If the Stars at the Turnoff Point of a Cluster

question 46

Multiple Choice

If the stars at the turnoff point of a cluster have a mass of 3 ,what is the age of the cluster?

• A) 3.0*10¹⁰ years
• B) 3.3*10⁹ years
• C) 6.4*10⁸ years
• D) 1.6*10¹¹ years
• E) The age of a star cluster can not be determined from the mass of stars at the turnoff point.

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Definitions:

Trial Balance

A bookkeeping worksheet in which the balances of all ledgers are compiled into debit and credit account column totals that are equal.

Uncollectable Account

A debt or receivable that is considered to be uncollectible from a debtor, often because it is overdue or the debtor is unable to pay.

Collection Agency

An enterprise that seeks to collect payments from individuals or businesses on outstanding debts.

Pegboard System

A bookkeeping system that uses a lightweight board with pegs on which forms can be stacked, allowing each transaction to be entered and recorded on four different bookkeeping forms at once; also called the one-write system.