A Supernova Remnant Is Expanding in Radius at the Rate

question 40

Multiple Choice

A supernova remnant is expanding in radius at the rate of 0.5 seconds of arc per year.Doppler shifts show that the velocity of expansion is 5700 km/sec.How far away is the supernova remnant?

• A) 1140 pc
• B) 11,400 km
• C) 5700 pc
• D) 24 pc
• E) 2400 pc

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Definitions:

Net Present Value

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