The answer to “A helium balloon hovers in midair, neither ascending nor descending. Is it in equilibrium? What forces act on it?” is broken down into a number of easy to follow steps, and 19 words. This full solution covers the following key subjects: ACT, Ascending, balloon, Descending, Equilibrium. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. The full step-by-step solution to problem: 3DQ from chapter: 4 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. University Physics was written by and is associated to the ISBN: 9780321675460. This textbook survival guide was created for the textbook: University Physics, edition: 13. Since the solution to 3DQ from 4 chapter was answered, more than 336 students have viewed the full step-by-step answer.