Math
posted by Shobhi .
A star is 300 light years away from Earth. If the speed of light is 3 X 10^5 km/s, calculate the distance the star is from Earth. Give your answer in kilometers and written if standard form.

Math 
Reiny
300(3 x 10^5)
= 900 x10^5
= 9.0 x 10^7 
Math 
Reiny
totally misread that question, sorry
300 years
= 300(365) days
= 300(365)(24) hours
= 300(365)(24)(3600) seconds
so distance
= 300(365)(24)(3600)(3 x 10^5) km
= 2.3824 x 10^16 km 
Math 
Shobhi
The question says 300 light years not 300 years
Respond to this Question
Similar Questions

Maths
the speed of light is 3 * 10^ 8m/s. Jupiter is 778 million km from the sun. Calculate the number of minutes it takes for sunlight to reach Jupiter ? 
Earth science
How long an exposure would a photographer need to photograph star trails that are complete circles? 
Math
The distance that light travels in 1 year (a light year) is 5.88x10^12 miles. If a star is 2.4x10^8 light years away, what is the distance to that star in miles? 
Math
The distance that light travels in 1 year (a light year) is 5.88x10^12 miles. If a star is 2.4x10^8 light years away, what is the distance to that star in miles? 
5th grade
one light year is about 9 trillion kilometers . arctus is a star that is 37 light years from earth.if you are 11 years old now,how old will you be when light that is leaving arcturus today reaches earth. how far in kilometers willit … 
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? 
Science
One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from Earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reached Earth? 
Science 2
One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now , how old will you be when light that is leaving. Arcturus today reaches Earth ? 
science help pls pls
A star is observed from two positions of Earth in its orbit, in summer and winter. Which of these is the best method to calculate the approximate distance of the star from Earth? 
modern physics
A star emits light with wavelength 120 nm. An observer on earth measures the wavelength of the light received from the star to be 600 nm. Calculate the speed with which the star is moving.