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آموزش فیزیک در فیزیک یار(گروه آموزشی کیان دانش) - ظرف پر از آبی که دهها سکه در خود جا می دهد
 
آموزش فیزیک در فیزیک یار(گروه آموزشی کیان دانش)
آموزش رایگان برای همه
درباره وبلاگ


در این سایت ، فیلم ، انیمیشن، نمونه سئوال امتحانی به منظور کمک به یادگیری مفهومی این درس قرار داده خواهد شد.امید است این سایت زمینه علاقمندی دانش آموزان به این علم را فراهم سازد.
مدرس حسن حبیبی مدرس ریاضی و فیزیک شهر زنجان
09125423467
تلگرام fizikyar2@
کیان دانشkiyandanesh@
habibieducation@gmail.com

مدیر وبلاگ : حسن حبیبی
نویسندگان
در یک ظرف انقدر آب بریزید تا کاملاً پر شود. بعد یک مشت سکه کنار جام  بگذارید. شاید در این ظرف پر از آب برای یکی دو سکه هم جا مانده است؟ آزمایش کنید

[http://www.aparat.com/v/qCWBO]


سکه ها را یکی یکی در ظرف بیاندازید و بشمارید. البته باید خیلی با احتیاط بیاندازنید: نوک تیز سکه را آهسته توی آب فرو ببریید و بدون تکان خوردن و فشار سکه را رها کنید؛ بطوری که آب بر اثر لرزش بیرون نریزد. یک، دو، سه  سکه به ته ظرف می افتد، اما سطح آب بالا نمی آید.باز هم در ظرف سکه می اندازیم . ده ، بیست ، سی ، چهل ، پنجاه .... ولی بازهم آبی بیرون نمی ریزد.تا اینکه حالا دیگردیده می شود که چطور سطح اب بالا آمده و کمی از لبه ظرف بالاتر است. کلید حل این پدیده غیر قابل فهم در همین بالا آمدن آب است.آبی که در نتیجه انداختن سکه ها بالا آمده است، برجستگی غیر قابل توجهی تشکیل می دهد که به چشم نمی خورد، اما اگر به خودمان زحمت بدهیم و حجم یک سکه را حساب کنیم و با حجم برجستگی بالا آمده مقایسه کنیم، یقین خواهیم کرد که حجم یک سکه دهها بار از حجم آب بالا آمده کمتر است. به همین دلیل دریک ظرف پر ممکن است برای دهها سکه هم جا پیدا شود. هر چه ظرف گشادتر باشد به همان اندازه بیشتر سکه در آن جا می گیرد، زیرا حجم آب بالا آمده به همان اندازه بیشتر است.




نوع مطلب : فیلم آزمایش، 
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