The height of water in hoover dam is 222 m when lake mead is full. for a nominal flowrate of 1060 m3/s the water comes out the bottom at 13 m/s. what is the power in gw? for this problem, ignore the energy lost through friction. make sure you use the correct sign for the change in height.
in reality, the dam’s thermal efficiency is about 90 %, which means about 10% of the power is lost to friction. in all types of power generation plants, there are additional energy losses that occur later in the electric generator and in the power lines

i think it is true since you can test the answer and can use observations to complete it.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.