1. Reaction time estimation, renewable energy sources, and factors affecting braking distance. 2. Radioactive decay, stopping distance calculations, and wave frequency determination. 3. Nuclear fusion processes, gravitational forces in the Sun, and planetary life cycles. 4. Efficiency in lifting mechanisms, lubrication effects on efficiency, and crane energy calculations. 5. Sound wave properties, frequency-wavelength relationships, and amplitude variations. 6. Radioactive contamination risks, decay equations, and power generation using Pu-238.