Week 9 Term 1 2024

  Homework:

• Ex 4A, p.100-102, C.O.M.
• Ex 4B, p.108-112, Momentum & C.O.M. in 1D
• Ex 4C, p.116-122, Momentum & C.O.M. in 2D
• Act 7A, p.87-88 Motion, Force and Energy
• Act 7B, p.91-92 Impulse
• Act 7C, p.95-96 Conservation of Momentum
• Act 7D, p.100-101 C.O.M.

Centre of Mass (C.O.M.)

Center of Mass - Science Theater 29

Center of Mass

PhET - Collision Lab - Momentum & C.O.M.

Centre of Mass + Momentum

Collision and C.O.M.

Momentum Collision in 2 Dimensions

Momentum in 2D Explained Graphically

How Hard Can You Hit a Golf Ball?

Week 4 Term 1 2024

 Homework:

• Activity 11A, p.188-189 Waves & Photons
• Activity 11B, p.192 Photoelectric Effect
• Exercise 5B, p.205-208 Photoelectric Effect
• Ex 5C, p.212-215 Photoelectric Effect
• Act 11C, p.196 Atomic Line Spectra
• Act 11D, p.200-201 Bohr Model of Hydrogen Atom
• Ex 5D, p.221-222 Atomic Models
• Ex 5E, p.228-230 Atomic Line Spectra
• Activity 12 A, p.194, Mass-Energy Equivalence
• Activity 12B, p.213-214, Nuclear Reactions

Nuclear Reaction E = mc²

Nuclear Chemistry Part 1

Nuclear Chemistry Part 2

Binding Energy per Nucleon

Binding Energy per Nucleon is a negative energy or a debt of energy. This is the amount of energy it would take to liberate a nucleon from the nucleus. This energy was originally radiated off when the nucleus formed.

The energy radiated off, the Binding energy, is lost energy and comes from mass that is lost by the nucleons. Mass per Nucleon shows what is left over once a bound nucleon has radiated away some of its mass.

A 'cheatsheet' on Binding Energy in nuclear physics

Nuclear binding energy Explained

How to solve a mass defect and binding energy problem

Binding Energy per Nucleon

Binding Energy, Fission and the Strong Nuclear Force

Fission:The breaking up of a larger nucleus into smaller daughter nuclei. Anything above Iron will radiate off energy.

Fusion:
The joining of smaller nuclei into a larger nucleus. Anything below Iron will radiate off energy.

Fission & Fusion

Fission

A 'cheatsheet' on Binding Energy in nuclear physics

Week 2 Term 1 2024

 

Homework:

• Activity 11A, p.188-189 Waves & Photons
• Activity 11B, p.192 Photoelectric Effect
• Exercise 5B, p.205-208 Photoelectric Effect
• Ex 5C, p.212-215 Photoelectric Effect
• Act 11C, p.183 Atomic Line Spectra
• Act 11D, p.188-189 Bohr Model of Hydrogen Atom
• Ex 5D, p.221-222 Atomic Models
• Ex 5E, p.228-230 Atomic Line Spectra

Photoelectric Effect

Photoelectric Effect A-Level Physics

Hertz and Lenards Observation of Photoelectric Effect

Photoelectric Effect

The concept of the Photoelectric Effect was introduced and how light modeled as a particle can explain this, while light modeled as a wave cannot.

The above video explains the Photoelectric Effect using a PhET application which I encourage you to use and experiment with.

This can be found at:

 https://phet.colorado.edu/en/simulation/photoelectric

Planck's Constant h = 6.63 x 10^-34 Js

Energy of a Photon E = hf

Threshold Frequency f_{o ,} the frequency of incident photons that have an energy equal to the work function of the metal

Work Function φ = energy required to free an electron from a specific metal (J)

Maximum Kinetic Energy, E_k,  of a freed electron by an incident photon:

E_k = hf - φ

Electron Volts to Joules Conversion

How Quantum Mechanics Saved Physics From Ovens

Planck's Constant - Sixty Symbols

How Quantum Mechanics Saved Physics From Ovens

Planck's Constant - Sixty Symbols

Bohr Model of the Hydrogen Atom - applet link

Atomic Line Spectra

Hydrogen Emission and Absorption Spectra for the visible Balmer Series

Atomic Line Spectra for Hydrogen

Emission & Absorption Lines for Hydrogen

Emission Lines for Hydrogen

Bohr Model of the Hydrogen Atom

 Bohr Model of the atom and Atomic Emission Spectra

Line Spectra & the Bohr Model

Emission and Absorption Line Spectra

Energy Levels

Bohr Model of the Hydrogen Atom

Atomic Spectroscopy Explained

Fine Structure Constant 1/137

Week 10 Term 3 2023 Part 3

 Homework

• Act 4A, p.56 Properties of Waves
• Act 5A, p.73-74 Standing Waves
• Act 5B, p.79-80 Music

• Ex 3D, p.75-79, Standing Waves and Music

• Act 6A, p.85-86 The Doppler Effect
• Ex 3E, p.81-84, Beats

• Ex 3A, p. 50-53 Basic Wave Properties

• Ex 3B, p. 57-63 Two Point Source Interference

• Ex 3C, p. 66-70 Multi Point Source Interference

Two Point Source Interference

n𝜆 = dsin(𝛳)

Double Slit App - Physics Classroom

Wave-Particle Duality Applied to the Double Slit Experiment

Diffraction Grating of White Light 

(Multi-Point Source Interference)

Green vs White Light Diffraction

Multiple Point Source Interference

Thin Film Interference

Thin Film Interference

Making Colour with Holes

Why Blue is so rare

Visible Spectrum

Week 10 Term 3 2023 Part 2

  Homework

• Act 4A, p.56 Properties of Waves
• Act 5A, p.73-74 Standing Waves
• Act 5B, p.79-80 Music

• Ex 3D, p.75-79, Standing Waves and Music

• Act 6A, p.85-86 The Doppler Effect
• Ex 3E, p.81-84, Beats

Doppler Effect

The Doppler Effect: what does motion do to waves?

Doppler Effect

Intro to the Doppler Effect

Doppler Effect Observed Frequency Equation

Sonic Boom

Doppler Shifting Song

Beats

two waves of a similar frequency (similar wavelength) superimpose to come in and out of phase causing constructive and deconstructive interference respectively. This causes a warbling/beat sound of frequency (fb) equal to the difference in respective frequencies

fb = | f1 - f2 |

Wave Beats

Easy Beats- Physics

Wine Glass Resonance in Slow Motion