48750 J of heat are applied to a piece of aluminum, causing a 56.0 oC increase in its temperature. The specific heat of aluminum is 0.9025 J/g x oC. What is the mass of the
aluminum?

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?