The Population in a Certain Country Was 10,900,000 in 1990

question 102

Multiple Choice

The population in a certain country was 10,900,000 in 1990 and 17,100,000 in 2005. The doubling time of the population is:

• A) 52.7 years
• B) 53.6 years
• C) 31.3 years
• D) 23.1 years
• E) none of the above

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Definitions:

Coupling Device

A mechanical or electromagnetic component used to connect two shafts together at their ends for the purpose of transmitting power.

Standards Agency

An organization that develops, maintains, and promotes technical standards to ensure quality, safety, and efficiency.

Rated Voltage

The maximum voltage at which an electrical component can operate safely and efficiently over its lifespan.