1)
time = distance/speed
= 7.5 c.years/(0.6 c)
= 12.5 years
2)
t = t0*sqrt{1-(v/c)2}
= 12.5*sqrt{1-(0.6c/c)2}
= 10 years
age = 10 +21
= 31 years
A very fast space-craft with a speed of 0.60c travels to the nearby star Alpha Ventura...
A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9960 c relative to the earth. An astronaut recruit on board is 19 years old when the probe leaves the earth.What is her biological age when the probe reaches Capella, as measured by the astronaut?What is her biological age when the probe reaches Capella,...
An astronaut travels at a speed of 0.98c from the Earth to a distant star that is 6.0 times 10^17 m away. If the astronaut is 34 years old when she begins her trip, how old is she when she arrives at the star? Years old
You travel in ship 2) You travel in your ship White Star One at a constant speed of v 0.96*c to the nearby star Proxima Centauri, located 4.2 light years away from Earth. a. From your point of view in the ship, how far is the star from the Earth? b. If your mass is 68 kg, what is your kinetic energy while moving with the ship? c. How long does the journey take, according to clocks on your ship?...
The International Space Federation constructs a new spaceship that can travel at a speed of 0.980c. Mary, the astronaut, boards the spaceship to travel to Barnard's star, which is the second nearest star to our solar system after Alpha Centauri and is 5.98 ly away. After reaching Barnard's star, the spaceship travels slowly around the star system for 6 years doing research before returning back to Earth. (a) How much time does the journey take? years (b) How much older...
PLEASE ANSWER BOTH!!! Our best measurements from Earth indicate that the star system Alpha Centauri is 4.2 light-years away. Suppose some of our astronauts traveled there at a speed v 0.83c. What would the astronauts measure as the distance to Alpha Centauri? O 2.8 light-years 9.1 light-years O 2.9 light-years O 2.3 light-years O 7.5 light-years If a proton with mass 1.67 x 10"27 kg moves in an accelerator such that its total energy is five times its rest energy...
f) in vacuum, light travels at about 186,282 miles per second. One mile is about 161 kilometers (km). Astronomers prefer to use units of distance that are reasonable in describing how far objects are from Earth. For example, for distances in the solar system we use the astronomical unit (AU), which is equal to the average distance of Earth from the Sun; 1 AU is about 150 million km. For distances to stars and galaxies, astronomers use the light-year (1...
I. Darth Vader's parking problem (Part I): Darth Vader "drives" his Star Destroyer of length = 2,200 m home. He tries to park the spaceship in his newly-build garage, which is at rest. The contractor who build the garage messed up the blueprints and made the garage only 2,000 m long (the poor guy must not have known who he was working for). Darth Vader apporaches the garage at very high speed (close to the speed of light). From the...
Need all questions answered. Thank you 4. Speed of Light. Light travels through space at an incredible speed, 186,282 miles per second. How far does light travel through space in one hour? (This is the speed of light in miles per hour.) How far does light travel in one year? (This distance is a light-year.) 5. Interplanetary Communication. The average distance between the planet Mars and the Earth is 100 million miles. We communicate with robots on Mars with radio...
Before leaving Alpha Centauri, you change from the shuttle to a light speed interstellar cruiser and head out deep into the galaxy to visit another binary star system - but this one is composed of dead stars! To occupy your waking travel time by reading about this star system in the "Outer Space Tourbook": Stars spend most of their lifetimes undergoing nuclear fusion in their cores, which is why they give off so much light. However, when the material necessary...
Rush Inuit is an impulsive, fly-by-the-seat-of-his-pants kind of guy. His best friend, Stu Earley, is the exact opposite – cautious and reluctant. The two are recent UNCG graduates who roomed together all … ahem … eight years. You know who they are even though they graduated last year because everyone on campus knows Rush and Stu – they’re legends on the social scene. To make ends meet during college, Rush and Stu organized fun trips to exciting destinations and charged...