Recent content by pbbock

Thanks for your replies. The explanation for question one of this series did confirm that the helium-filled balloon would sink in helium. What was disappointing was that their explanation was simply that it had negative buoyancy. They didn't explain why. Like you all, my students and I...

While reviewing the Archimedes Principle with my AP students using ConcepTest questions from the Wilson, Buffa, Lou text I came across an answer that I believe is incorrect. The question was the second question in a series of questions about a helium filled balloon. The first question asked...