The value of gravitational constant "G" is not same on the moon as that on the surface of the earth due to the variation in the value of acceleration due to gravity on the moon True or false please need help

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?

Acorporation gives out its profits as dividends paid to whom?

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?