Midpoint of the hypotenuse is 20.3 v. when the charge qa is removed, the potential at the midpoint becomes 11.5 v. when, instead, the charge qb is removed (qa and qc both in place), the potential at the midpoint becomes 16.9 v. what is the potential at the midpoint if only the charge qc is removed from the array of charge

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.

b flags hope this

it's analogy i just took this quiz

i think the first one, it makes the most sense.