대학물리학 북스힐 솔루션

대학물리학 북스힐 솔루션

대학물리학 북스힐 솔루션.zip

본문 1 Physics and Measurement CHAPTER OUTLINE 1.1 Standards of Length, Mass, and Time 1.2 Matter and Model-Building 1.3 Dimensional Analysis 1.4 Conversion of Units 1.5 Estimates and Order-of- Magnitude Calculations 1.6 Signi cant Figures ANSWERS TO QUESTIONS * An asterisk indicates an item new to this edition. Q1.1 Density varies with temperature and pressure. It would be necessary to measure both mass and volume very accurately in order to use the density of water as a standard. Q1.2 (a) 0.3 millimeters (b) 50 microseconds (c) 7.2 kilograms *Q1.3 The answer is yes for (a), (c), and (f ). You cannot add or subtract a number of apples and a number of jokes. The answer is no for (b), (d), and (e). Consider the gauge of a sausage, 4 kg.2 m, or the volume of a cube, (2 m) 3 . Thus we have (a) yes (b) no (c) yes (d) no (e) no (f ) yes Q1.4 No: A dimensionally correct equation need not be true. Example: 1 chimpanzee = 2 chimpanzee is dimensionally correct. Yes: If an equation is not dimensionally correct, it cannot be correct. *Q1.5 The meterstick measurement, (a), and (b) can all be 4.31 cm. The meterstick measurement and (c) can both be 4.24 cm. Only (d) does not overlap. Thus (a) (b) and (c) all agree with the meterstick measurement. *Q1.6 41 € 41 € (1 L.1.3 €)(1 qt.1 L)(1 gal.4 qt) (10.1.3) gal 8 gallons, answer (c) 1 SOLUTIONS TO PROBLEMS Section 1.1 Standards of Length, Mass, and Time P1.1 Modeling the Earth as a sphere, we nd its volume as 4 3 4 3 6 37 10 1 08 10 36 3 213 ππ r=× ( ) =× mm . Its density is then ρ × × =× m V 598 10 108 10 552 10 24 21 3 33 . . . kg m kg m . This value is intermediate between the tabulated densities of aluminum and iron. T y pical rocks have densities around 2 000 to 3 000 kg . m 3 . The average density of the Earth is signi cantly higher , so higher -density material must be down below the surface. 8 5 5 5 7 _ 0 1 _ c h 0 1 _ p 0 0 1 - 0 1 4 . i n d d 1 85557_01_ch01_p001-014.indd 1 4 / 4 / 0 7 5 : 3 7 : 4 1 P M 4/4/07 5:37:41 PM 하고 싶은 말 좀 더 업그레이드하여 자료를 보완하여, 과제물을 꼼꼼하게 정성을 들어 작성했습니다. 위 자료 요약정리 잘되어 있으니 잘 참고하시어 학업에 나날이 발전이 있기를 기원합니다 ^^ 구입자 분의 앞날에 항상 무궁한 발전과 행복과 행운이 깃들기를 홧팅 키워드 대학물리학, 북스힐, 솔루션, 물리학