Type Ia Supernovae Have a Peak Luminosity of 3

question 83

Multiple Choice

Type Ia supernovae have a peak luminosity of 3.7 x10³⁶ W.If you discover a Type Ia supernovae in a distant galaxy that has a measured brightness of 9.5 x10^-17 W/m², then how far away is this galaxy? Note that 1 Mpc = 3.1 x10²² m.

• A) 0.3 Mpc
• B) 40 Mpc
• C) 1,200 Mpc
• D) 1,800 Mpc
• E) 3,500 Mpc

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