contestada

A mountain lake, 400 meters above sea level, holds 350,000 liters ofwater. A liter of water has a mass of 1 kg.How much potential energy does this lake posses?

Respuesta :

We will have that the potential energy that the lake possesses is:

[tex]P=(350000lt\cdot\frac{1\operatorname{kg}}{1lt})(400m)\Rightarrow P=140000000\operatorname{kg}\cdot m[/tex]

So:

[tex]P=140000000\operatorname{kg}\cdot m\cdot\frac{1J}{0.1019716213\operatorname{kg}\cdot m}\Rightarrow P=1372931000J[/tex]

So, the potential energy is 1372931000 Joules.