment to determine the effect of damping on an oscillating mass. A mass was hung from a spring over an Alba Ranger ultrasound device. We then analysed our measurements using excel and graphed our results to find the decay due to damping.”

Morford & Hodgson (2019)

This was the task for the class and my thanks to the IoP for their Practical Physics lessons and to the other places referenced for some great practical techniques. I will neaten this post later, but I promised Morford and Hodgson that I would post tonight!

Hopefully I can collate the rest of the groups information soon.

Despite Covid-19 the intrepid AH students have been showing damping with a pendulum bob and tracker. The original movie has still to be analysed by our friends from Annan

Now if we can add Atwal, Burns, Carson and Morrin’s tracker we can have a full set for 2020 and you can look back with fondness at your time in AH, despite all the distancing.

Investigating a mass-on-spring
oscillator

Demonstration

A mass suspended on a spring
will oscillate after being displaced. The period of oscillation is affected by
the amount of mass and the stiffness of the spring. This experiment allows the
period, displacement, velocity and acceleration to be investigated by
datalogging the output from a motion sensor. It is an example of simple
harmonic motion.

Analysis Measurement of period Period and Amplitude Observe that the period appears to be independent of amplitude.

Effect of mass A straight line is the usual result, showing that the period squared is proportional to the mass.

Velocity and acceleration A plot of the resulting data shows a ‘velocity vs. time’ graph. Note that the new graph is also sinusoidal. However, compared with the ‘distance vs. time’ graph, there is a phase difference – the velocity is a maximum when the displacement is zero, and vice versa.

A similar gradient calculation based on the ‘velocity vs. time’ graph yields an ‘acceleration vs. time’ graph. Comparing this with the original ‘distance vs. time’ graph shows a phase difference of 180°. This indicates that the acceleration is always opposite in direction to the displacement. Teaching notes

Aim: To find the force constant of a helical spring by plotting a graph between load and extension.

Aim: To find the effect of damping on an oscillating spring

Aim: To find the effect of mass on an oscillating spring

Aim: To use the formula for an oscillating spring to find m or k etc

Please complete notes for ALL of Kinematics and Angular Motion. Use the Traffic Light document to help you. Cover, calculus and the equations of motion definitions. Proving the angular motion equations, prove equation for central acceleration. Look at circular motion and cover banking, tension in circles, washing machine drums. pendulums. Hand these in Thurs Period 5.