Sheila and Kevin are helping their science teacher design a lab exercise about gravity in the universe. The simple set-up requires the use of two softballs. Ball t has nothing attached to it. Ball 2 has a long string connected to it. The first step of the activity is to throw Ball 1 in a straight line down the hallway to model a planet that is not affected by the Sun's gravity. What should be done in Step 2 to model the Sun's effect on a planet? A The ball is thrown around the body while holding on to the string. B The ball is thrown around the body with the string trailing behind. C The ball is thrown in a straight line while holding the string. D The ball is thrown in a straight line with the string trailing behind.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.