The speed of light in a vaccum is about 3.00 x10^8m/s to determine how many km a pulse from a lazer beam travels in exactly one hour

Distance = (speed) x (time)

Distance = (3 x 10⁸ meter/second) x (1 hour)

Distance = 3 x 10⁸  meter-hour per second

Distance = 3 x 10⁵ kilometer-hour per second

Hmmm.  That answer is perfectly correct and totally useless.  We have no idea how far one meter-hour per second is.  It's a unit we never use.  We'd better convert the answer to a unit of length that we use every day.

(3 x 10⁵ km-hour/sec) x (3,600 sec/hour) =

(3 x 10⁵ x 3,600)  (km-hour-sec/hour-sec) =

1.08 x 10⁹ km

THAT's it !  A pulse of light in vacuum travels 1.08 billion km in one hour.

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).