The negatively charged ballon is brought near two cans what happens

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?

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?