chap01, p01 015

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15. We convert meters to astronomical units, and seconds to minutes, using

1000 m

=

1 km

1 AU

=

1.50

× 10

8

km

60 s

=

1 min .

Thus, 3.0

× 10

8

m/s becomes



3.0

× 10

8

m

s

 

1 km

1000 m

 

AU

1.50

× 10

8

km

 

60 s

min



= 0.12 AU/min .


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