[公告] 普物功課題目

看板b98902HW作者barry800414 (小銘)時間14年前 (2009/09/26 20:28)推噓19(19推 0噓 6→)

留言25則, 15人參與討論串1/1

應該是chapter 1吧? 38. The SI unit of force ,the kilogram-meter per second squared(kg‧m/s^2)is called the newton(N) Find the dimensions and the SI units if constant G in Newton's law of gravitation F= G‧m1‧m2/r^2 50. A circular hole of radius 8.470 X 10^-1 cm must be cut into the front panel of a display unit The tolerance is 1.0 X 10^-3 cm, which means the actual hole cannot differ by more than this quantity from the desired radius ,If the actual hole is larger than the desired radius by the allowed tolerance ,what is the difference between the actual area and the desired area of the hole? 72.A particular company's stock prices vary with the market and with the company's type of business,and can be very unpredictable ,but people ofen try to look for mathmatical patterns where they may not belong. Corning is a material-engineering company located in upstate New York. Below is a table of price Cornig stock on August 3,for every 5 years from 1981 to 2001 Assume that the price follows a power law : price (in $)= B t^c where t is expressed in years . (a)Evaluate the constants B and C (see methods suggested for the previous problem ) (b) According to the power law ,what should the price of Corning stock have been on August 3,2000? (It was actually $ 82.83!) (a)price (dollars) 2.10 4.19 9.14 10.82 16.85 (b)Years since 1980 1 6 11 16 21 74.You and a friend are out hiking across a large flat plain and decide to determine the height of a distant mountain peak,and also the horizontal distance from you to the peak (Figure 1-19). In order to do this,you stand int spot and determine that the sightline to the top of peak is inclined at 7.5度(我不會打度= =)above the horizontal You also make note of the heading to the peak at that 13度 east of north. You stand at the original position, and your friend hikes due west for 1.5km . He then sights the peak and determines that its sightline has a heading of 15 度 east of north. How far is the mountain from your position ,and how high is its summit above your position? 圖我沒辦法了話說我推薦在系館放一本給沒買的人抄題目每次打不是辦法@@(雖然好像可練英打= =) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.241.197

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sunjw

09/26 20:32, , 1^F

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s864372002

09/26 20:33, , 2^F

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rod13824

09/26 20:33, , 3^F

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