A spacecraft is traveling at 0.9c relative to earth. An astronaut's heart rate is measured on...

 

 

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A spacecraft is traveling at 0.9c relative to earth. An astronaut's heart rate is measured on the spacecraft at 70 beats/min. (a) What is the proper heart rate? (b) What is the heart rate measured by an observer able to view this heartbeat from the 'rest' frame of Earth? 4. The lifetime of a muon is 2.2 µs traversing the atmosphere at 0.98c (average) (a)What is the lifetime (Dt) of this unstable relativistic elementary particle viewed from the 'rest' reference frame of earth? (b) (What is the minimum energy (Heisenberg) uncertainty range (DE) of this unstable particle? A spacecraft is traveling at 0.9c relative to earth. An astronaut's heart rate is measured on the spacecraft at 70 beats/min. (a) What is the proper heart rate? (b) What is the heart rate measured by an observer able to view this heartbeat from the 'rest' frame of Earth? 4. The lifetime of a muon is 2.2 µs traversing the atmosphere at 0.98c (average) (a)What is the lifetime (Dt) of this unstable relativistic elementary particle viewed from the 'rest' reference frame of earth? (b) (What is the minimum energy (Heisenberg) uncertainty range (DE) of this unstable particle?

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Solution Here is the my Answer 1 a The proper heart rate is the heart rate measured in ... View the full answer