The diagram illustrates a hydroelectric power station. The reservoir is connected to the turbines by a pipe with a uniform cross-sectional area. Water moves from the reservoir, along the pipe and through the turbines at a steady rate. Which statement about how the energy of the water changes as it travels from X to Y is correct?
- AIt gains both gravitational potential energy and kinetic energy.
- BIt loses gravitational potential energy and gains elastic potential energy.
- CIt loses gravitational potential energy and gains kinetic energy.
- DIt loses both elastic potential energy and gravitational potential energy.