Blog of Andrés Aravena

Homework 7

31 March 2023. Deadline: Tuesday, 11 April, 14:00. by Andrés Aravena, Ph.D.

In 2009 Pixar Animation studios released the movie “Up”. On it we see a house floating in the air, pulled up by many helium balloons. What volume of helium is needed to to make a house airborne?

To answer this question, you need to

  1. Estimate a range for the weight of the house.
  2. Calculate the weight of a ballon full of air and another full of Helium. You can assume that the balloon has a volume of one cubic meter (\(1m^3\)). This will give you how much weight can be lifted by such balloon.

You can assume that air and helium are ideal gases. The ideal gas law says that \(PV=nRT\) where

Deadline: Tuesday, 11 April, 14:00.

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