Kerepakupai Vena in Venezuela, more commonly known as Angel Falls, is the world\

Question

Kerepakupai Vena in Venezuela, more commonly known as Angel Falls, is the world's highest waterfall with a height of 979 m and 47 different plunges. The longest plunge (for the water) is 807 m. At the bottom of the fall, the kinetic energy of the water is converted into thermal energy. This results in a temperature increase of the water. If the water has a temperature of 16.3degreeC when it gets to the bottom of the plunge, what was the temperature at the top of the plunge? The specific heat of water is 1.00 kcal/(kg . degree C). what is the potential energy of the water at the top of the falls? What is the potential energy of the water at the bottom of the falls? How are these quantities related to the change in kinetic energy of the water? degree C

Explanation / Answer

m*g*h = m*c * (Tf -Ti )

Ti = Tf - g*h / c

= 16.3 - 9.8*807 / 4184

= 14.409 degree

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