2011c_x1b

# 2011c_x1b - MATH 151 FALL SEMESTER 2011 COMMON EXAMINATION...

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Unformatted text preview: MATH 151 , FALL SEMESTER 2011 COMMON EXAMINATION I- VERSION B Name (print): Instructor’s name: Signature: Section No: Part 1 – Multiple Choice ( 12 questions , 4 points each , No Calculators ) Write your name, section number, and version letter ( B ) of the exam on the ScanTron form. Mark your responses on the ScanTron form and on the exam itself 1 . Let v & & 4, & 2 ¡ and w & 6 i ¡ 2 j . Compute 1 2 v & w . a . 5 b . 4 c . 3 d . 2 e . 1 2 . A ball whose weight is 50 Newtons hangs from two wires, one at angle 23° from horizontal, and the other at angle 37° from horizontal. Let T 1 be the tension in the first wire, and T 2 be the tension in the second wire. Which set of equations can be used to solve for T 1 and T 2 ? a . | T 1 |cos23° ¡ | T 2 |cos37° & and & | T 1 |sin23° ¡ | T 2 |sin37° & 50 b . & | T 1 |cos23° ¡ | T 1 |cos37° & and | T 2 |sin23° ¡ | T 2 |sin37° & 50 c . | T 1 |cos23° ¡ | T 2 |cos37° & 50 and & | T 1 |sin23° ¡ | T 2 |sin37° & d . & | T 1 |cos23° ¡ | T 2 |cos37° & 50 and & | T 1 |sin23° ¡ | T 2 |sin37° & e . & | T 1 |cos23° ¡ | T 2 |cos37° & and | T 1 |sin23°...
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2011c_x1b - MATH 151 FALL SEMESTER 2011 COMMON EXAMINATION...

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