How long does it take light to travel 1 Hm (1 "hellameter" = 10^27 in vacuum?
A. 3.33e–36 s.
B. 3.00e–19 s.
C. 3.33e+18 s.
D. 3.00e+35 s.
Answer:C
How long does it take light to travel 1 Hm (1 "hellameter" = 10^27 in vacuum?
A. 3.33e–36 s. B. 3.00e–19 s. C. 3.33e+18 s. D. 3.00e+35 s.