OpenStax College Physics, Chapter 13, Problem 25 (Problems & Exercises)
Up, Up and Away – Teacher's Notes
Hot Air Balloons - Calculate Lifting Weights
Lecture 2.7 - Hot Air Balloon Lab Calculations - YouTube
Near-Space Balloon Burst Altitude Calculator - Science — Launch with Us
Hot Air Balloon Lift Calculator
How to Send a Gopro and Weather Balloon to Near Space
Hot Air Balloons - Calculate Lifting Weights
What must the radius of a balloon filled with helium be in order to lift a load of 100 kg (including the mass of the balloon)? The density of helium is 0.18
Balloon Charts & Formulas | ConwinOnline
The Very Best Balloon Blog: Helium - A little bit of what you need to know as a balloon professional Part 2.
How Many Helium Balloons It Takes to Lift Anything | IE
How to Calculate How Many Helium Balloons David Blaine Needed | WIRED
Everyday life Calculators
Hot Air Balloon - Lift Off and Rise - YouTube
How Many Helium Balloons It Takes to Lift Anything | IE
Balloons – How big of a helium tank do I need?
How Many Regular Helium Balloons Would It Take to Lift Someone? | HowStuffWorks
Helium Balloons Calculator
Balloon Performance Calculator
How to Calculate How Many Helium Balloons David Blaine Needed | WIRED
How many balloons would it take to float Batman's house? - CNET