What is the dopaganger?

Why do electrons in a uniform magnetic field travel in a circular path? Would a triple beam balance work properly in outer space? What is cardbord? How big is 21 mm? how has the role of HRIM changed over time? How experimental method is better than correlational method? Why is a steaming iron called an iron? What did the human resistance use to spot the terminator? How many yards are in 250 inches? How can you show that sand does not take the shape of it's container? What is the Robug III? Is Safety common or proper? 4 letter word for Plum starting with G? How many feet are in three hundred and five meters? Which colors absorb heat faster and which colors absorb heat slower? What is 165 cm in feet x inches? What is aVariable? What is Turgidity give an example? How do you research in grepolis? As scientific knowledge increased and these discoveries were put to use which of these improved?