Answer:
23.38 years
Explanation:
Speed of Allison = 0.83 c = v
Time passed according to Allison = Δt = 29.5 years
Time dilation

For Nora 52.88 years would have passed
So, their age difference would be 52.88-29.5 = 23.38 years
Answer:
b is the answer.. hope it helps
Answer: I will say ''Law of conservation of energy.''
Explanation: Please tell me the answer you get!:)