2. Astronomers discover a planet orbiting around a star similar to our sun that is 20.0 lightyears away. How fast must a rocket ship go if the round trip is to take no longer than 40.0 years in time for the astronauts aboard? How much time will the trip take as measured on Earth?
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- 3) The new Earth-Pluto SuperShuttle boasts that it can take you between the two planets, which are 5.0 hours apart in 2.5 hours (according to your watch). What time interval is measured by people in the Earth-Pluto frame? What is the shuttle's speed?A spaceship travels from the Earth to a star 13 light years away (as measured in the Earth’s frame). An astronaut on the ship says that the trip takes 16 years. What is the speed of the ship relative to the earth in m/s?help on this please!!
- A rocket goes from 0 m/s to 40 meters per second squared in 8 s. A) after 41s, what is it's final speed in m/s? B) What length of time has passed for the rocket to reach a speed of 7100 m/s?A newly constructed spaceship has a length of 100.0 m (as measured in the rest frame). This spaceship departs the Earth, bound for a distant planet located a distance D = 50.0 light-years away from the Earth. It travels at a constant speed of v = 0.900c. Part A) As measured by Mission Control on Earth, how long does the journey take? Enter the numerical value in units of years. Part B) According to an astronaut on the spaceship, how long does the journey take? Enter the numerical value in units of years. Part C) As measured by Mission Control on Earth, what is the spaceship's apparent length? Enter the numerical value in SI units28. A neutron lives 900 s when at rest relative to an observer. How fast is the neutron moving relative to an observer who measures its life span to be 2065 s?
- 1. Some jets emitted by galaxies, for astronomical distances large enough, can appear to travel faster than the speed of light c, through our line of sight. Suppose that a distant galaxy, AB15, is moving with speed v at an angle e with respect to the earth and it emits two light rays separated by a time At in its local time. show that a) The time interval on earth in which the two light rays are emitted is given by Atr = At(1– B cos 0) b) The apparent speed of AB15 measured by an observer on earth is ArT VA = Att B sin e 1-B cos 0 %3D c) For B = 0.75, calculate the value of 0 for which Va =cThe length of a rod seems shortest to an observer when it moves in a specific direction. What change would he observe when the direction of rod changes by 900? O A. The rod becomes even smaller B. The length of the rod increases O C. The length of the rod remains the same D. The rod has the length equal to its proper length O E. The length of the rod doubles2. 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 4.61 m above the floor. The spaceship moves past the Earth with a speed of 0.80c in a direction parallel to the floor of the ship. What is the length of the ladder as seen by an observer on Earth?