Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
The density of a lithium nucleus
(
A
=
7
)
(A = 7)
(
A
=
7
)
is compared with that of a lead nucleus
(
A
=
208
)
(A = 208)
(
A
=
208
)
. The ratio
ρ
Li
/
ρ
Pb
\rho_{\text{Li}}/\rho_{\text{Pb}}
ρ
Li
/
ρ
Pb
is closest to a)
0.0337
(
=
7
208
)
0.0337\;(=\dfrac{7}{208})
0.0337
(
=
208
7
)
b)
3.1
(
=
(
208
/
7
)
1
/
3
)
3.1\;(=(208/7)^{1/3})
3.1
(
=
(
208/7
)
1/3
)
c)
1
1
1
d)
0.32
(
=
(
7
/
208
)
1
/
3
)
0.32\;(=(7/208)^{1/3})
0.32
(
=
(
7/208
)
1/3
)
Browse the problem library