Old P1112 Exam 1.pdf - Section YOUR NAME Section Instructor’s Name Physics 1112 7:30-9:00 p.m PLEASE CHECK THAT THIS PACKAGE HAS 14 PROBLEMS ON 16

# Old P1112 Exam 1.pdf - Section YOUR NAME Section...

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Your Name: __________________________________ 1 Multiple Choice. For each of the following multiple choice questions, please write the letter(s) corresponding to the best correct answer(s) in the box provided. 1. [3 points] The speed v of deep-water ocean waves depends on g , the magnitude of acceleration due to gravity, and λ , the wavelength of the waves. Use dimensional analysis (consistency of units) to determine the dependence of v on g and λ . ” means “proportional to”. A . v g λ . B . v g λ . C . 1 2 v g λ . D . v g λ . E . v g λ . 2. [3 points] Consider the vector A and coordinate system shown in the figure to the right. Which of the following is/are correct? Give all that apply. A . | | 0 < A . B . | | 0 > A . C . 0 x A < and 0 y A < . D . 0 x A > and 0 y A > . E . 0 x A < and 0 y A > . F . 0 x A > and 0 y A < . G . None. A x + y +
Your Name: __________________________________ 2 3. [6 points] Four identical blocks, numbered 1-4, on a horizontal frictionless surface, are pushed against a vertical wall by a horizontal force F exerted on Block 1 (see figure to the right). (a) (3 points) In which 3 rd law interaction pair of block-to-block or block- to-wall contact forces do the forces have the largest magnitude? A . 1 2. B . 2 3. C . 3 4. D . 4 Wall. E . All the same. Now the wall is removed so that the blocks can slide freely across the frictionless surface. (b) (3 points) In which 3 rd law interaction pair of block-to-block contact forces do the forces have the largest magnitude?

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