One Important Aspect of the Study of Binary Star Systems

question 234

Multiple Choice

One important aspect of the study of binary star systems, as distinct from single stars, is that it provides a

• A) measurement of the masses of stars.
• B) measurement of the surface temperatures of stars.
• C) verification of the Doppler equation for wavelength shift of light from moving objects.
• D) measurement of the composition (abundances of elements) inside stars.

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Definitions:

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A liability that represents the amount of money owed on a mortgage loan, which the borrower must repay to the lender over time.

Credit Balance

A situation where the total credits in an account exceed the total debits; often indicates amounts owed by a business.

Debit Balance

A financial statement condition where debits exceed the amount of credits in an account.

Unsecured Loan

A loan that doesn't require any collateral and is based primarily on the borrower's creditworthiness and ability to repay.