En las bóvedas del banco central de Bolivia guarda 3000 lingotes de oro, están fabricadas de una aleación de oro-cobre de 23 quilates de oro las dimensiones de cada lingote son 0.25m por 0.4pies y 3.15 pulgadas además se sabe que la densidad relativa es 16.2 los precios a nivel internacional para el oro es 337 dólares por oz troy y el gramo del cobre cuesta 12 bs

I'm not sure but i will try to find out

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy