Si un cuerpo recorre 17 m al este y regresa 9 al oeste, ¿Cuál es su desplazamiento?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

What is a subatomic particle with a negative charge and very little mass?

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?