Understanding charge

Objects become negative because _ . They gain electron. They lose electrons. They gain protons. They lose protons. A negatively charged rod is brought close to (but not touching) two conducting spheres. The metal spheres are touching. Which of the following diagrams correctly shows the charges on the spheres? A neutral metal sphere is touched with a negatively charged rod. Afterwards the sphere has been charged by Induction Conduction Polarization Friction While the spheres are touching the right sphere is: Neutral Negative Positive After the two metal spheres are separated, what is the charge of the left sphere? Positive Neutral Negative IAfter they are separated, the right sphere has been charged by: (the rod never touched the spheres) Conduction Induction Polarization .If the rubber rod is rubbed on the metal ball, the electroscope becomes charged by Induction Conduction Polarization Friction A negatively charged rod is brought close to (but not touching) two conducting spheres. The metal spheres are NOT touching each other. Which of the following diagrams correctly shows the charges on the spheres? How does the charge of a proton compare with the charge of an electron? Same sign, but different magnitude. Same magnitude, but different sign. Different magnitude and different sign. Same sign and same sign. Object 1 and 2 repel each other. Object 2 and 3 attract each other. How will object 1 and 3 interact? They will not affect each other. They will attract each other. They will repel each other. Objects become positive because. They lose electrons. They gain protons. They gain electrons. They lose protons. Object 1 and 2 repel each other. Object 2 and 3 repel each other. How will object 1 and 3 interact? They will not affect each other. They will attract each other. They will repel each other. A small positive charge is moving to the right. If it takes the path shown, what is the charge of the second object? Neutral Negative Positive What is the second charge? Neutral Negative Positive A charged balloon is brought close to a wall that is made up of an insulating materials. The wall is charged by. Conduction Friction Polarization When the negatively charged rubber rod is brought close to (but not touching) the electroscope the metal leaves at the bottom move apart. What is the charge of the leaves? Positive Neutral Negative If the two larger charges are fixed (they can't move), what will the smaller charge do? Stay where it is. Accelerate to the right. Accelerate to the left. Matching: Electrostatics Pull definitions next to words on left. Ion An atom with a different number of electrons than protons. Insulator Any material that resists the flow of electricity. Conductor Any material that does not resist electricity. Negative The charge that attracts protons. Electricity The flow of electrons. Protons The charge that attracts electrons. Coulomb A unit of measuring the amount of charge. Electrically neutral An object that has equal amounts of positive and negative charges Electric Force The pushes and pulls that electric charges exert on each other. If the distance between two charged particles triples, by what factor does the electrostatic force change? 9 3 1 1 If both charges double, by what factor does the electrostatic force change? 2 1 4 1 Parts of the atom. Fill in the table below for the three subatomic particles. Particle Charge Location Proton 1.6E^-19 C Nucleus Electron -1.6E-19 C Cloud Neutron 0 C Nucleus After rubbing his hair with a balloon, Johnny’s hair looked like this. Explain why these hair strands stand up.