It is known that 1 light year corresponds to the distance light travels in vacuum in 1 year. if the speed of light is c= 3 . 10^8 m/s, determine the order of magnitude, in meter, of 1 light year.

a) 10^12
b) 10^14
c) 10^16 (right answer)
d) 10^18
e) 10^20

Question

It is known that 1 light year corresponds to the distance light travels in vacuum in 1  year. if the speed of light is c= 3 . 10^8 m/s, determine the order of magnitude, in meter, of 1 light year.

a) 10^12
b) 10^14
c) 10^16 (right answer)
d) 10^18
e) 10^20

ipwnbunnies · Answer

Figure out how many seconds are in a year.
Use dimensional analysis to get the distance.

unklerhaukus · Answer

speed           = distance / time
speed * time = distance