What do these two changes have in common? making paper from wood photosynthesis
Select all that apply.
Both are chemical changes.
Both are changes of state.
Both conserve mass.
Both are caused by heating.

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?