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Physics
Physics
Problem
A neutron has a kinetic energy of
0.040
eV
0.040\,\text{eV}
0.040
eV
. Determine its wavelength. (Constants:
h
=
6.63
×
10
−
34
J
⋅
s
h = 6.63\times10^{-34}\,\text{J}\cdot\text{s}
h
=
6.63
×
1
0
−
34
J
⋅
s
,
m
n
=
1.67
×
10
−
27
kg
m_n = 1.67\times10^{-27}\,\text{kg}
m
n
=
1.67
×
1
0
−
27
kg
,
1
eV
=
1.60
×
10
−
19
J
1\,\text{eV} = 1.60\times10^{-19}\,\text{J}
1
eV
=
1.60
×
1
0
−
19
J
.)
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