In Cosmology, the Constant That Is Intimately Related to the Present

question 86

Multiple Choice

In cosmology, the constant that is intimately related to the present "age" of the universe is

• A) the constant in Wien's law of radiation.
• B) 1/G, the inverse of the universal gravitational constant.
• C) the Planck time, 10^-43 s, in which space and time came into existence.
• D) 1/H₀, the inverse of the Hubble constant of expansion.

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Definitions:

Expected Inflation

The rate at which prices for goods and services are anticipated to rise over a future period, as forecasted by economists or financial markets.

Relative Purchasing Power Parity

A theory in economics that suggests that changes in the exchange rates between currencies are in direct proportion to changes in the countries' price levels.

Expected Inflation

The predicted average rate at which prices of goods and services rise over time, eroding purchasing power.

Relative Purchasing Power Parity

An economic theory that suggests exchange rates between currencies adjust to negate changes in purchasing power.