A Hollow Steel Ball of Diameter 3

question 30

Multiple Choice

A hollow steel ball of diameter 3.0 m barely floats in water.What is the thickness of the wall of the ball? The density of iron is 7.87 g/cm³ and that of water is 1000 kg/m³.

• A) 6.6 cm
• B) 37 cm
• C) 131 cm
• D) 79 cm

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Definitions:

Inelastic

Describes a situation where a change in price leads to a relatively smaller change in the quantity demanded or supplied.

Remittances

Money sent by migrants back to their home countries, often to support family members financially.

GDP

Gross Domestic Product, the total market value of all final goods and services produced within a country in a specific time period.

Elasticity

In economics, elasticity measures how much the quantity demanded or supplied changes in response to a change in price or other factors.