Misc: In 1932 Paul von ---------- elected first German president (Hitler was the second).?

Questions

what is the better known identity of minus 273.15 degrees celsius?

in what year was the first gnu c++ compiler released to the public?

a pugilist is a _________?

what boys name comes of the latin word for small?

who are jeffrey hyman, thomas erdelyi, douglas colvin, mark bell, and john cummings?