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Physics
Physics
Problem
Assume Earth’s orbit is a circle of radius
1
AU
=
1.5
×
10
8
km
1\,\text{AU}=1.5\times10^{8}\,\text{km}
1
AU
=
1.5
×
1
0
8
km
and its orbital period is
365
days
365\,\text{days}
365
days
. What is the approximate area swept out by the radius vector in one day? a)
6.2
×
10
13
km
2
6.2\times10^{13}\,\text{km}^2
6.2
×
1
0
13
km
2
b)
2.0
×
10
14
km
2
2.0\times10^{14}\,\text{km}^2
2.0
×
1
0
14
km
2
c)
8.1
×
10
12
km
2
8.1\times10^{12}\,\text{km}^2
8.1
×
1
0
12
km
2
d)
1.1
×
10
16
km
2
1.1\times10^{16}\,\text{km}^2
1.1
×
1
0
16
km
2
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