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 m³.The density of air is 1.3 kg/m³.
-What is the average density of the balloon?
A)0.2 kg/m³
B)0.4 kg/m³
C)0.8 kg/m³
D)1.0 kg/m³
E)1.2 kg/m³

Question

Quizplus · Accepted Answer

The average density of the balloon will depend on the density of the enclosed gas, which is not given in the problem. However, assuming that the gas is lighter than air (as is the case with helium), we can infer that the average density of the balloon will be less than 1.3 kg/m³ (the density of air). Therefore, we can eliminate choices C, D, and E.

To calculate the actual density of the balloon, we can use the formula:

Density = Mass / Volume

Density = (2.0 kg) / (5.0 m³)
Density = 0.4 kg/m³

Therefore, the best choice is B, 0.4 kg/m³.

A Balloon Is Released from a Tall Building