p202s04-exam02

p202s04-exam02 - Seat # Physics P202 R. Heinz/R. de Ruyter...

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Seat # Physics P202 R. Heinz/R. de Ruyter EXAM #2 March 4, 2004 6:30–8:30 PM INSTRUCTIONS 1. Please indicate with form (1, 2, 3, or 4) exam you have by marking the appropriate bubble in column “P” of the SPECIAL CODES box on your answer sheet. Your exam is form 1 . 2. Sit in SEAT # given above. 3. DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD TO DO SO. 4. Print your name (last name first) and blacken in the letters on the answer sheet with a #2 pencil. 5. Print your student number (identification number) and blacken in the numbers on the answer sheet with a #2 pencil. 6. Use the fronts and backs of the question sheets for scratch work. Do not use any other scratch sheets. 7. This is a multiple choice exam. Blacken in the answer to each question on the answer sheet. Fill in one and only one answer to each question. 8. Keep your eyes on your own work. 9. You have two hours to complete the exam. When you finish, please show your picture ID as you turn in your answer sheet. Please leave quietly so others are not disturbed. 10. THERE ARE 24 QUESTIONS PLEASE ANSWER ALL OF THEM. THERE IS NO PENALTY FOR GUESSING! This is a closed book, closed note exam! You may use only a calculator and two self-prepared sheets of formulas.
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A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. The wipers are triggered when the voltage across the 125- µ F capacitor reaches 10.0 V; then the capacitor is quickly discharged (through a much smaller resistor) and the cycle repeats. What resistance should be used in the charging circuit if the wipers are to operate once every 1.80 s? a. 8.0 k b. 12.0 k c. 16.0 k d. 20.0 k e. 24.0 k 2. How much work are the batteries in the circuit of the figure below doing in every 10.0 s time interval? a. 0.80 J b. 12 J c. 32 J d. 80 J e. 120 J 3. Which statement is false ? The magnetic force on a charge moving with nonzero velocity v in a magnetic field B a. acts in a direction perpendicular to v . b. acts in a direction perpendicular to B . c. is proportional to v. d.
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This note was uploaded on 07/02/2011 for the course PHYS 202 taught by Professor Warren during the Spring '09 term at Indiana.

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p202s04-exam02 - Seat # Physics P202 R. Heinz/R. de Ruyter...

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