Sirius is about 9.00 ly from Earth. To reach the star by spaceship in 15.0 y (ship time), how fast must you travel?
Sirius is about 9.00 ly from Earth. To reach the star by spaceship in 15.0 y...
One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indicates the existence of one such planet named Boralis orbiting a star 120 ly from our solar system. Consider an interstellar spaceship leaving Earth to travel to Boralis. The ship can reach 0.70c almost instantly and can also decelerate almost instantly. The ship is 175 m long in its reference frame. (a) What is the length of the moving...
One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indicates the existence of one such planet named Boralis orbiting a star 120 ly from our solar system. Consider an interstellar spaceship leaving Earth to travel to Boralis. The ship can reach 0.96c almost instantly and can also decelerate almost instantly. The ship is 169 m long in its reference frame. (a) What is the length of the moving...
A star is 14.7 ly (light-years) from Earth. (a) At what constant speed (in m/s) must a spacecraft travel on its journey to the star so that the Earth–star distance measured by an astronaut onboard the spacecraft is 4.46 ly? m/s (b) What is the journey's travel time in years as measured by a person on Earth? yr (c)What is the journey's travel time in years as measured by the astronaut? yr
The parallax of the star Sirius, as viewed from Earth, is about 0.379 arc seconds. How many parsecs away is it? (Hint: D=1/p)
Light requires 4.5 years to travel from the nearest star to earth. If we could travel there in a spaceship going 90% of the speed of light, the trip would require 5.0 years according to clocks on earth. How much time would pass for the passengers in the ship?
piloting a state-of-the-art spaceship to α Centauri, which is a star about 4 lightyears away as measured from Earth. Your ship cruises at a speed of 0.6c. For this problem, you can assume that Earth and a Centauri are at rest with respect to each other. At your journey's midpoint, you decide to send a souvenir package to your folks back home. You launcha probe back to Earth at a speed of v 0.8c from your perspective. a. How long...
Alpha Centauri, the binary star closest to our solar system, is about 4.0 ly away. If a spaceship traveled this distance with a constant speed of 0.85c relative to Earth, how much time would elapse (a) on a clock on the spaceship? Ans in Years
4) A spaceship leaves earth (event A), travels to Alpha Centauri, and then returns to earth exactly 15.0 y later (event B) with respect to clocks on the earth. Alpha Centauri is 4.3 ly from earth. The spaceship's acceleration time is so short that it spends virtually all of its time traveling at a constant speed. a) If the spaceship travels straight towards Alpha Centauri and back again, what is the time between events A and B as measured by...
A spaceship at rest on the earth has a length of 120m and a mass of 16,000kg. Then the spaceship begins to move away from the earth at 3/4 speed of light. If the spaceship sends out a second ship away from the earth on what observers on the spaceship think is 1/2 speed of light, how fast do the observers on earth think the second ship is moving? If the spaceship sends out a second ship toward the earth...
Question 1: You wish to travel to a planet located 10 light years (ly) away. a) How fast must you travel for that distance to be only 2.0 ly as seen from your spaceship? b) How long does it take for you to get there in your time? c) According to your friends on Earth, how long does it take for you to get there?