5. A uranium-235 atom is moving forwards in a reactor with a velocity of 6.2 x 105 ms¹ when it undergoes spontaneous fission into a krypton (Kr) atom and a Barium (Ba) atom. The Kr atom is ejected backwards at a velocity of 3.3 x 10′ ms¹¹ whilst the Ba atom is projected forwards (atomic masses are: U = 235 u, Kr= 95 u and Ba = 140 u) U-235 6.2 x 105 ms ¹ 3.3 x 106 ms-1 A. 1.9 x 105 ms¹ Kr-95 Ba-140 The velocity of the barium atom after fission has occurred is about: B. 8.7 x 106 ms¹ C. 3.3 x 106 ms¹ V D. 2.6 x 106 ms.¹

Modern Physics
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ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
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Chapter2: Relativity Ii
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5.
A uranium-235 atom is moving forwards in a reactor with a velocity of
6.2 x 105 ms¹ when it undergoes spontaneous fission into a krypton (Kr)
atom and a Barium (Ba) atom. The Kr atom is ejected backwards at a
velocity of 3.3 x 106 ms¹ whilst the Ba atom is projected forwards (atomic
masses are:
U = 235 u, Kr= 95 u and Ba
U-235
6.2 x 10³ ms ¹
140 u)
A. 1.9 x 105 ms¯¹
3.3 x 105 ms ¹
B. 8.7 x 106 ms¯¹
Kr-95
The velocity of the barium atom after fission has occurred is about:
Ba-140
C. 3.3 x 106 ms¨¹ D. 2.6 x 106 ms™¹
Transcribed Image Text:5. A uranium-235 atom is moving forwards in a reactor with a velocity of 6.2 x 105 ms¹ when it undergoes spontaneous fission into a krypton (Kr) atom and a Barium (Ba) atom. The Kr atom is ejected backwards at a velocity of 3.3 x 106 ms¹ whilst the Ba atom is projected forwards (atomic masses are: U = 235 u, Kr= 95 u and Ba U-235 6.2 x 10³ ms ¹ 140 u) A. 1.9 x 105 ms¯¹ 3.3 x 105 ms ¹ B. 8.7 x 106 ms¯¹ Kr-95 The velocity of the barium atom after fission has occurred is about: Ba-140 C. 3.3 x 106 ms¨¹ D. 2.6 x 106 ms™¹
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