Part IV. The Pulsar In 1967, astronomers discovered an unusual signal among thei

Question

Part IV. The Pulsar In 1967, astronomers discovered an unusual signal among their observations: a regular pulsation. Some conjectured that this signal was an extraterrestrial intelligent civilizations. Later it was determined that this pulsar was actually a very rapidly rotating star that sent out pulses of radiation with every revolution. Since that time many other pulsars have been observed. A sample signal from a particular pulsar is shown below as measured from a telescope here on Earth. Suppose that this pulsar signal was determined through other observations to be headed away from Earth with a speed of 0.800c. A spaceship is sent toward the pulsar with a speed of 0.950c relative to the Earth. At what rate does an observer on the spacecraft see the pulses emitted? 0 0.2 0.4 0.6 0.8

Explanation / Answer

As speed of any electro magnetic wave is constant with respect to any inertial frame of reference the person in second space ship will also receive same pulse rate. Because both space ships are inertial frames(constant speed)

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