If a Galaxy Is Receding from Us at 0

question 15

Multiple Choice

If a galaxy is receding from us at 0.10c. Use Hubble's law to estimate the distance to this galaxy if the Hubble constant is 22 km/s per million light-years. (c = 3.00 × 10⁸ m/s, 1 ly = 9.461 × 10¹⁵ m, 1 y = 3.156 × 10⁷ s)

• A) 1.4 × 10⁹ ly
• B) 6.6 × 10⁵ ly
• C) 6.6 × 10⁵ Mly
• D) 2.2 Mly
• E) 1.4 × 10⁷ Mly

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