- #1
NeRdHeRd
- 12
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Homework Statement
Can anyone help me with this problem?
A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.0 m^3. The density of air is 1.3 kg/m^3. What is the average density of the balloon?
2. The attempt at a solution
MY ATTEMPT:
density = mass/volume = 2/5 = .4 This is the density of the balloon and gas.
I'm tempted to leave this answer as it is but it just doesn't seem right.
I thought if I added the density of the air to the density of the balloon and then divided by two I would get and average.
EX. 1.3 + 0.4 = 1.7... 1.7/2 = 0.85 kg/m^3
Does this seem logical to you or are there some steps that I'm missing?