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1. Which of the following materials will attain a net positive charge when rubbed against cotton? a. cotton b. hair C. pine wood d. wool 2. What is the net charge of a system that contains 1.2 x 1022 protons and 6.0 x 1023 electrons? a. -9.4 x 104C b. +9.4 x 104 C C. -9.8 x 104 C d. +9.8 x 104C

1. Which of the following materials will attain a net positive charge when rubbed against cotton? a. cotton b. hair C. pine wood d. wool 2. What is the net charge of a system that contains 1.2 x 1022 protons and 6.0 x 1023 electrons? a. -9.4 x 104C b. +9.4 x 104 C C. -9.8 x 104 C d. +9.8 x 104C

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. Which of the following materials will attain a net positive charge when rubbed against cotton? a. cotton b. hair C. pine wood d. wool 2. What is the net charge of a system that contains 1.2 x 1022 protons and 6.0 x 1023 electrons? a. -9.4 x 104 C b. +9.4 x 104 C C. -9.8 × 104 C d. +9.8 x 104 C 3. Charged particles A, B, and C are arranged in a straight line, where particle B is 2 cm to the right of particle A, and particle C is 3 cm to the right of particle B. Determine the net electrostatic force exerted to particle B, if qA = +1 µC, qB = -5 µC, and qc = +3 μC. a. 37.5 N, - b. 37.5 N, → c. 262.5 N, + d. 262.5 N, → 4. Two wires of the same length were used in separate circuits. The diameter of wire X is half the diameter of wire Y. If the material used in wire X has twice the resistivity to that of wire Y, compare the resistance values of the two wires. a. Rx = 0.125Ry b. Rx = 0.5Ry c. Rx 2Ry %3D d. Rx = 8Ry 5. If each wire in #4 is connected to an identical battery, what is the relationship of the ele current passing through the two wires? a. Ig = 0.125ly b. Ix = 0.5ly C. Ix = 2ly d. Ix = 8ly 6. Which of the following statements is TRUE about the element shown? -7 A a. It absorbs 1.4 W of power. b. It absorbs 35.0 W of power. c. It supplies 1.4 W of power. d. It supplies 35.0 W of power. -5 V 7. According to chargetech.com, the ideal rating for a high-capacity power bank is 40,000 mAh. How many electrons can such power bank store if it is fully charged? a. 6.94 x 1016 electrons b. 6.94 x 1022 electrons c. 9.00 x 1022 electrons d. 9.00 x 1023 electrons 8. 15 moles of electrons are passing through a conducting wire within 2 mins. The current flowing through the wire is comparable to that of are 6.022 x 1023 electrons per mole. a. a household appliance Assume that there C. a large industrial motor d. a synaptic current b. human sensation
Transcribed Image Text:1. Which of the following materials will attain a net positive charge when rubbed against cotton? a. cotton b. hair C. pine wood d. wool 2. What is the net charge of a system that contains 1.2 x 1022 protons and 6.0 x 1023 electrons? a. -9.4 x 104 C b. +9.4 x 104 C C. -9.8 × 104 C d. +9.8 x 104 C 3. Charged particles A, B, and C are arranged in a straight line, where particle B is 2 cm to the right of particle A, and particle C is 3 cm to the right of particle B. Determine the net electrostatic force exerted to particle B, if qA = +1 µC, qB = -5 µC, and qc = +3 μC. a. 37.5 N, - b. 37.5 N, → c. 262.5 N, + d. 262.5 N, → 4. Two wires of the same length were used in separate circuits. The diameter of wire X is half the diameter of wire Y. If the material used in wire X has twice the resistivity to that of wire Y, compare the resistance values of the two wires. a. Rx = 0.125Ry b. Rx = 0.5Ry c. Rx 2Ry %3D d. Rx = 8Ry 5. If each wire in #4 is connected to an identical battery, what is the relationship of the ele current passing through the two wires? a. Ig = 0.125ly b. Ix = 0.5ly C. Ix = 2ly d. Ix = 8ly 6. Which of the following statements is TRUE about the element shown? -7 A a. It absorbs 1.4 W of power. b. It absorbs 35.0 W of power. c. It supplies 1.4 W of power. d. It supplies 35.0 W of power. -5 V 7. According to chargetech.com, the ideal rating for a high-capacity power bank is 40,000 mAh. How many electrons can such power bank store if it is fully charged? a. 6.94 x 1016 electrons b. 6.94 x 1022 electrons c. 9.00 x 1022 electrons d. 9.00 x 1023 electrons 8. 15 moles of electrons are passing through a conducting wire within 2 mins. The current flowing through the wire is comparable to that of are 6.022 x 1023 electrons per mole. a. a household appliance Assume that there C. a large industrial motor d. a synaptic current b. human sensation
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