Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
The perihelion distance
r
p
r_p
r
p
of a planet in an elliptical orbit of semi-major axis
a
a
a
and eccentricity
e
e
e
is a)
a
(
1
+
e
)
a(1+e)
a
(
1
+
e
)
b)
a
(
1
−
e
2
)
a(1-e^{2})
a
(
1
−
e
2
)
c)
a
(
1
−
e
)
a(1-e)
a
(
1
−
e
)
d)
a
1
+
e
\dfrac{a}{1+e}
1
+
e
a
Browse the problem library