Hanna, at rest in her spaceship which is moving past Earth at 0.800c, observes a neutron at rest relative to her spaceship decay into a proton, an electron and a neutrino. She notes that the total momentum, 
, of the decay products is zero after the decay. According to an observer on Earth, the magnitude of the total momentum of the decay products, 
, is
A. 0.
B. 0.600mn(0.800c)
C. 0.800mn(0.800c).
D. 1.00mn(0.800c).
E. 1.67mn(0.800c).
Answer: E
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a. I & II b. I & III c. II & III d. I, I, & III e. None of the other choices are correct.
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Fill in the blank(s) with correct word
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