1) A charge y - 0.3010 0 C is located at position (0. 4) Two magnets are held a distance of 2 em apart in an 0) cm. What is the magnitude of the electric field at orientation for which they attract each other, but cannot location (50, 20) em? (Coulomb constant move, Different objects are inserted between the R - 9.0 x 10' N m"/C ) magnets, Which of the following materials is most likely to change the net force on a magnet? 0) 47 N/C b) 9.3 N/C a) a plastic fork b) a I em thick block of lead c) 1.9x107 N/C c) a steel spoon d) 9300 N/C d) a finger 0) 2.8x 10" N/C e) a thick sheet of glass 2) In a hydrogen atom with radius 5.3x10 m, what 5) Which statement below is NOT a true statement is the electric force of attraction between the proton regarding the role of a voltage source in an electrical and electron? (The Coulomb constant is 9.0x 10" N circuit? m /C-and the charge of a proton and an electron is 41,60x10-19 C.) a) A voltage source causes current in the circuit to flow from low to high potential. a) 8.2x10- N ") A voltage source is analogous to the pump in b) 5. 1 x 10" N a system of circulating water. ") A voltage source provides the electrical ") 8.2x10-17N potential energy needed for current to flow in a d) 1. 1 x10-10 N circuit. c) 5. 1 x 10-8 N d) A voltage source may create positive or negative voltage. ") A voltage source creates an electric potential 3) Lead-192 has a half-life of 3.5 minutes. If you start difference between two points in a circuit, such with 10 kg of lead-192, then how much will remain as the two ends of a battery. after 28.0 minutes? a) 1.3 kg 6) Four 4.0 $2 resistors are connected in parallel across b) 0.039 kg a 6 V battery. What is the equivalent resistance of the ") 2.9 kg circuit? d) 0.63 kg c) 0.36 kg a) 1.0 0 b) 16 12 c) 4.0 0 ME ESIN d) 2.0 92 e) 8.0 12