1. Energy and Power – Measuring energy efficiency with Sankey diagrams; calculating wasted energy; improving energy efficiency in vacuum cleaners and vehicles. 2. Electricity and Circuits – Resistance calculations; current and power in electrical devices; charge flow and energy transfer in circuits. 3. Forces and Motion – Newton’s laws applications; acceleration and kinetic energy calculations; forces in springs and levers. 4. Thermal and Energy Transfer – Insulation effects on cooling rates; predicting which materials retain heat best; improving experimental reproducibility. 5. Nuclear Physics – Nuclear fission and fusion processes; energy release mechanisms; effects of radiation on living organisms. 6. Experimental Methods and Data Analysis – Identifying errors in experiments; improving measurement accuracy; graphical interpretation of scientific data.