Stellar system Q1 moves away from us at a speed of 0.800c. Stellar system Q2, which lies in the same direction in space but is closer to us, moves away from us at speed 0.400c.What multiple of c gives the speed of Q2 as measured by an observer in the reference frame of Q1?

Q: Suppose a particle called a kaon is created by cosmic radiation (high-energy protons of unknown ori…

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A: a. t=dv=60×103 m0.9999×3×108 ms=2.0002×10-4s b. ∆tmuon=∆tearth1-vc2            =2.0002×10-4…

Q: I need help on question 8?

A: Question no 8

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A: thank you

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A: