The questions in this quiz are suitable for GCSE physics students studying gravitational fields, weight, mass and gravitational field strength, how to calculate work done, free body diagrams and ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

When it comes to measuring the "hardness" of a material, most tests are distinctly low-tech and basically involve pressing a diamond tip into the surface and measuring the size of the dent produced.