Term 1 Week 4

E = mc²

^Homework 

• Activity 12A Mass-Energy Equivalence, p.194
• Exercise 10 Modern Physics, p.189-198 - Workbook - This will be assessed.

Nuclear Reactions

E = Δmc²

Radioactive Isotopes

PhET Applications:

• Nuclear Fission https://phet.colorado.edu/en/simulation/legacy/nuclear-fission
• Alpha Decay https://phet.colorado.edu/en/simulation/legacy/alpha-decay
• Beta Decay: https://phet.colorado.edu/en/simulation/legacy/beta-decay
• Models of the Hygrogen Atom https://phet.colorado.edu/en/simulation/legacy/hydrogen-atom
• Photoelectric Effect https://phet.colorado.edu/en/simulation/legacy/photoelectric

Nuclear Fission

Nuclear Fusion

Nuclear Power Station

Term 1 Week 2

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

Homework: Activity 11B from your textbook