13 minutes
Step-by-step explanationStep 1
find the distance to thunder
a) let d represents the distance
let t represents the time,
the distance traveled by the ligth is given by:
and
the distance traveled by the sound
i) convert the 9.8 seconds into hours
and
use equation (1) and equatin (2) to solve for t
now, replace in the equation (1) to find the distance
so,
the distance to the center of the sterom is 3.36 Km
Step 2
now, to know the time of the storm to arrive, we need to aply the formula
finally, to conver from hours to miinutes, multiply by 60
so
therefore, the answer is 13 minutes
I hope this helps you