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

question 108

Multiple Choice

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

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

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Definitions:

Real Rate

The interest rate adjusted for inflation, reflecting the true cost of borrowing or real yield on an investment.

Inflation Rate

The rate at which the general level of prices for goods and services is rising, and, subsequently, eroding purchasing power.

Spot Rate

The current market price at which a particular currency can be bought or sold for immediate delivery.

Relative PPP

Relative Purchasing Power Parity, a theory which states that exchange rates between currencies change to compensate for inflation rate differences among countries.