A Balloon Inflated with Helium Gas (Density = 0

question 47

Multiple Choice

A balloon inflated with helium gas (density = 0.2 kg/m³) has a volume of 6 × 10^-³ m³.If the density of air is 1.3 kg/m³,what is the buoyant force exerted on the balloon?

• A)0.01 N
• B)0.08 N
• C)0.8 N
• D)1.3 N
• E)7.8 N

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Definitions:

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Just Noticeable Difference (jnd)

The minimum difference in stimulation that a person can detect 50% of the time.