# Yahoo奇摩 網頁搜尋

1. ### 點解直昇機可以在天空上飛？點解要有一個垂直的尾翼？

...使大雄穩定地飛行的，大雄只會不停地打轉！ 原文網址: http://www.hk-phy.org/iq/ helicopter / helicopter .html

分類：科學及數學 > 物理學 2017年07月13日

2. ### 飛行恐懼症英文是甚麼？

...fear of being on an airplane (aeroplane), or other flying vehicle, such as a helicopter , while in flight." 2014-12-29 19:50:59 補充： 附：各類恐懼症-List...

3. ### cartoon war

now,upgrade your castle hp and buy the golem and upgrade the apache to a helicopter then your manna upgrade ,faster to kill the dragon and use cool time to attack them,your robin hood and motor can kill the skeleton dragon (blue toxic monster)

4. ### 有咩交通公具英文名稱(全世界)

... are: Aviation-aircrafts, aeroplanes, helicopters Land transport-bicycles, cars, trucks, buses...

5. ### a helicopter rotor

(a) 550 rev/min = 550 x 2.pi/60 rad/s = 57.6 rad/s Linear speed of blade tip = 57.6 x 3.4 m/s = 196 m/s (b) Radial acceleration = 3.4 x 57.6^2 m/s^2 = 11280 m/s^2 2013-05-28 18:27:13 補充： (b) when expressed in terms of g, 11280 m/s^2 = 1128g take g = 10 m/s^2

6. ### force Q2

1.(a) Since the bucket of water is moving horizontally at constant speed, the resultant force acting on it is zero. (b) Resolve the tension T vertically, we have T.cos(40) = 2000 T = 2611 N The air resistance force is balanced...

... airports on both sides. It might be possible to take helicopter from Taipo to Kowloon Tong if there were helicopter ...

分類：社會及文化 > 語言 2012年07月16日

8. ### 請幫我修改些作文!!thx ~~~10點

...的兩件事，如果你講As we rolled down the steam, in the mean time, a helicopter was flying downstream to get ready to transport us back home.咁就...

分類：社會及文化 > 語言 2012年05月28日

9. ### Tenses 急快 plz

... services were (11)alerted (alert) and a helicopter (12) airlifted (airlift) the woman to Eastern Hospital. ...

分類：社會及文化 > 語言 2012年03月03日

10. ### newton second law

1) Let F be the force the cable is applying on the man, then: Mass of man = 88.2/9.8 = 90 kg 882 - F = 90 x 1.1 F = 783 N 2) Let n be the max. no. of person that the elevator can carry, then the mass of elevator + persons = 300 + 80n Hence we have...