How many helium balloons would it take to lift adult weighing about? 11 stones on the ground.
STP = 1 atmosphere and temperature of 0 degrees centigrade.
MMR is the relative mass molecule.
The air is composed of approximately 80% nitrogen and 20% oxygen.
RMM average air = 0.8X14 + 0.2X16 = 14.4.
At STP 22.5 liters of air has a mass of about 14.4 grams.
At STP 22.5 liters of helium has a mass of about 4 grams.
The lift of 22.4 liters of helium should be about 22.5 - 4 = 18.5 grams, if one ignores the weight of the balls.
Suppose a ball has a diameter of 30 cm and the radius = 15 cm.
Suppose the ball is spherical.
Stealing a ball = (4 / 3) XpiX (radius ^ 3)
= 14,137 cubic centimeters
= 1.4137 liters.
Number of balls in 22.4 liters 22.4/1.4137 = 18.5 grams = 15.8 balls.
A balloon provides a lift of 18.5/15.8 = 1.171 grams grams.
11 stone = 11x14 = 154 pounds = 154/2.204 = 69.87 lbs kg kg = 69,870 grams
No balloons
= 69870/1.171
= 59,669 balloons.
Balloons = approximately 60,000. However, I did not include the weight of the ball and chain to join them in person.
Answer: Many more than 60,000 balloons.
(Educated Guess: 120,000 balloons using the lighter 'string' easily accessible - such as nylon fishing line, thin)
What is the adult weight. Take the subway Jared, for example. Its weight pre-sub, it should perhaps be more than 2000 balls, but if you talk about the post-SB Jared, so I would say maybe a hundred. LOL
In fact, I have no idea!
On the science program, forgot the name. The cool one:) It took 1000 to raise a child of 4 years.
So, like,
a great guy =]
A very big one
Posted on March 12, 2010.
