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  • Question about Newton's Law

    A pendulum bob hangs in a steady state from the roof of a car as it accelerates horizontally. The angle between the string and the vertical is 10 degrees.

    Find the resultant force acting on the bob and the accelreation of the car.

    1 個解答其他 - 科學1 十年前
  • HK$同US$ 利率問題

    HK$一路係link住US$

    所以US一有d咩野利率ge變動HK$都要跟住做

    但點解唔係次次跟足而係有時會跟少d le?

    係咪因為HK ge 利率已經差唔多到zero le?

    1 個解答其他 - 商業及金融1 十年前
  • mini SD card was locked

    my miniSD was mistakenly locked...

    wt can i do to due wif it?

    1 個解答手提電話1 十年前
  • mini SD card locked

    i hv locked the mini SD card by my mobile....

    but i hv forgetten the password....

    wt can i do for it...?

    is there any ways can save the memories inside but unlock it??

    or....how to format it...?

    plz help..

    1 個解答手提電話1 十年前
  • "會考"個名點黎架???

    as the topic mentioned~~

    1 個解答語言1 十年前
  • Physics

    Masses of 6 kg and 2 kg are tied to the ends of a light string which passes over a light smooth pulley. The mass of 6 kg is held 1 m above the floor while the mass of 2 kg is resting on the floor. Find the upward displacement of the 2 kg mass when the system is released.

    1 個解答其他 - 科學1 十年前
  • Physics

    A balloon of total mass 1000 kg floats motionless in the air. If 100 kg of sand ballast are thrown overboard the baloon, with what acceleration does the balloon start to rise and what will be its velocity after 9 seconds?

    Two objects of masses 2 kg and 3 kg are suspended by taut string passing over a frictionless pulley. Determine the acceleration of the two objects and the tension in the string when the system is released.

    1 個解答其他 - 科學1 十年前
  • Physics

    A man, using a 70 kg garden roller on a level surface, exerts a force on 200N at 30 degrees to the ground. Find the vertical force of the roller on the ground if he pulls; and if he pushes the roller.

    A man tries to push a cargo along horizontal ground, but he finds that he cannot move it. If the force he exerted on the cargo is 800N, show the direction of the frictional force on the cargo and give its value.

    1 個解答其他 - 科學1 十年前
  • Math & Stat

    我想知點解有d graph會係有尖角架呢??

    such as:f(x) = 3/4(x^2 - 1)^2/3

    2 個解答數學1 十年前
  • 左手guitar

    邊到會有左手guitar賣呀???

    會唔會俾右手ge貴le??

    1 個解答其他 - 電視1 十年前
  • logarithm

    o係maths到,log其實有乜野作用???

    log黎做咩野???

    log10之後會係1

    咁log25之後既1.39794到底係d乜??

    plx help help me...~

    2 個解答數學1 十年前
  • 挪亞方舟~

    挪亞方舟既事件係點樣架??

    i want the detail one~thxx

    5 個解答宗教及靈性1 十年前
  • 好煩呀......./︿\....

    阿媽同女朋友極度不和.......

    點算....??

    3 個解答其他 - 家庭及人際關係1 十年前
  • 犯罪的定義

    對於一個基督教,犯罪係世人既價值觀所定還是聖經所指??

    2 個解答宗教及靈性1 十年前
  • 浸禮既問題

    我想知一個人可唔可以浸兩次禮??

    可能係因為佢浸左一次之後又犯左好多好大既罪,佢想再潔淨多次~

    8 個解答宗教及靈性1 十年前
  • May u help me???

    what is the difference between atom bomb and nuclear bomb??

    1 個解答化學1 十年前
  • Infra red

    俾intra red射到隻眼會點???

    好痛???

    足唔足以盲架??

    1 個解答其他 - 健康1 十年前
  • HKIAAT FA

    有冇人知道HKIAAT FA 係咩野試黎???

    邊到有哩個試既paper and answer???

    1 個解答其他 - 商業及金融1 十年前
  • What is [ e ]???

    點解會有哩個野???

    由d咩野變出黎架???

    1 個解答數學1 十年前