The Total Mass of the Pair of Stars in Spectroscopic

question 38

Multiple Choice

The total mass of the pair of stars in spectroscopic binaries are difficult to estimate because

• A)we can't measure the radial velocities of each star in the system.
• B)we can't see the shape or tilt of the orbit.
• C)we can't find the diameters of the stars.
• D)we can't determine the luminosities of the stars.
• E)the Doppler shift is not measurable.

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Definitions:

Tax Deductions

Expenses that can be subtracted from gross income to reduce the total amount of income subject to taxation, effectively lowering the overall tax liability.

Diminishing Value

A reduction in the worth of an asset over time, often due to wear and tear or obsolescence.

After-tax Cash Inflow

The net amount of cash generated from an investment after deducting all applicable taxes.

Income Tax Rate

The percentage of an individual's or corporation's income that is paid to the government as tax.