Vf = 0 + 3.5•8.7
= 30.45 m/s
Sound waves are longitudal waves meaning they go back and forth
C, they didn't know any better
You'll never get the correct answer without the correct conversion factor. Note carefully that you have no decimal. It should be
<span>1 km = 0.6214 miles </span>
<span>1000 m = 1 km </span>
<span>60 seconds = 1 minute </span>
<span>60 minutes = 1 hour. </span>
<span>2.998E8 m/s x (1 km/1000m) x (0.6214 miles/km) x (60 sec/min) x (60 min/hr) = ?</span>
A., 101.7 km/h is the correct answer for this question