Which statement correctly describes a characteristic that a scientific measuring tool should have?
A. To be accurate, it must be able to give consistent measurements
of a quantity
B. To be accurate, it must be able to make measurements that are
close to the actual value.
C. To be accurate, it must be able to make measurements using very
small units.
D. To be accurate, it must be able to make measurements using very
large units.
SUBMIT

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?