Question

11 multiple choice 3 points move the balloon to the wall so that it sticks to it. what happens to the charges on the wall? the electrons in the wall are repelled by the protons in the balloon. the electrons in the wall are attracted to the protons in the balloon. the electrons in the wall are repelled by the electrons in the balloon. the electrons in the wall are attracted to the electrons in the balloon. 12 multiple choice 3 points why does the balloon stick to the wall and not fall down? the force of attraction between the opposing charges is stronger than the force of gravity that pulls the balloon down. it is one of the deep mysteries of the universe. the charges in the wall have a greater force than the charges in the balloon. the force of gravity is equal to the electrical force.

Explanation:

• For question 11: When a balloon sticks to a wall, it is because of static - electricity. If the balloon has a negative charge (due to having extra electrons), the electrons in the wall (which is a neutral object) are repelled by the electrons in the balloon. This creates an induced charge separation in the wall, with the side near the balloon having a positive charge (due to electron - repulsion) and the far side having a negative charge.
• For question 12: The balloon sticks to the wall and does not fall because the force of attraction between the opposing charges (the charge on the balloon and the induced charge on the wall) is stronger than the force of gravity that pulls the balloon down.

Answer:

1. The electrons in the wall are repelled by the electrons in the balloon.
2. The force of attraction between the opposing charges is stronger than the force of gravity that pulls the balloon down.