One isotope of element J has an atomic mass of 78.92u and a relative abundance of 50.69%. The other major isotope of element J has an atomic mass of 80.92u and a relative abundance of 49.31%. Calculate the average atomic mass element J.

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

A. is your answer.  hope this