P1051W09 - Circle instructor: Poduska or Morrow Lab period:...

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Circle instructor: Poduska or Morrow 1 Name:__________________________ Lab period: _____________ Student Number:______________________ MEMORIAL UNIVERSITY OF NEWFOUNDLAND DEPARTMENT OF PHYSICS AND PHYSICAL OCEANOGRAPHY Final Exam Physics 1051 Winter 2009 3:00-5:00 April 22, 2009 INSTRUCTIONS: 1. Do all SIX ( 6) questions in section 1 and all THREE (3) questions in section 2 . Do TWO questions from section 3 . Marks are indicated in the left margin. Section 1 contains 36 marks, Section 2 contains 36 marks, and section 3 contains 28 marks. Budget time accordingly. 2. You may use a calculator. All other aids are prohibited. 3. Write answers neatly in space provided. If necessary, continue onto the back of the page. 4. Do not erase or use “whiteout”. Draw a line neatly through material to be replaced. 5. Assume all information given is accurate to 3 significant figures. 6. Don’t panic. If something isn’t clear, ASK! SEE LAST PAGE FOR SOME POTENTIALLY USEFUL FORMULAE AND CONSTANTS For office use only: 1 2 3 4 5 6 7 8 9 10 11 12 TOTAL
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Circle instructor: Poduska or Morrow 2 Name:__________________________ Lab period: _____________ Student Number:______________________ SECTION 1: There are 6 SHORT ANSWER questions. Each is worth 6 marks for a maximum of 36 marks. Budget time accordingly. [6] 1. A wave is described by the function ( ) ( ) [ ] t x t x y = -1 -1 s 75 m 4 . 8 sin m 017 . 0 ) , (. (a) At what speed does this wave travel? (b) What is the wavelength? [6] 2. What is the magnitude of the electric field 10.0 cm away from a very long line of charge with a linear charge density of 9 10 3 . 6 × C/m? You may find the drawing helpful.
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Circle instructor: Poduska or Morrow 4 Name:__________________________ Lab period: _____________ Student Number:______________________ [6] 5. Consider two identical guitar strings stretched to the same length. The tension in one string is 98 N and the fundamental frequency of the string is 440 Hz. The tension in the second string is 107 N .
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P1051W09 - Circle instructor: Poduska or Morrow Lab period:...

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