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12 and 13 please only please

12 and 13 please only please

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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12 and 13 please only please
a. Volt.A.s1. b. 2.s C. volt.A-1.s. d. Henry. 12. Doubling the number of turns for a solenoid at constant of other factors, its self- induction coefficient becomes... a. Doubled b. Increases to four times. c. Unchanged. 13. The pendulum shown in (a) has an aluminium blade, when it swings Solid alumlnlum pendulum Slotted aluminkum pendulum between the poles of a magnet, its motion is very heavily damped (b) (brake), "It slows down after a few swings". If the solid blade is replaced by one with slots cut into it, as shown in (b). the slot- ted blade comes to rest later than the solid vane (takes longer time) because ... a. The slotted blade cuts the magnetic field more rapidly than the solid blade. b. The slotted blade is lighter than the solid blade. C. Smaller induced eddy currents flow in the slotted blade than the solid blade. d. Air resistance on the slotted blade is smaller than on the solid blade. 14. [Eg-18] The energy conversions in the induction furnacęs are... a. Thermal → electricity magnetic b. electricity Thermal → magnetic C. magneticThermal - -> electricity
Transcribed Image Text:a. Volt.A.s1. b. 2.s C. volt.A-1.s. d. Henry. 12. Doubling the number of turns for a solenoid at constant of other factors, its self- induction coefficient becomes... a. Doubled b. Increases to four times. c. Unchanged. 13. The pendulum shown in (a) has an aluminium blade, when it swings Solid alumlnlum pendulum Slotted aluminkum pendulum between the poles of a magnet, its motion is very heavily damped (b) (brake), "It slows down after a few swings". If the solid blade is replaced by one with slots cut into it, as shown in (b). the slot- ted blade comes to rest later than the solid vane (takes longer time) because ... a. The slotted blade cuts the magnetic field more rapidly than the solid blade. b. The slotted blade is lighter than the solid blade. C. Smaller induced eddy currents flow in the slotted blade than the solid blade. d. Air resistance on the slotted blade is smaller than on the solid blade. 14. [Eg-18] The energy conversions in the induction furnacęs are... a. Thermal → electricity magnetic b. electricity Thermal → magnetic C. magneticThermal - -> electricity
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