HW1_ Chapter 1

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12/7/23, 12:12 AM HW1: Chapter 1 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=10817597 1/5 HW1: Chapter 1 Due: 11:59pm on Friday, September 22, 2023 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 1.3 Write out the following numbers in full with the correct number of zeros: Part A ANSWER: Correct Part B ANSWER: Correct Part C ANSWER: Correct Part D ANSWER: 86900 9100 0.88 476

12/7/23, 12:12 AM HW1: Chapter 1 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=10817597 2/5 Correct Part E ANSWER: Correct Problem 1.5 Time intervals measured with a physical stopwatch typically have an uncertainty of about 0.2 , due to human reaction time at the start and stop moments. Part A What is the percent uncertainty of a hand-timed measurement of 5 ? ANSWER: Correct Part B What is the percent uncertainty of a hand-timed measurement of 30 ? ANSWER: Correct Part C What is the percent uncertainty of a hand-timed measurement of 7 ? ANSWER: 0.0000362 Uncertainty = 4 Uncertainty = 0.7

12/7/23, 12:12 AM HW1: Chapter 1 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=10817597 3/5 Correct Problem 1.27 The thickness of a page of a given book is 6 10 . The wavelength of orange krypton-86 light is found from the fact that 1,650,763.73 wavelengths of that light is the definition of the meter. Part A How many wavelengths of orange krypton-86 light would fit into the thickness of one page of this book? ANSWER: Correct Problem 1.29 A passenger jet uses about 15 liters of fuel per of flight. Part A What is that value expressed as miles per gallon? Express your answer in miles per gallon. ANSWER: Correct Problem 1.33 Uncertainty = 5×10 −2 = 100 = 0.16

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12/7/23, 12:12 AM HW1: Chapter 1 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=10817597 4/5 The diameter of the planet Mercury is 4879 . Part A What is the surface area of Mercury? Express your answer with the appropriate units. ANSWER: Correct Part B How many times larger is the surface area of the Earth? ANSWER: Correct Prelecture Concept Question 1.07 Part A The motorcycle engine on a Kawasaki Ninja 1000 has a displacement of 1043 cubic-centimeters (cm 3 ). In order to calculate its engine displacement in cubic-inches (in 3 ) what unit conversion factor would you use to multiply the given displacement? ANSWER: Correct Score Summary: = 7.478×10 13 = 6.84 1 in 3 / 2.54 cm 3 2.54 cm 3 / 1 in 3 1 in 3 / 2.543 3 cm 3 2.543 3 cm 3 / 1 in 3

12/7/23, 12:12 AM HW1: Chapter 1 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=10817597 5/5 Your score on this assignment is 100%. You received 6 out of a possible total of 6 points.

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