Your teacher decided to run a marathon. During a marathon, participants all run 26.2 miles. Your teachers finishes the race in 5 hours. What is the average speed your teacher moved at during the race? (Include decimal points in your answer

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?