Stirring, crushing, heating: how do all three treatments affect the solution process?
a. increase potential energy of solvent molecules, increase rate of solution
b. increase contact between solute and solvent molecules, increase rate of solution
c. decrease surface area of solution and solvent particles, decrease rate of solution
d. decrease contact between solute and solvent molecules, increase of rate solution

Stirring, crushing and heating increases the contact between the solute and solvent particles and increases the rate of dissolution of the solute, into the solution. They lead to spreading of the solvent molecules, across the solute and affect solubility. Particle size is another factor which affects solubility. 

Cis the

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