A filter filled with liquid is in the shape of a vertex-down cone with a height of 66 inches and a diameter of 44 inches at its open (upper) end. If the liquid drips out the bottom of the filter at the constant rate of 11 cubic inches per second, how fast is the level of the liquid dropping when the liquid is 33 inches deep

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?