Why the specific heat capacity of the sun remain constant

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?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m