Which of the following planets is home to the largest volcano in our solar system?

A. Earth
B. Mercury
C. Mars
D. Uranus

What is the role of lenses in microscopy?

In which of the following is positive work done by a person on a suitcase

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?