# earth

posted by .

How long would it take a brown dwarf star, five times the size of the Earth, to travel 450 light years, at 3500 mph?

• earth -

time = distance/speed
1 ltyr = 5.88*10^12 miles

5.88*10^12/3500 = 1.68*10^9 hours

## Similar Questions

1. ### Earth science

How long an exposure would a photographer need to photograph star trails that are complete circles?
2. ### College Physics

Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel?
3. ### colleg physics

Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel?
4. ### college physics

Sirius is about 9.0 light-years from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel?
5. ### physics

A certain star is 10.9 light-years away. How long would it take a spacecraft traveling 0.960c to reach that star from Earth, as measured by observers in the following locations?
6. ### Physics

Suppose you wish to visit a star which is 450 light years away, and that you want your 21000 kg rocket to move so fast that you only age 20 years during the round trip. a. How fast must the rocket travel relative to the Earth?
7. ### Physics

In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. Suppose you wish to visit a star which is 410 ly away, and that you want …
8. ### Physics

A star the size of our Sun runs out of nuclear fuel and, without losing mass, collapses to a white dwarf star the size of our Earth. The radius of our Sun is 6.96×108m , the radius of Earth is 6.37×106m . If the star initially rotates …
9. ### ap physics

A star the size of our Sun runs out of nuclear fuel and, without losing mass, collapses to a white dwarf star the size of our Earth. The radius of our Sun is 6.96×108m , the radius of Earth is 6.37×106m . If the star initially rotates …
10. ### physics

A star the size of our Sun runs out of nuclear fuel and, without losing mass, collapses to a white dwarf star the size of our Earth. The radius of our Sun is 6.96×108m , the radius of Earth is 6.37×106m If the star initially rotates …

More Similar Questions