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 17.1°C 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 · °C).

_________ Celcius

Answer 1

Here ,

specific heat of water ., S = 1 kcal/(kg .degree C)

S = 4186 J/(kg.degree C)

let the inital temperature at the top of plunge is Ti

energy gain by water = potential energy lost by water

4186 * m * (17.1 - Ti) = m * 9.8 *807

solving for Ti

Ti = 16.57 degree C

the temperature of water at the top of plunge is 16.57 degree C