If an object is moving, can it be considered "at rest"? -yes, if it's moving at a constant speed
-yes as long as there is no gravity
-no
-only if it's blue

Energy flows from the producer level to the level. is called

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?

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.