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  • Our solenoid only attracts the magnet?!?

    My friends and I were building a physics project--making a galvanometer which can be used to measure current. We wrapped a nail with copper wire and then connected the two ends of copper wire to a 1.5v battery. But something weird happened: the solenoid we made could only attract to permanent magnets. It couldn't repel the magnets at either ends. Can somebody help us out ? We desperately need some advice :D

    3 個解答Physics1 0 年前
  • 東方神起抽氣球

    東方神起的團員抽氣球後可以發出怪怪的聲音 是怎麼弄的阿?

    東方神起的團員抽氣球後可以發出怪怪的聲音 是怎麼弄的阿?

    2 個解答明星與名人1 0 年前
  • 有關電影V怪客的問題


    2.在女主角被關期間 不是有一張紙條在老鼠洞裡? 裡面的內容跟電影有啥關係阿?= =


    4.女主角一開始要出去做什麼 被秘密警察抓到?

    5.為什麼女主角一拉在列車上的桿子 列車就會啟動?那不是廢棄的媽?

    6.那兩個警察不是有跟一個老頭會面? 那老頭是誰(是V媽)? 跟他們說了什麼?


    8.為什麼女主角的朋友(女主角躲在他家)會做和V一樣的吐司加蛋= =




    2 個解答電影1 0 年前
  • 世界大戰片頭片尾語錄是誰說的?

    片頭語錄:No one would have believed in the early years

    of the twenty-first century that our world was being watched

    by intelligences greater than our own. That as men busied

    themselves about their various concerns, they observed - and

    studied. With infinite complacency, men went to and fro about

    the globe, confident of their empire over this world. Yet, across

    the gulf of space, intellects vast, and cool, and unsympathetic

    regarded our planet with envious eyes... and slowly, and surely,

    drew their plans against us.

    片尾: From the moment the invaders arrived, breathed our air, ate, and drank, they were doomed. They were undone, destroyed, after all of man\'s weapons and devices had failed, by the tiniest creatures that God and his wisdom put upon this earth. By the toll of a billion deaths, man had earned his immunity, his right to survive among this planet\'s infinite organisms. And that right is ours against all challenges. For neither do men live nor die in vain.



    2 個解答電影1 0 年前