Question 1 (1 point) Saved It is known that polyurethane has a greater affinity for electrons than teflon. When the two objects are rubbed together, they become charged. What is the charge on polyurethane and teflon? O Polyurethane has a net positive charge, teflon has a net positive charge. 0 Polyurethane has a net negative charge, teflon has a net positive charge. 0 Polyurethane has a net positive charge, teflon has a net negative charge. @ Polyurethane has a net negative charge, teflon has a net negative charge. Question 2 (1 point) Three point charges are arranged in a right triangle as illustrated below. 0.0200 In 1.60x10'GC 1.90x10'6C 0.0300 In 1.70 x 1076C The net electrostatic force on point Y is _____ N [__ N of E]. [:'v Enter the three-digit magnitude of the force, a space, then two-digit angle. ie: 123 45 Question 3 (1 point) Each sphere below is made of either silver, carbon, or wood. Increasing Conducting Ability Insulators Semi-conductors Conductors Glass pool Rubber Silicon Water Copper Dry Air Aluminum Germanium Each sphere was touched with an object carrying excess negative charge. Sphere A Sphere B Sphere C Determine the substance each sphere is made of. Sphere A- Carbon , Sphere B- Wood, Sphere C- Silver Sphere A- Wood , Sphere B- Carbon, Sphere C- Silver Sphere A- Wood, Sphere B- Silver, Sphere C- Carbon Sphere A- Carbon, Sphere B- Silver, Sphere C- WoodQuestion 4 (1 point) Many allergies are due small airborne particles like pollen, dust mites, or molds. Electrostatic precipitators are special machines that take these particles and ionizes them- causing them to be charged. Special plates can then be used to attract these particles. In order to capture pollen particles that are negatively charged, the plates would need to be: 0 neutral 0 negatively charged 0 none of the above 0 positively charged