Astronaut A is moving away from Astronaut Bat half the speed of light. Astronaut A turns on and off a laser so that the beam is on for 1.00s as measured by Astronaut A. a. How fast is the light moving in the reference frame of Astronaut B? b. How much time is the beam on as measured by Astronaut B? C. The laser emits a wavelength of 635nm as seen in the reference frame of Astronaut A. What wavelength is observed in the reference frame of Astronaut B?
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- A particle is moving at a speed of 0.925c and travels from one end of a 50 m long Physics lab to the other. How long is the lab if measured when moving with the particle? A. 132 m B. 19 m C. 16 m D. 50 m E. 149 mFind the kinetic energy of the objects in the scenarios. A. A cosmic pion of mass 140 MeV/?2140 MeV/c2 flies through outer space at a speed of 9.61×103 km/s9.61×103 km/s. See the hint for help converting MeV/?2MeV/c2 to kg.8. The spaceship which is measured to be 50 m long by the captain. When the spaceship past a space dock at 0.5c, space dock personnel measure the rocket ship to be 43.3 m long. What is the proper length? A. 13.3 m B. 43.3 m C. 50.0 m D. 93.3 m
- Which of the following is true about the time measured during an event by a clock that is traveling with an astronaut in a space craft moving at relativistic speed and an observer who is observing the clock on earth? A. The clock measures proper time in the space craft and observer on earth will measure longer time than the astronaut. B. The clock measures proper time in the space craft and observer on earth will measure a shorter time than the astronaut. C. The clock measures proper time on earth and the astronaut in the space craft will observe a longer time. D. The clock measures proper time on earth and the astronaut in the space craft will observe a shorter time. E. The clock (time) never changes; therefore, both astronaut and observer of earth can measure time accurately irrespective of their location.2. A ladder 5.50 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, the top of the ladder is 4.79 m above the floor. The spaceship moves past the Earth with a speed of 0.95c in a direction parallel to the floor of the ship. What is the length of the ladder as seen by an observer on Earth? m1. A rocket flies toward the earth at c, and the captain shines a laser light beam in the forward direction. Which of the follow- ing statements about the speed of this light are correct? (There may be more than one correct answer.) A. The captain measures speed c for the light. B. An observer on earth measures speed e for the light. C. An observer on earth measures speed c for the light. D. The captain measures speed c for the light.
- 3. Please answer these questions well explained. Scientists observe an electron travelling at 0.98 c. A. Calculates the total energy of the electron, in MeV, as measured by the scientists. B. Determines the kinetic energy of the electron, in MeV, as measured by the Scientists.9. As the spaceship in Number 8 passes by the space dock, the ship's captain flashes a flashlight at 1.00 s interval as measured by space-dock personnel. How often does the flashlight flash relative to the captain? A. Every 0.87 s B. Every 1.15 s C. Every 1.00 s D. cannot determineRace rocket driver Suzy is heading down the final straightaway, approaching the finish line at 1.0 x 108 m/s. Her fans, at the finish line straight ahead, are shooting laser beams toward her (but not into her eyes). The speed of light is 3.0 x 108 m/s. How fast are the light waves approaching in Suzy's reference frame? 3. a) Light waves do not travel in Suzy's frame. b) 1.0 x 10² m/s c) 3.0 x 108 m/s d) 4.0 x 10² m/s
- You are in the Enterprise traveling at half the speed of light (v = 0.5c), heading toward a Borg spaceship. You fire your phasers and you see the light waves leaving your ship at the speed of light c = 3x108 m/s toward the Borg. With what speed do the Borg see the phaser blasts approaching their ship? a) less than .5c b) 0.5c c) c d) 1.5c e) more than 2cYou are standing still on a spacecraft that is traveling toward the Sun and 0.25c. 1- How fast are you moving relative to a person that is on Earth observing your spacecraft's motion? 2- You get out your radar gun and point it at the Sun. What speed do you measure for sunlight, given that your spacecraft is traveling toward the Sun at 0.25 c? 3- At what speed, relative to c, do relativistic effects become significant?Shannon observes two light pulses to be emitted from the same location, but separated in time by 1.5μs. Kimmie observes the emission of the same two pulses to be separated in time by 2.5μs. a. How fast is Kimmie moving relative to Shannon? b. According to Kimmie. what is the separation in space of the two pulses?