Question

The order of magnitude of 20 AU in SI units is

Answer 1

Given : 20 AU

To Find :   order of magnitude of 20 AU in SI units

Explanation:

AU is  The astronomical unit

its a unit of length

Its approximately the distance  between  Earth and  Sun  

In Metric (SI) units ≈   1.5×10¹¹ m

1  AU  =   1.5×10¹¹ m

=> 20 AU = 20 * 1.5×10¹¹ m

=> 20 AU = 30×10¹¹ m

=> 20 AU = 3×10×10¹¹ m

=> 20 AU = 3 ×10¹² m

order of magnitude of 20 AU in SI units is​  12

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Answer 2

Explanation:

this the correct answer of the given question