A uranium-238 nucleus undergoes a radioactive decay, 238 U 234Th + 4He. The masses are approximately 238, 234 and 4 u, where u = the atomic mass unit. The U nucleus is initially at rest. Suppose the He nucleus has speed v. Then what is the kinetic energy of the Th nucleus? Parameters: u = 1.66 x 10-27 kg; v = 9.000×106 m/s. (in J)

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A uranium-238 nucleus undergoes a radioactive decay, 238 U
234Th + 4He.
The masses are approximately 238, 234 and 4 u, where u = the atomic mass unit.
The U nucleus is initially at rest. Suppose the He nucleus has speed v.
Then what is the kinetic energy of the Th nucleus?
Parameters:
]
u = 1.66 x 10-27 kg; v = 9.000×106 m/s.
(in J)
A: 2.942x10-15 B: 3.678x10-15 OC: 4.597x10-15
D: 5.746x10-15 OE: 7.183x10-15 F: 8.978x10-15 OG: 1.122x10-14 OH: 1.403x10-14
Transcribed Image Text:A uranium-238 nucleus undergoes a radioactive decay, 238 U 234Th + 4He. The masses are approximately 238, 234 and 4 u, where u = the atomic mass unit. The U nucleus is initially at rest. Suppose the He nucleus has speed v. Then what is the kinetic energy of the Th nucleus? Parameters: ] u = 1.66 x 10-27 kg; v = 9.000×106 m/s. (in J) A: 2.942x10-15 B: 3.678x10-15 OC: 4.597x10-15 D: 5.746x10-15 OE: 7.183x10-15 F: 8.978x10-15 OG: 1.122x10-14 OH: 1.403x10-14
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