Which statement is true about energy changes? A.
Energy cannot be created or destroyed.
B.
Energy can be created but not destroyed.
C.
Energy can be destroyed but not created.
D.
Energy can be created and destroyed.

Using the law of physics, or the conservation of energy, your answer is:

A. Energy cannot be created or destroyed.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

the answer is d. 74.02