Via the Rotation Curve Method,we Can Estimate the Mass of Galaxies

question 34

Multiple Choice

Via the rotation curve method,we can estimate the mass of galaxies like M31 from

• A) Doppler shifts of material at the edge of its disk and computing P=2pi r /v.
• B) the distances of the Doppler shift points from its center
• C) both answers A and B.
• D) It is impossible to estimate the mass of M31.

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The date when the principal or nominal amount of a financial instrument, such as a bond or loan, becomes due and payable.

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The nominal or face value of a bond, stock, or coupon as stated by the issuer, typically not related to its market value.

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