P31_064 - 64. We use 1 ly = 9.46 1015 m, and use the symbol...

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64. We use 1 ly = 9 . 46 × 10 15 m, and use the symbol V for volume. U B = V u B = V B 2 2 µ 0 = (9 . 46 × 10 15 m) 3 (1 ×
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