Jack arranges to trigger two flashbulbs simultaneously, producing a big flash located at the origin of his reference frame and small flash at x = 30.0 km. An observer, Janet, moving at a speed of 0.25c in the positive x direction also views the flashes. i). Determine the time interval between them according to Janet. ii). Which flash does she say occurs first?
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- 4. Answer both of the following questions regarding Special Relativity: An astronaut leaves their twin behind on Earth and departs on a journey on a spacecraft travelling at a speed of 0.840c. After 40.0 years pass on Earth, the astronaut returns to Earth to find that their age is now different from their twin. How old is the astronaut upon returning to Earth? b) A muon, travelling at a speed of 0.999c, travels a distance of 10.0 km from the Earth's atmosphere to a muon detector on the surface of Earth (these distances are considered from Earth's perspective). How far does the muon travel from its own perspective?An astronaut travels to a star system 4.5 ly away at a speed of 0.90c. Assume that the time needed to accelerate and decelerate is negligible.a. How long does the journey take according to Mission Control on earth?b. How long does the journey take according to the astronaut?c. How much time elapses between the launch and the arrival of the first radio message from the astronaut saying that she has arrived?A person on earth notices a rocket approaching from the right at a speed of 0.75c and another rocket approaching from the left at 0.65c. What is the relative speed between the two rockets, as measured by a passenger on one of them? Number i Units VLE Earth's rest frame VRE
- A starship moves away from Mars at a speed of 0.75c relative to Mars. The starship launched a small rocket with the length of 13 m as measured by an observer on the starship. The small rocket moves in the same direction as the starship at a speed of 0.40c relative to the starship. i) Find the velocity of the small rocket relative to Mars.ii) Calculate the length of the small rocket as measured by an observer on Mars.At a speed of 0.90c, a spaceship travels to a star that is 9.0 ly distant.a. According to a scientist on earth, how long does the trip take?b. According to a scientist on the spaceship, how long does the trip take?c. According to the scientist on the spaceship, what is the distance traveled during the trip?d. At what speed do observers on the spaceship see the star approaching them?29 An experimenter arranges to trigger two flashbulbs simulta- neously, producing a big flash located at the origin of his reference frame and a small flash at x = 30.0 km. An observer moving at a speed of 0.707c in the positive direction of x also views the flashes. (a) What is the time interval between them according to her? (b) Which flash does she say occurs first?
- A spaceship leaves Earth traveling at 0.60 c. A second spaceship leaves the first at a speed of 0.90 c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving. Express your answer using two significant figures. ΑΣΦ 画 ? Submit Request Answer Part B Calculate the speed of the second ship with respect to Earth if it is fired directly backward toward Earth. Express your answer using two significant figures. ΑΣφ ? Submit Request Answer IIa) Galactus tries to destroy the Earth by stopping the Moon in its orbit. What effect would this have on the Moon and on the Earth? b) To prevent this, Flash (sorry, wrong company) runs to the Moon at a speed of 0.998c. From his point of view, the trip takes 0.126 s. How long does it take from our point of view on Earth?Lee and Leigh are twins. At their first birthday party, Lee is placed on a spaceship that travels away from the earth and back at a steady 0.866c. The spaceship eventually returns, landing in the swimming pool at Leigh’s eleventh birthday party. When Lee emerges from the ship, it is discovered thatA. He is still only 1 year old. B. He is 6 years old.C. He is also 11 years old. D. He is 21 years old.
- A spaceship moves past Earth with a speed of 0.808c. As it is passing, a person on Earth measures the spaceship's length to be 78.7 m. HINT (a) Determine the spaceship's proper length (in m). m (b) Determine the time (in s) required for the spaceship to pass a point on Earth as measured by a person on Earth. s (c) Determine the time (in s) required for the spaceship to pass a point on Earth as measured by an astronaut onboard the spaceship. sPlease do it co22. Newly sprouted sunflowers can grow at a rate of 0.75 cm per day. One sunflower is left on Earth, and another one is placed on a spacecraft traveling away from Earth at a speed of 0.94c. How tall is the sunflower on the spacecraft (as measure by someone on the spacecraft) when a person on Earth says theirs is 4.5 cm tall? How tall is the sunflower on the spacecraft (as measured by the person on Earth)? (Note: The direction of sunflower growth is the same as the direction that the spaceship is moving)