A Balloon Is Released from a Tall Building

question 13

Multiple Choice

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

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Definitions:

3.5 Hours

A period of time equal to three and a half hours or 210 minutes.

Subcoerulear Nucleus

A region in the brainstem involved in pain modulation and the regulation of autonomic and arousal responses.

Medial Pontine Reticular Formation

A complex network of neurons located in the pons part of the brainstem, involved in regulating various autonomic functions and states of consciousness.

Atonia

A state of muscle relaxation occurring during REM (Rapid Eye Movement) sleep, preventing the sleeper from acting out dreams.