identical balloons by rubbing them with a wool cloth. The balloons repel each other. According to Coulomb's law, which of the following should the student do to increase the electrical force between the balloons? Select one: decrease the charge of any of the two balloons increase the mass of each balloon decrease the distance between the balloons

How far apart must be a proton from a group of 24 protons (held in place next to one another) if the magnitude of the electrostatic force acting on the lone proton due to the group is equal to the magnitude of the gravitational force on the lone proton at Earth's surface? Number Units

Draw the deflection of the needle, which way it moved, the location of positive and negative charges, and which way the charges moved for each of the following scenarios: 1) Rubbing PVC rod with wool to charge it negatively and then moving it close to the top of the electroscope disk without touching the disk with the rod. 2) Rubbing acrylic rod with silk to charge it positively and then moving it close to the top of the electroscope disk without touching the disk with the rod. 3) Touching charged PVC rod to disk and then moving the rod away. 4) Bringing the charged acrylic rod close to electroscope that was touched at the outset with the charged PVC rod. 5) Grounding electroscope then touching the edge of the disk with a grounded wire while concurrently bringing the charged PVC rod up close, but not touching, to the other side of the disk. Removing the grounding wire first and only then moving the PVC rod away.

Question 7 (1 point) To charge an electroscope positively by induction you need O two objects of the same charge O O a positively charged rod and a ground O O a negatively charged rod O two objects with opposite charges a negatively charged rod and a ground a negatively charged rod