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An astronaut is traveling in the space vehicle which has a speed of 0.500 c relative to Earth. The astronaut evaluates his pulse rate at 74.0 per minute. Signals produced by the astronaut's pulse are radioed to Earth when the vehicle is moving perpendicularly to a line that joins the vehicle with the Earth observer.

i) Determine the pulse rate which the Earth observer measure?

ii) Determine the pulse rate when the speed of the space vehicle was raised to 0.940c?

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