If the volume of a rock is 8 cm^3 and its’ mass is 16 g, what is its’ density?
* .5 g/ cm^3
1.0 g/ cm^3
2 g/ cm^3
128 g/ cm^3

We know, Density = Mass / Volume

Substitute the given values, 
d = 16/8
d = 2 g/cm³

In short, Your Answer would be: Option C

Hope this helps!

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