A crank flashlight, often thought of as an emergency
tool or camping gear, involves many energy
transformations. To work it, you turn a crank by hand,
and this turns an electric coil around a magnet (or
vice versa). This produces an electric current, and the
current lights up the bulb when you turn the flashlight
on. Identify three energy transformations and where
they happen.

Everything that you need in a lab is in your lab

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .