Question

The highest recorded waterfall in the world is found at Angel Falls in Venezuela. Its longest single waterfall has a height of 807 m. If water at the top of the falls is at 16.7°C, what is the maximum temperature of the water at the bottom of the falls? Assume all the kinetic energy of the water as it reaches the bottom goes into raising the water's temperature.

Answer 1

mgh=mv²/2
mv²/2=mcΔT =>
mgh=mcΔT
gh=cΔT
c =4183 J/kg•K,
ΔT=gh/c=9.8•807/4183 =1.9°
T1=T+ ΔT=16.7+1.9=18.6℃

Answer 2

Thank you very much!

Answer 3

Thanks a lot