PHYS 218 Midterm: Texas A&M Physics 218 Exam1_Spring_2013
Document Summary
Sections 501 to 506, 522, 524, and 526. Rules of the exam: you have the full class period to complete the exam, formulae are provided on the last page. If the answer marked does not obviously follow from the shown work, even if the answer is correct, you will not get credit for the answer. Sign below to indicate your understanding of the above rules. For time is seconds, for mass is kg, and for length is meter. (b) (5 points) a common unit of pressure in the us is the psi or pounds inch2 . Know- ing that a pound is 4. 45 newtons and that an inch is 0. 0254 m express 10 psi in units of n ewtons m2. We get : 10 pounds in2 = 10 4. 45. ~a ~b = ( 5cos(37), 4 5sin(37)) ( 4, 1) ~c = 20sin(37)( 5cos(37), 4 5sin(37)) ( 48, 12) Part 2: position, velocity, and acceleration (25 points)
