If the mass of each ball were the same, but the velocity of ball a were twice as much as ball b, what do you think would happen to the final velocity of each ball after the collision? to answer this question, create a hypotheses in the form of an if-then statement. the “if” is the independent variable, the thing that is being changed. the “then” is the dependent variable, or what you measure as the out come.

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

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?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)