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anonymous
 one year ago
a light year is 9.5*10^12 km. the diameter of the milky way galaxy is estimated to be 100,000 light years.
A) what is the diameter of the milky way im kilometers?
B) the speed of light is about 3*10^8 m/s. what is the speed of light in kilometers per hour?
C) about how many days would it take light to travel across the milky way?
D) about how many years would it take light to travel across the milky way?
anonymous
 one year ago
a light year is 9.5*10^12 km. the diameter of the milky way galaxy is estimated to be 100,000 light years. A) what is the diameter of the milky way im kilometers? B) the speed of light is about 3*10^8 m/s. what is the speed of light in kilometers per hour? C) about how many days would it take light to travel across the milky way? D) about how many years would it take light to travel across the milky way?

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0100,000 = 1 * 10^5 lighyears

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0so A is 1 * 10^5 * 9.5 * 10^12

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats 9.5*10^17 right? @welshfella

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0for B you need to use the 2 conversion factors 1 km = 1000m and 1 hr = 3600 secinds

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what do i do? @welshfella

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0to find meters per hour you multiply by 3600 then to find km / hr you divide the result by 1000

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer to the last one? @welshfella

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no wait i multiply it by the thing in the top right? @welshfella

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0no speed of light 3 * 10^8 multiply this by 3.6 * 10^3 then divide the result by 10^3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok i got 1080000 @welshfella
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