Why Did Einstein Introduce His Cosmological Constant into the Original

question 49

Multiple Choice

Why did Einstein introduce his cosmological constant into the original equations for general relativity?

• A) The constant was necessary to make the solutions describe an expanding universe.
• B) Experimental evidence at this time (before Hubble) suggested a static universe, and this constant was required to produce static solutions.
• C) The constant represented the acceleration of gravity near Earth's surface, and it was necessary to make the nonrelativistic limit of the solutions compatible with Newton's results.
• D) The constant represented the speed of light, and its inclusion was necessary to produce solutions that were compatible with the postulates of special relativity.

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Definitions:

Net Realizable Value

The amount (Accounts Receivable – Allowance for Doubtful Accounts) that is expected to be collected.

Gross Accounts Receivable

The total amount owed to a company by its customers for goods or services delivered on credit before any deductions for returns or bad debts.

Bad Debts Expense

The cost associated with accounts receivable that are not expected to be collected.

Contra Asset

An asset account where its balance is opposite of the normal balance, used to offset the balance of a related account, such as allowance for doubtful accounts offsetting accounts receivable.