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Physics exercises_solution: Chapter 17

Bộ tài liệu bài tập tham khảo môn vật lý bậc đại học bằng tiếng anh Chapter 17 | 17.1 From Eq. 17.1 a 9 5 - 62.8 32 -81.0oF. b 9 5 56.7 32 134.1OF. c 9 5 31.1 32 88.0OF. 17.2 From Eq. 17.2 a 5 9X41.0 - 32 5.0OC. b 5 9 107 - 32 41.7OC. c 5 9 -18 - 32 -27.8oC. 17.3 1Co fFo so 40.0 72.0 Fo T2 T1 70.0 Fo 140.2oF 17.4 a 5 9 45.0 - -4.0 27.2o C. b 5 9 -56.0 - 44 -55.6o C. 17.5 a FromEq. 17.1 9 5 40.2 32 104.4oF which is cause for worry. b 9 5X12 32 53.6oF or 54oF to two figures. 17.6 9 5 11.8 21.2 Fo 17.7 1K 1Co po so a temperature increase of 10 K corresponds to an increase of 18 Fo . Beaker B has the higher temperature. 17.8 For b ATC ATK -10.0 Co. Then for a ATF ATC -10.0 Co -18.0Fo. 17.9 Combining Eq. 17.2 and Eq. 17.3 Tk 5 Tf -32o 273.15 and substitution of the given Fahrenheit temperatures gives a 216.5 K b 325.9 K c 205.4 K. 17.10 In these calculations extra figures were kept in the intermediate calculations to arrive at the numerical results. a TC 400 - 273.15 127oC TF 9 5 126.85 32 260oF. b TC 95 - 273.15 -178oC TF 9 5 -178.15 32 -289oF. c TC 1.55 x 107 - 273.15 1.55 x 107oC TF 9 5 1.55 x 107 32 2.79 x 107oF. 17.11 From Eq. 17.3 TK -245.92OC 273.15 27.23K. 17.12 From Eq. 17.4 7.476 273.16K 2042.14K-273.15 1769OC. 17.13 From Eq. 17.4 325.0mm 373 15K 444 mm. 1 x x X273.16K 17.14 On the Kelvin scale the triple point is 273.16 K so OR 9 5 273.15 K 491.69OR. One could also look at Figure 17.7 and note that the Fahrenheit scale extends from - 460OF to 32OF and conclude that the triple point is about 492or. 17.15 From the point-slope formula for a straight line or linear regression which while perhaps not appropriate may be convenient for some calculators 0.01OC - 100.0OC -----4.80 x 10 Pa-------- -282.33OC 6.50x 104 Pa-4.80x104 Pa which is 282OC to three figures. b Equation 17.4 was not obeyed precisely. If it were the pressure at the triple nnint u Aiilrl P-iTP 1 AM 6.50x104 Pa _ A nt. v 1 A4 p point would be p 2 3.16n 37375 j 4.76x 10 Pa. 17.16 AT AL aL0 25 x 10-2 m 2.4x 10-5 co - 1 62.1 m 168O C so the temperature is 183 o C. 17.17 aL0AT 1.2 x