hich of the following terms is given to a pair of stars that appear to change positions in the sky, indicating that they are orbiting one another?A. visual binaryB. eclipsing binaryC. spectroscopic binaryD. double starE. none of the above

In what direction does the medium move relative to the direction of the wave? explain.

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

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?