MasteringPhysics1a - MasteringPhysics Assignment Print View

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MasteringPhysics: Assignment Print View .. 1 of 9 10/4/2007 3:25 PM [ Print View ] PHCC 141: Physics for Scientists and Engineers I - Fall 2007 1a. Units and Vectors Due at 11:59pm on Thursday, August 23, 2007 Hide Grading Details Number of answer attempts per question is: 10 You gain credit for: correctly answering a question in a Part, or correctly answering a question in a Hint. You lose credit for: exhausting all attempts or requesting the answer to a question in a Part or Hint, or incorrectly answering a question in a Part. Late submissions: reduce your score by 14.3% over each day late. Hints are helpful clues or simpler questions that guide you to the answer. Hints are not available for all questions. There is no penalty for leaving questions in Hints unanswered. Grading of Incorrect Answers For Multiple-Choice or True/False questions, you lose 100% / ( # of options - 1 ) credit per incorrect answer. For any other question, you lose 3% credit per incorrect answer. REMINDER: DO THE INTRODUCTION TO MASTERING PHYSICS ASSIGNMENT FIRST - It is required for you to get credit for subsequent assignments. Scientific Notation A number written in scientific notation has the form , where and is an integer. Part A Consider the expression . Determine the values of and when the value of this expression is written in scientific notation. Hint A.1 A walk-through Hint not displayed Enter and , separated by commas. ANSWER: , = 5,-2 These problems concern vector components Vector Components--Review Learning Goal: To introduce you to vectors and the use of sine and cosine for a triangle when resolving components. Vectors are an important part of the language of science, mathematics, and engineering. They are used to discuss multivariable calculus, electrical circuits with oscillating currents, stress and strain in structures and materials, and flows of atmospheres and fluids, and they have many other applications. Resolving a vector into components is a precursor to computing things with or about a vector quantity. Because position, velocity, acceleration, force, momentum, and angular momentum are all vector quantities, resolving vectors into components is the most important skill required in a mechanics course. The figure shows the components of , and , along the x and y axes of the coordinate system, respectively. The components of a vector depend on the coordinate system's orientation, the key being the angle between the vector and the coordinate axes, often designated .
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MasteringPhysics: Assignment Print View .. 2 of 9 10/4/2007 3:25 PM Part A The figure shows the standard way of measuring the angle. is measured to the vector from the x axis, and counterclockwise is positive. Express
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This note was uploaded on 10/28/2008 for the course PH 141 taught by Professor Toki during the Fall '08 term at Colorado State.

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MasteringPhysics1a - MasteringPhysics Assignment Print View

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