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CBSE Class 10 Answered

what is the speed of slow moving neutron
Asked by pal581185 | 12 Apr, 2020, 09:27: PM
answered-by-expert Expert Answer
Slow moving neutron is a neutron having kinetic energy less than 1 eV. The kinetic enrgy of this neutron is about 0.025 eV or 4 ×10-21 J.
K.E  =1/2 x mv2 
mass of neutron = 1.67 × 10-21 kg
By substituting values and solving we get, 
v  = 2.18 × 103 m/s or 2.18 km/s
 
Thus, the speed of slow moving neutron is abot 2.19 km/s
Answered by Shiwani Sawant | 13 Apr, 2020, 12:21: PM
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