Internal energy, heat transfer (conduction, convection, radiation), and calculating the amount of heat (

It sounds like you're looking for help with a physics assignment based on the 8th-grade textbook by . Since you didn't specify a particular exercise or page number, I've outlined the core topics covered in this curriculum to help you identify what you need: Key Topics in Purysheva's 8th Grade Physics

Melting, evaporation, and boiling (

Write the general formula first, then substitute the numbers.

Reflection and refraction of light, and the basics of lenses. How to complete your "Paper" (Homework)